CN105071539B - Monitoring method and device for power distribution network - Google Patents

Abstract

The invention discloses a monitoring method and device for distribution network. Among them, the method includes: establishing a multi-layer topology model of the distribution network, wherein the multi-layer topology model is used to characterize the topology structure between various devices in the distribution network; collecting state information of the distribution network from a data source; according to The multi-layer topology model and state information analyze the equipment to determine whether there is a faulty device in the distribution network; if it is judged that there is a faulty device in the distribution network, then output the fault result, where the fault result includes the power grid fault and/or communication Fault. The invention solves the technical problem that the faults in the distribution network cannot be found in time in the prior art.

Description

Monitoring method and device for distribution network

technical field

The invention relates to the field of power grids, in particular to a monitoring method and device for distribution networks.

Background technique

In the power system, with the construction of the distribution automation system, the operating range of the distribution network is gradually expanding, and the failure of the distribution network will directly lead to a serious impact on the user's electricity consumption. Therefore, discovering and handling the faults of the distribution network in time can shorten the time when the user's electricity consumption is affected due to the above faults, and improve the fault maintenance efficiency of the distribution network. However, at present, there is no solution for fault monitoring of the distribution network. We can only rely on the "passive" way of user repairs to obtain fault information, and then start the fault processing process to solve the problem.

In addition, in the related art, it is also impossible to distinguish the failure of the power grid from the failure of the communication equipment transmitting the grid signal.

For the above problems, no effective solution has been proposed yet.

Contents of the invention

Embodiments of the present invention provide a monitoring method and device for a distribution network, so as to at least solve the technical problem in the prior art that faults in the distribution network cannot be found in time.

According to an aspect of an embodiment of the present invention, a method for monitoring a distribution network is provided, including: establishing a multi-layer topology model of the distribution network, wherein the multi-layer topology model is used to characterize the distribution network The topological structure between each device in the distribution network; collect the status information of the distribution network from the data source; analyze the device according to the multi-layer topology model and the status information to judge the status information of the distribution network Whether there is a faulty device; if it is judged that the faulty device exists in the distribution network, output a fault result, wherein the fault result includes a grid fault and/or a communication fault.

Further, the device includes a power distribution device and a communication device for transmitting status information of the distribution network.

Further, the power grid failure includes any of the following: tripping of the low-voltage outlet switch, tripping of the low-voltage main switch of the distribution transformer, distribution transformer failure, and tripping of the outlet switch of the switch station; the communication failure includes any of the following: optical network unit failure, fiber failure, concentrator failure, and downlink port failure of the concentrator.

Further, the data source includes at least one of the following: user electricity collection system, dispatch EMS system, distribution automation system, OMS system and distribution network communication system.

Further, analyzing the device according to the multi-layer topology model and the state information to determine whether there is a faulty device in the power distribution network includes: in the case of receiving an abnormal signal from the first device, obtaining The working status of at least one second device that has the same parent node as the first device in the topology; judging whether the working status of the second device is normal; after judging that the working status of the second device is abnormal In the case of , determine that the faulty device is the device corresponding to the parent node; in the case of judging that the working state of the second device is normal, determine that the faulty device is the first device.

Further, the device includes a concentrator, and analyzing the device according to the multi-layer topology model and the status information to determine whether there is a faulty device in the distribution network includes: according to the multi-layer topology model and analyzing the concentrator with the status information to determine whether the concentrator in the distribution network is the faulty device or whether a device other than the concentrator is the faulty device.

Further, the concentrator is analyzed according to the multi-layer topology model and the status information to determine whether the concentrator in the distribution network is the faulty device or whether the device other than the concentrator is The faulty device includes: when the offline signal of the first concentrator is received and the offline signal of the first optical network unit corresponding to the first concentrator is not received, obtaining the second concentrator’s Working state, wherein both the second concentrator and the first concentrator are powered by the first low-voltage outlet switch; judge whether the working state of the second concentrator is normal; When the working state is normal, determine that the faulty device is the first concentrator; when it is judged that the working state of the second concentrator is abnormal, determine that the faulty device is the first low-voltage outlet switch .

Further, the concentrator is analyzed according to the multi-layer topology model and the status information to determine whether the concentrator in the distribution network is the faulty device or whether the device other than the concentrator is The faulty device includes: in the case of receiving the disconnection signal of the third concentrator and not receiving the disconnection signal of the second optical network unit corresponding to the third concentrator, obtaining the first target user’s Meter voltage, wherein the meter voltage of the first target user is collected by the fourth concentrator, the meter voltage of the second target user is collected by the third concentrator, the third concentrator, the second concentrator Both the first target user and the second target user are powered by the second low-voltage outlet switch; judging whether the meter voltage of the first target user is normal; if it is judged that the meter voltage of the first target user is normal , determining that the faulty device is the third concentrator.

Further, after judging whether the meter voltage of the first target user is normal, the concentrator is analyzed according to the multi-layer topology model and the state information, so as to judge the Whether the concentrator is the faulty device or whether the device other than the concentrator is the faulty device also includes: if it is judged that the meter voltage of the first target user is abnormal, obtaining a preset number of second The meter voltage of three target users, wherein, the meter voltage of the third target user is collected through the fourth concentrator, the third target user is powered by the second low-voltage outlet switch, and the preset number greater than or equal to one; judging whether the meter voltage of the third target user is normal; in the case of judging that the meter voltage of the third target user is normal, determining that the faulty device is the third concentrator; If it is determined that the meter voltage of the third target user is abnormal, it is determined that the faulty device is the second low-voltage outlet switch.

Further, the concentrator is analyzed according to the multi-layer topology model and the status information to determine whether the concentrator in the distribution network is the faulty device or whether the device other than the concentrator is The faulty device includes: judging the first preset time when receiving the offline signal of the fifth concentrator and not receiving the offline signal of the third optical network unit corresponding to the fifth concentrator whether to receive a power outage report message from the fourth target user, wherein both the fourth target user and the fifth concentrator are powered by the third low-voltage outlet switch; In the case of the power failure report message of the fourth target user, it is determined that the faulty device is the third low-voltage outlet switch; the fourth target user is not received within the first preset time after judging In the case of the power outage repair report message, it is determined that the faulty device is the third low-voltage outlet switch or the fifth concentrator.

Further, after determining that the faulty device is the third low-voltage outgoing line switch or the fifth concentrator, analyze the concentrator according to the multi-layer topology model and the state information to determine whether the Whether the concentrator in the power distribution network is the faulty device or whether the device other than the concentrator is the faulty device also includes: judging whether the fourth target user’s information is received within a second preset time. A power outage report message, wherein, the start time of the second preset time is the end time of the first preset time; the message of the fourth target user is received within the second preset time In the case of the power outage report message, it is determined that the faulty device is the third low-voltage outlet switch.

Further, the device includes an optical network unit, and analyzing the device according to the multi-layer topology model and the state information to determine whether there is a faulty device in the distribution network includes: according to the multi-layer topology The model and the status information analyze the optical network unit to determine whether the optical network unit in the distribution network is the faulty device or whether a device other than the optical network unit is the faulty device.

Further, analyzing the optical network unit according to the multi-layer topology model and the state information to determine whether the optical network unit in the distribution network is the faulty device or not the optical network unit Whether the device is the faulty device includes: receiving the offline signal of the fourth optical network unit; obtaining the state of the 10KV incoming line switch corresponding to the target distribution transformer, wherein the target distribution transformer is the same as the first The distribution transformer corresponding to the four optical network units; according to the state of the 10KV incoming line switch, it is judged whether the faulty device is the fourth optical network unit.

Further, according to the state of the 10KV incoming line switch, judging whether the faulty device is the fourth optical network unit includes: if the 10KV incoming line switch satisfies a preset condition, determining that the faulty device is the The fourth optical network unit, wherein the preset condition is closed, current exists, and active power value.

Further, analyzing the optical network unit according to the multi-layer topology model and the state information to determine whether the optical network unit in the distribution network is the faulty device or not the optical network unit Whether the device is the faulty device includes: obtaining the communication maintenance plan and the fault information of the communication optical cable in the case of receiving the disconnection signal of the fifth optical network unit, wherein the fifth optical network unit is the same as the sixth set optical network unit with an associated relationship; judge whether the fifth optical network unit has a communication fault according to the communication maintenance plan and communication optical cable fault information; When the fifth optical network unit does not have the communication failure, acquire the meter voltage of the fifth target user, wherein the meter voltage of the fifth target user is collected by the seventh concentrator, and the sixth concentrator The meter user collects the meter voltage of the sixth target user, and both the fifth target user and the sixth target user are powered by the first low-voltage main switch of the distribution transformer; it is judged whether the meter voltage of the fifth target user is normal; When it is judged that the meter voltage of the fifth target user is normal, determining that the faulty device is the fifth optical network unit; when it is judged that the meter voltage of the fifth target user is abnormal, It is determined that the faulty device is the low-voltage main switch of the first distribution transformer.

Further, analyzing the optical network unit according to the multi-layer topology model and the state information to determine whether the optical network unit in the distribution network is the faulty device or not the optical network unit Whether the device is the faulty device includes: in the case of receiving the disconnection signal of the sixth optical network unit, obtaining the communication maintenance plan and communication optical cable fault information; judging the communication maintenance plan and communication optical cable fault information according to the Whether the sixth optical network unit has a communication fault; if it is determined that the sixth optical network unit does not have the communication fault according to the communication maintenance plan and the communication cable fault information, determine whether the sixth optical network unit has a communication fault within the third preset time Receive a power outage report message from the seventh target user, wherein both the seventh target user and the sixth optical network unit are powered by the second low-voltage main switch of the distribution transformer; receive within the third preset time In the case of receiving the power outage report message from the seventh target user, it is determined that the faulty device is the low-voltage main switch of the second distribution transformer; In the case of the power outage report message of the target user, it is determined that the faulty device is the second distribution transformer low-voltage main switch or the sixth optical network unit.

Further, after determining that the faulty device is the second distribution transformer low-voltage main switch or the sixth optical network unit, wherein the optical network unit is performed according to the multi-layer topology model and the state information Analyzing to determine whether the optical network unit in the distribution network is the faulty device or whether the device other than the optical network unit is the faulty device also includes: judging whether the The power outage report message of the seventh target user, wherein the start time of the fourth preset time is the end time of the third preset time; In the case of the power outage report message, it is determined that the faulty device is the low-voltage main switch of the second distribution transformer.

Further, the device further includes an auxiliary power supply, the auxiliary power supply is used to supply power to the seventh optical network unit within a first preset time period when the main power supply of the seventh optical network unit is powered off, wherein, according to The multi-layer topology model and the state information analyze the optical network unit to determine whether the optical network unit in the distribution network is the faulty device or whether a device other than the optical network unit is The faulty device includes: in the case of receiving the offline signal of the seventh optical network unit, judging whether the seventh optical network unit has received the seventh ONU within the first preset time period before receiving the offline signal. The network port loss signal of the optical network unit, wherein the network port loss signal corresponds to the distribution transformer that supplies power to the seventh optical network unit; when it is judged that the network port loss signal is received, determine the The faulty device is a distribution transformer that supplies power to the seventh optical network unit; if it is determined that the network port loss signal is not received, determine that the faulty device is the seventh optical network unit.

Further, the device further includes an auxiliary power supply, the auxiliary power supply is used to supply power to the eighth optical network unit within a second preset time period when the main power supply of the eighth optical network unit is powered off, wherein, according to The multi-layer topology model and the state information analyze the optical network unit to determine whether the optical network unit in the distribution network is the faulty device or whether a device other than the optical network unit is The faulty device includes: in the case of receiving the network port loss signal of the eighth optical network unit, judging whether to receive the network port loss signal within the second preset time period after receiving the network port loss signal The offline signal of the eighth optical network unit; when it is determined that the offline signal is received, determine that the faulty device is a distribution transformer that supplies power to the eighth optical network unit; When the disconnection signal is received, it is determined that the faulty device is a distribution transformer corresponding to the network port loss signal.

According to another aspect of the embodiments of the present invention, there is also provided a monitoring device for a distribution network, including: an establishment unit for establishing a multi-layer topology model of the distribution network, wherein the multi-layer topology model uses To characterize the topology structure among the various devices in the distribution network; the acquisition unit is used to collect the state information of the distribution network from the data source; the judgment unit is used to collect the state information according to the multi-layer topology model and the state Analyzing the device to determine whether there is a faulty device in the distribution network; an output unit configured to output a fault result when it is determined that the faulty device exists in the distribution network, wherein the The above failure results include grid failure and/or communication failure.

Further, the device includes a power distribution device and a communication device for transmitting status information of the distribution network.

Further, the power grid failure includes any of the following: tripping of the low-voltage outlet switch, tripping of the low-voltage main switch of the distribution transformer, distribution transformer failure, and tripping of the outlet switch of the switch station; the communication failure includes any of the following: optical network unit failure, fiber failure, concentrator failure, and downlink port failure of the concentrator.

Further, the data source includes at least one of the following: user electricity collection system, dispatch EMS system, distribution automation system, OMS system and distribution network communication system.

Further, the judging unit includes: an obtaining module, configured to obtain, in the case of receiving an abnormal signal from the first device, the information of at least one second device having the same parent node as the first device in the topology Working state; a first judging module, used to judge whether the working state of the second device is normal; a first determining module, used to determine the fault when it is judged that the working state of the second device is abnormal The device is the device corresponding to the parent node; the second determination module is configured to determine that the faulty device is the first device when it is determined that the working state of the second device is normal.

Further, the device includes a concentrator, wherein the judging unit includes: a second judging module, configured to analyze the concentrator according to the multi-layer topology model and the state information, to judge whether the configuration Whether the concentrator in the power grid is the faulty device or whether a device other than the concentrator is the faulty device.

Further, the device includes an optical network unit, wherein the judging unit includes: a third judging module, configured to analyze the optical network unit according to the multi-layer topology model and state information, so as to judge whether the configuration Whether the optical network unit in the power grid is the faulty device or whether a device other than the optical network unit is the faulty device.

In the embodiment of the present invention, a multi-layer topology model of the distribution network is established, wherein the multi-layer topology model is used to characterize the topology structure among the various devices in the distribution network; State information of the distribution network; analyze the device according to the multi-layer topology model and state information to determine whether there is a faulty device in the distribution network; if it is determined that the fault exists in the distribution network The device outputs a fault result, where the fault result includes a power grid fault and/or a communication fault. By establishing the topology model of the distribution network, collecting the status information of the distribution network, and then analyzing the equipment in the distribution network according to the above topology model and status information, it is possible to monitor the operation of the equipment in the distribution network, so as to be able to Timely and active detection of faulty equipment in the distribution network (that is, faulty equipment), and can further determine the type of fault to which the above-mentioned faulty equipment belongs. In related technologies, only relying on the passive way of user repair Compared with faults, it achieves the purpose of timely and proactively discovering the faults in the distribution network without relying on the user's repair report, thereby achieving the technical effect of improving the timeliness of the staff to solve the faults, and further solving the problem that the existing technology cannot The technical problem of discovering the faults existing in the distribution network.

Description of drawings

The accompanying drawings described here are used to provide a further understanding of the present invention and constitute a part of the application. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations to the present invention. In the attached picture:

Fig. 1 is a flow chart of an optional monitoring method for a distribution network according to an embodiment of the present invention;

2 is a schematic diagram of a low-voltage outlet switch supplying power to multiple concentrators in another optional monitoring method for a distribution network according to an embodiment of the present invention;

Fig. 3 is a schematic diagram of another optional method for monitoring a distribution network according to an embodiment of the present invention, where there is a crossover between the primary power grid and the communication network;

Fig. 4 is a schematic diagram showing that there is no intersection between the primary power grid and the communication network in another optional monitoring method for distribution network according to an embodiment of the present invention;

Fig. 5 is a schematic diagram showing that there is no intersection between the primary power grid and the communication network in another optional monitoring method for distribution network according to an embodiment of the present invention;

6 is a schematic diagram of tripping of a low-voltage outlet switch in another optional monitoring method for a distribution network according to an embodiment of the present invention;

Fig. 7 is a schematic diagram of a low-voltage main switch of a distribution transformer tripping in another optional monitoring method for a distribution network according to an embodiment of the present invention;

Fig. 8 is a schematic diagram of another optional monitoring method for a distribution network according to an embodiment of the present invention;

Fig. 9 is a schematic diagram of a monitoring device for a power distribution network according to an embodiment of the present invention.

detailed description

In order to enable those skilled in the art to better understand the solutions of the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only It is an embodiment of a part of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

It should be noted that the terms "first" and "second" in the description and claims of the present invention and the above drawings are used to distinguish similar objects, but not necessarily used to describe a specific sequence or sequence. It is to be understood that the data so used are interchangeable under appropriate circumstances such that the embodiments of the invention described herein can be practiced in sequences other than those illustrated or described herein. Furthermore, the terms "comprising" and "having", as well as any variations thereof, are intended to cover a non-exclusive inclusion, for example, a process, method, system, product or device comprising a sequence of steps or elements is not necessarily limited to the expressly listed instead, may include other steps or elements not explicitly listed or inherent to the process, method, product or apparatus.

According to an embodiment of the present invention, a method embodiment of a method for monitoring a power distribution network is provided. It should be noted that the steps shown in the flow chart of the accompanying drawings can be implemented in a computer system such as a set of computer-executable instructions and, although a logical order is shown in the flowcharts, in some cases the steps shown or described may be performed in an order different from that shown or described herein.

Fig. 1 is a flow chart of an optional monitoring method for a distribution network according to an embodiment of the present invention. As shown in Fig. 1, the method includes the following steps:

Step S102, establishing a multi-layer topology model of the distribution network, wherein the multi-layer topology model is used to characterize the topology structure among various devices in the distribution network.

Specifically, the multi-layer topology model can be three layers, and each layer is a 10KV distribution network, a 10KV transformer station area, low-voltage equipment, and user smart meters.

Step S104, collecting state information of the distribution network from a data source.

Specifically, the status information of the distribution network includes concentrator power information, concentrator heartbeat data, optical network unit (Optical Network Unit, ONU for short) data, maintenance plan data, grid topology data, EMS real-time data, etc.

Specifically, the status information of the distribution network mainly includes information from the electricity collection system, marketing system, dispatch EMS (energy management) system, distribution automation system, distribution network communication system, OMS (dispatch operation management) system, PMS2.0 data obtained from the system. Among them, the power collection system includes distribution transformer and low-voltage user meter data, the marketing system includes 95598 work order data, customer ledger data, and meter relationship data, and the dispatching EMS system includes substation 10KV switch remote signaling and telemetry data. The electrical automation system includes distribution line data and station telemetry data, the distribution communication system includes ONU offline data, the OMS system includes planned power outage data, and the PMS2.0 system includes GIS equipment account and grid topology data .

Step S106, analyzing the equipment according to the multi-layer topology model and status information to determine whether there is a faulty equipment in the distribution network.

In step S108, if it is determined that there is a faulty device in the power distribution network, a fault result is output, wherein the fault result includes a grid fault and/or a communication fault.

In the embodiment of the present invention, by establishing the topology model of the distribution network, collecting the state information of the distribution network, and then analyzing the equipment in the distribution network according to the above topology model and state information, the equipment in the distribution network is realized. The operating conditions are monitored, so that it is possible to promptly and proactively discover the faulty equipment (that is, the faulty equipment) in the distribution network, and to further determine the type of fault to which the above-mentioned faulty equipment belongs. In related technologies, only the user can rely on Compared with the passive method of reporting for repairs to determine the occurrence of faults, it achieves the purpose of actively discovering the faults in the distribution network in a timely manner without relying on the user's repairs, thereby achieving the technical effect of improving the timeliness of the staff to solve the faults, and then solving the problem. It solves the technical problem that the faults in the distribution network cannot be found in time in the prior art.

In addition, the embodiment of the present invention also achieves the effect of distinguishing the failure of the grid equipment and the failure of the communication equipment.

Optionally, the device in the foregoing embodiment includes a power distribution device and a communication device for transmitting status information of the power distribution network.

Optionally, the power grid failure includes any of the following: tripping of the low-voltage outlet switch, tripping of the low-voltage main switch of the distribution transformer, distribution transformer failure, and tripping of the outlet switch of the switching station; communication failure includes any of the following: failure of the optical network unit, optical fiber failure, concentrator failure, and concentrator downlink port failure.

Optionally, the data source includes at least one of the following: user electricity collection system, dispatch EMS system, distribution automation system, OMS system and distribution network communication system.

Optionally, in the embodiment of the present invention, analyzing the equipment according to the multi-layer topology model and state information to determine whether there is a faulty equipment in the distribution network includes steps S1061 to S1067:

Step S1061, in the case of receiving the abnormal signal of the first device, acquire the working status of at least one second device having the same parent node as the first device in the topology structure. Specifically, the abnormal signal may be a disconnection signal, and the first device may be a communication device or a power distribution device.

In the topology structure, there may be one or more second devices belonging to the same parent node as the first device. For the case of multiple second devices, the working status of only one second device can be obtained, or the working status of n second devices can be obtained, where n is greater than 1 and less than or equal to the number of multiple second devices .

Step S1063, judging whether the working state of the second device is normal.

Specifically, if the working status of one second device is obtained in the above step S1061, it is only necessary to judge whether the working status of the one second device is normal; if the working status of n second devices is obtained in the above step S1061, then It is necessary to determine whether the working state of each second device among the n second devices is normal.

Step S1065, if it is determined that the working state of the second device is abnormal, determine that the faulty device is the device corresponding to the parent node.

If only the working state of one second device is acquired in the above step S1061, then, if it is judged that the working state of the above-mentioned one second device is abnormal, then determine the parent node corresponding to the first device and the second device in the topology structure The device is a faulty device. If the working states of n second devices are acquired in the above step S1061, then, if it is judged that the working states of the above n second devices are all abnormal, then determine the parent node of the first device and the second device in the topology The corresponding device is a faulty device.

Step S1067, if it is determined that the working state of the second device is normal, determine that the faulty device is the first device.

Similarly, if only the working state of one second device is acquired in the above step S1061, then if it is judged that the working state of the one second device is normal, then it is determined that the first device is a faulty device. If the working states of the n second devices are obtained in the above step S1061, then if it is determined that the working states of the n second devices are all normal, then it is determined that the first device is a faulty device.

In the embodiment of the present invention, according to the structural relationship of each device in the topology, when any device generates an abnormal signal, the device in the topology is analyzed by means of vertical tracing, horizontal verification, and layer-by-layer upward derivation. Analyzing other associated devices can accurately determine the faulty device, achieving the effect of improving the accuracy of determining the faulty device.

Optionally, in this embodiment of the present invention, the device includes a concentrator, and analyzing the device according to the multi-layer topology model and status information to determine whether there is a faulty device in the distribution network includes: according to the multi-layer topology model and status information The concentrator conducts analysis to determine whether the concentrator is a faulty device or whether the non-concentrator is a faulty device in the distribution network.

For the analysis of the concentrator, the state information of the distribution network includes the power supply information of the concentrator and the heartbeat data of the concentrator. heartbeat data. For this situation, the concentrator is analyzed according to the multi-layer topology model and state information to determine whether the concentrator in the distribution network is a faulty device or whether the non-concentrator device is a faulty device. It can be divided into the following two scenarios:

Scenario 1: One low-voltage outlet switch supplies power to multiple concentrators, that is, one low-voltage outlet switch has multiple concentrators.

Optionally, analyzing the concentrator according to the multi-layer topology model and status information to determine whether the concentrator in the distribution network is a faulty device or whether a non-concentrator device is a faulty device includes steps S1 to S7, specifically as follows:

Step S1, when the disconnection signal of the first concentrator is received and the disconnection signal of the first optical network unit corresponding to the first concentrator is not received, the working status of the second concentrator is obtained, wherein, the first concentrator Both the second concentrator and the first concentrator are powered by the first low-voltage outlet switch.

Specifically, there may be one or more second concentrators.

Step S3, judging whether the working state of the second concentrator is normal.

If there are multiple second concentrators, it is necessary to determine whether the working status of each second concentrator is normal.

Step S5, if it is determined that the working state of the second concentrator is normal, determine that the faulty device is the first concentrator.

Specifically, in the case where there are multiple second concentrators, it is determined that the faulty device is the first concentrator only when it is determined that the working status of each second concentrator is normal.

When the faulty device is the first concentrator, the output fault result is concentrator fault.

Step S7, if it is determined that the working state of the second concentrator is abnormal, determine that the faulty device is the first low-voltage outlet switch.

Specifically, it is necessary to determine that the faulty device is the first low-voltage outlet switch only when it is determined that the working state of each second concentrator is abnormal.

When the faulty device is the first low-voltage outlet switch, the output fault result is tripping of the low-voltage outlet switch.

Fig. 2 is a schematic diagram of a low-voltage outlet switch supplying power to multiple concentrators in another optional method for monitoring a distribution network according to an embodiment of the present invention.

Referring to Fig. 2, the low-voltage outgoing line switch 489 (ie, the first low-voltage outgoing line switch) is connected to the concentrator 11, the concentrator 12 and the concentrator 13 through the access point JR, and supplies power to the three concentrators. Among them, the concentrator 11 collects the meter voltage of the user representatives in Building No. 11 to No. 15, the concentrator 12 collects the meter voltage of the user representatives in Building No. 16 to No. 17, and the concentrator 13 collects the meter voltage of the user representatives in Building No. 18. meter voltage.

In the embodiment of the present invention, assuming that the first concentrator is concentrator 11, then there are two second concentrators, namely concentrator 12 and concentrator 13, and the concentrators are analyzed according to the multi-layer topology model and status information , to determine whether the concentrator in the distribution network is a faulty device or whether the non-concentrator is a faulty device, including the following steps S111 to step S117:

Step S111 , when receiving the offline signal of the concentrator 11 (ie, the first concentrator), acquire the working status of the concentrator 12 and the concentrator 13 .

Step S113, judging whether the working status of concentrator 12 and concentrator 13 is normal, that is, judging whether concentrator 12 can still collect the meter voltage of user representatives in Building No. 16 to No. 17, and whether concentrator 13 can still collect Meter voltage for user representatives in Building 18.

Step S115 , if both the concentrator 12 and the concentrator 13 are in normal working status, it is determined that the faulty device is the concentrator 11 . Specifically, if it is judged that concentrator 12 can still collect the meter voltage of user representatives in Building No. 16 to No. 17, and concentrator 13 can still collect the meter voltage of user representatives in Building No. 18, then it is determined that the faulty equipment is Concentrator 11.

In step S117, if both the concentrator 12 and the concentrator 13 are in abnormal working states, it is determined that the faulty device is the low-voltage outlet switch 489 . Specifically, if it is judged that the concentrator 12 cannot collect the meter voltage of the user representatives in Building No. 16 to No. 17, and the concentrator 13 cannot collect the meter voltage of the user representatives in Building No. 18, then it is determined that the faulty equipment is a low-voltage outgoing line Switch 489.

In the embodiment of the present invention, when receiving the offline signal of a certain concentrator, first find the low-voltage outgoing line switch that supplies power to the concentrator, and secondly find other concentrators that are carried by the above-mentioned low-voltage outgoing line switch in reverse, and then Judging whether the working status of other concentrators is normal, when the working status of other concentrators is all normal, then determine that the faulty equipment is the above-mentioned concentrator that generates the offline signal; when the working status of other concentrators is all abnormal (that is, all offline ), it is determined that the faulty device is the above-mentioned low-voltage outlet switch. In this scenario, it can be determined 100% whether the concentrator is a faulty device.

Scenario 2: A low-voltage outlet switch supplies power to a concentrator, that is, a low-voltage outlet switch with a concentrator.

For the second scenario above, it is further divided into two modes: the primary grid and the end users of the communication network have crossover and the primary grid and the end users of the communication network have no crossover. Next, we will introduce the above two modes respectively.

Mode 1: There is an intersection between the primary power grid and the end users carried by the communication network.

Optionally, in the embodiment of the present invention, analyzing the concentrator according to the multi-layer topology model and status information to determine whether the concentrator in the distribution network is a faulty device or whether a device other than the concentrator is a faulty device includes step S9 Go to step S13, specifically as follows:

Step S9, when the disconnection signal of the third concentrator is received and the disconnection signal of the second optical network unit corresponding to the third concentrator is not received, the meter voltage of the first target user is obtained, wherein, The meter voltage of the first target user is collected through the fourth concentrator, the meter voltage of the second target user is collected through the third concentrator, and the third concentrator, the first target user and the second target user are all outgoing from the second low voltage switch power supply.

The first target user is a user representative among the multiple users powered by the second low-voltage outlet switch, and is located within the collection range of the fourth concentrator. Similarly, the second target user is also a user representative among the multiple users powered by the second low-voltage outlet switch, and is located within the collection range of the third concentrator.

Step S11, judging whether the meter voltage of the first target user is normal.

Step S13, if it is determined that the meter voltage of the first target user is normal, determine that the faulty device is the third concentrator.

When the faulty device is the third concentrator, the output fault result is concentrator fault.

It should be noted that the third concentrator and the fourth concentrator are powered by different low-voltage outlet switches.

Further optionally, in the embodiment of the present invention, after judging whether the meter voltage of the first target user is normal, the concentrator is analyzed according to the multi-layer topology model and status information to judge whether the concentrator in the distribution network is Whether the faulty device or the non-concentrator device is a faulty device also includes step S15 to step S21, specifically as follows:

Step S15, if it is judged that the meter voltage of the first target user is abnormal, then obtain a preset number of meter voltages of the third target user, wherein the meter voltage of the third target user is collected through the fourth concentrator , the third target user is also powered by the second low-voltage outlet switch, and the preset number is greater than or equal to one.

Specifically, the preset number can be set according to requirements, for example, the preset number is 2. The third target user is a non-user representative user among the multiple users powered by the second low-voltage outlet switch, which is randomly selected and located within the collection range of the fourth concentrator. The first target user, the second target user and the third target user are different users.

Step S17, judging whether the meter voltage of the third target user is normal. Specifically, it is judged whether the meter voltages of the preset number of third target users are normal.

Step S19, if it is judged that the meter voltage of the third target user is normal, determine that the faulty device is the third concentrator. Specifically, if it is determined that the meter voltages of the preset number of third target users are all normal, then it is determined that the faulty device is the third concentrator.

Step S21, if it is determined that the meter voltage of the third target user is abnormal, determine that the faulty device is the second low-voltage outlet switch. Specifically, if it is determined that the meter voltages of the preset number of third target users are all abnormal, then it is determined that the faulty device is the second low-voltage outlet switch.

When the faulty device is the second low-voltage outgoing line switch, the output fault result is that the low-voltage outgoing line switch trips.

Fig. 3 is a schematic diagram of another optional method for monitoring a distribution network according to an embodiment of the present invention, in which a primary grid and a communication network cross. As shown in FIG. 3 , in the embodiment of the present invention, two power distribution rooms are included, namely A power distribution room and B power distribution room.

The configuration of power distribution room A is explained as follows: power distribution room A is equipped with two distribution transformers (distribution transformer 10-1 and distribution transformer 10-2), distribution transformer low-voltage main switch 401, distribution transformer low-voltage Main switch 402 , carrier central office 1 , carrier central office 2 , an optical network unit (ie, ONU1 ), and multiple low-voltage outgoing line switches including low-voltage outgoing line switch 411 and low-voltage outgoing line switch 421 . Specifically, the distribution transformer 10 - 1 is connected to the distribution transformer low-voltage main switch 401 , and a plurality of low-voltage outlet switches including a low-voltage outlet switch 411 are arranged under the distribution transformer low-voltage main switch 401 . The ONU1 is connected to the carrier local terminal 1 and the carrier local terminal 2 respectively through the network cable, and is also connected to the distribution transformer low-voltage main switch 402 through the ONU power line, the carrier local terminal 1 is connected to the distribution transformer low-voltage main switch 401 through the power line, and the carrier local terminal 2. Connect to the low-voltage main switch 402 of the distribution transformer through the power line. The distribution transformer 10-2 is also connected to the low-voltage main switch 402 of the distribution transformer, and a plurality of low-voltage outgoing switches including the low-voltage outgoing switch 421 are arranged under the low-voltage main switch 402 of the distribution transformer.

The configuration of power distribution room B is described as follows: distribution transformer 10-3, low-voltage main switch 403 of distribution transformer, local carrier terminal 3, an optical network unit (that is, ONU2), and low-voltage outgoing line are installed in power distribution room B. A plurality of low-voltage outlet switches including switch 431. Specifically, the distribution transformer 10-3 is connected to the low-voltage main switch 403 of the distribution transformer, and a plurality of low-voltage outgoing line switches including the low-voltage outgoing line switch 431 are arranged under the low-voltage main switch 403 of the distribution transformer. The ONU2 is connected to the carrier local end 3 through a network cable, and is also connected to the low-voltage main switch 403 of the distribution transformer through the ONU power line, and the carrier local end 3 is connected to the low-voltage main switch 403 of the distribution transformer through a power line.

Concentrator A is used to collect user representatives on floors in building A except for the parts marked with slashes (that is, the user representatives in building A from the first floor to the fourth floor and the sixth floor from bottom to top) meter voltage. In addition, the concentrator A is connected to the low-voltage outlet switch 421 for power supply through the concentrator power line. Concentrator B is used to collect the voltmeters of all users in Building B, and the voltmeters of users in Building A marked with oblique lines, but its power supply is the low-voltage outgoing line in B distribution room The switch 431, the concentrator B is connected to the low-voltage outlet switch 431 through the concentrator power line.

In Figure 3, PJ01 411, PJ01 421 and PJ01 431 all represent access points.

Referring to Fig. 3, in the embodiment of the present invention, the concentrator is analyzed according to the multi-layer topology model and state information to determine whether the concentrator in the distribution network is the faulty device or not. Whether the device of the concentrator is the faulty device is as follows from step S119 to step S131:

Step S119, when the offline signal of concentrator A is received and the offline signal of ONU1 in the power distribution room of A is not received at the same time, check the users in the users marked with oblique lines in building A carried (collected) by concentrator B The meter voltage of the representative (ie, the first target user). This step is the same as step S9, and will not be repeated here.

It should be noted that the concentrator A in the power distribution room A in step S119 is equivalent to the third concentrator in the above step S9, the ONU1 in the power distribution room A is equivalent to the second optical network unit in the above step S9, and the user representative in step S119 The meter voltage corresponds to the meter voltage of the first target user in the above-mentioned step S9. In FIG. 3 , the user representatives on the 1st floor to the 4th floor, and the 6th floor from bottom to top in building A in FIG. 3 correspond to the second target user in the above step S9. It should be noted that, in the embodiment of the present invention, the low-voltage outgoing line switch 421 supplies power to users and the concentrator A in building A, that is, the low-voltage outgoing line switch 421 is the second low-voltage outgoing line switch in the above step S9.

Step S121, judging whether the meter voltage of the user representative is normal. This step is equivalent to the above-mentioned step S11, and will not be repeated here.

Wherein, if normal, execute step S123; if abnormal, execute step S125.

In step S123, it is determined that the faulty device is the concentrator A. This step is the same as step S13, and will not be repeated here

Step S125, and then randomly select 2 low-frequency meters to automatically tap. Specifically, randomly select the meter voltages of two users other than the user representative from the users marked with oblique lines in Building A. This step is equivalent to the above step S15, and will not be repeated here.

It should be noted that the two in step S125 are equivalent to the preset number in the above step S15, and the meter voltages of two randomly selected users other than the user representative in step S125 are equivalent to the first meter voltage of the preset number obtained in the above step S15. Three target user's meter voltage.

Step S127, judging whether the return values of the automatic taps of the two low-frequency meters are normal. This step is equivalent to the above-mentioned step S17, and will not be repeated here.

Wherein, if the return values of the two low-frequency meters are normal, execute step S129; if the return values of the two low-frequency meters are abnormal, execute step S131.

Step S129, judging that the faulty device is the concentrator A. This step is equivalent to the above-mentioned step S19, and will not be repeated here.

Step S131 , judging that the faulty device is the low-voltage outlet switch 421 . This step is equivalent to the above-mentioned step S21, and will not be repeated here.

It should also be noted that the low-voltage outgoing line switch 421 in step S131 is the second low-voltage outgoing line switch in the above-mentioned step S19.

In the embodiment of the present invention, through the above steps, it can be determined 100% whether the concentrator is a faulty device (that is, whether the concentrator is faulty).

Mode 2: There is no intersection between the primary power grid and the end users carried by the communication network.

Optionally, in the embodiment of the present invention, the concentrator is analyzed according to the multi-layer topology model and status information to determine whether the concentrator in the distribution network is the faulty device or not. Whether the equipment of the concentrator is the faulty equipment comprises step S23 to step S27, specifically as follows:

Step S23, if the disconnection signal of the fifth concentrator is received and the disconnection signal of the third optical network unit corresponding to the fifth concentrator is not received, it is judged whether the fourth ONU is received within the first preset time. The power outage report message of the target user, wherein both the fourth target user and the fifth concentrator are powered by the third low-voltage outlet switch.

Specifically, the duration of the first preset time can be set according to requirements, for example, 10 minutes. The number of the fourth target user is included in the power outage report message. The fourth target user is any user among the multiple users powered by the third low-voltage outlet switch, and is located within the collection range of the fifth concentrator.

Step S25, if it is judged that a power outage report message from the fourth target user is received within the first preset time, determine that the faulty device is the third low-voltage outlet switch.

When the faulty device is the third low-voltage outlet switch, the output fault result is tripping of the low-voltage outlet switch.

Step S27, if it is judged that no power outage report message from the fourth target user has been received within the first preset time, determine that the faulty device is the third low-voltage outlet switch or the fifth concentrator.

Further optionally, in the embodiment of the present invention, after determining that the faulty device is the third low-voltage outlet switch or the fifth concentrator, the concentrator is analyzed according to the multi-layer topology model and status information to determine whether the concentrator in the distribution network Whether the device is a faulty device or whether the non-concentrator is a faulty device also includes step S29 to step S31:

Step S29 , judging whether a power outage report message from the fourth target user is received within a second preset time, wherein the start time of the second preset time is the end time of the first preset time.

Specifically, the duration of the second preset time can also be set according to user requirements, and can be the same as or different from the duration of the first preset time, for example, 10 minutes.

Step S31 , if it is determined that a power outage report message from the fourth target user is received within the second preset time, determine that the faulty device is the third low-voltage outlet switch.

Fig. 4 is a schematic diagram of another optional method for monitoring a distribution network according to an embodiment of the present invention, in which there is no intersection between the primary power grid and the communication network. As shown in FIG. 4 , in the embodiment of the present invention, only one power distribution room is included, that is, A power distribution room.

The configuration of the power distribution room A in FIG. 4 is the same as that of the power distribution room A in FIG. 3 . For details, please refer to the description of the power distribution room A in the above embodiments, and details will not be repeated here.

It should be noted that, in the embodiment of the present invention, the concentrator A is used to collect the meter voltage of the user representatives in the 1st to 3rd floors of building A. Outgoing switch 411 is connected. In addition, the low-voltage outlet switch 411 also supplies power to users on floors 1 to 3 of Building A. In Figure 4, PJ01 of 411 and PJ01 of 421 represent access points.

Referring to Fig. 4, in the embodiment of the present invention, the concentrator is analyzed according to the multi-layer topology model and state information to determine whether the concentrator in the distribution network is a faulty device or whether the non-concentrator is a faulty device, including the following steps S133 to step S143:

Step S133 , when the offline signal of the concentrator A is received and the offline signal of the ONU1 in the power distribution room of A is not received, the low-voltage outlet switch 411 for supplying power to the concentrator A is obtained.

Wherein, the concentrator A in step S133 is equivalent to the fifth concentrator in the above-mentioned step S23, the ONU1 in the power distribution room of A in the step S133 is equivalent to the third optical network unit in the above-mentioned step S23, and the low-voltage outlet switch in the step S133 411 is equivalent to the third low-voltage outlet switch in the above step S23.

Step S135, check whether received within 10 minutes the low-voltage outgoing line switch 411 (power supply) users (that is, users on the 1st to 3rd floors of Building A) received a power outage repair message, wherein the power outage repair message contains the user number. This step is equivalent to judging in the above-mentioned step S23 whether a power outage report message from the fourth target user has been received within the first preset time, and the description will not be repeated here.

It should be noted that the 10 minutes in step S135 is equivalent to the first preset time in step S23 above, and the user brought by the low-voltage outlet switch 411 in step S135 is equivalent to the fourth target user in step S23 above.

Wherein, if a power outage report message is received, step S137 is performed; if a power outage report message is not received, step S139 is performed.

In step S137, it is determined that the faulty device is the low-voltage outlet switch 411. This step is equivalent to the above-mentioned step S25, and will not be repeated here.

In step S139, it is determined that the faulty device is the concentrator A or the low-voltage outlet switch 411. This step is equivalent to the above step S27, and will not be repeated here.

Step S141, if it has been determined that the faulty device is the concentrator A or the low-voltage outgoing line switch 411, then judge again whether a power outage report has been received from the user (that is, the users on the 1st to 3rd floors of Building A) brought by the low-voltage outgoing line switch 411 within 10 minutes information. This step is equivalent to the above-mentioned step S29, and will not be repeated here.

Wherein, if a power outage report message from the user is received, step S143 is executed.

In step S143 , it is determined that the faulty device is the low-voltage outlet switch 411 . This step is equivalent to the above-mentioned step S31, and will not be repeated here.

Optionally, in this embodiment of the present invention, the device includes an optical network unit, and analyzing the device according to the multi-layer topology model and state information to determine whether there is a faulty device in the distribution network includes: according to the multi-layer topology model and state information The optical network unit is analyzed to judge whether the optical network unit in the distribution network is a faulty device or whether the equipment other than the optical network unit is a faulty device.

For the analysis of the optical network unit, the state information of the distribution network includes optical topology data, ONU ledger data, ONU operation data, communication maintenance plan and communication cable failure. Among them, optical topology data includes OLT topology data and ONU topology data; ONU ledger data includes ONU network port corresponding distribution transformer and ONU power supply data (corresponding to distribution transformer); ONU operation data includes ONU real-time offline signal, And the disconnected signal data of the connection port between the ONU and the central office equipment; the communication maintenance plan includes the start time, end time and affected ONU of the communication maintenance; the communication optical cable fault includes the cable fault and fault briefing information; the fault briefing information includes Start time, recovery time, and ONU impact. For this situation, the optical network unit is analyzed according to the multi-layer topology model and state information to determine whether the optical network unit in the distribution network is a faulty device or whether the equipment other than the optical network unit is a faulty device can be divided into the following two scenarios :

Scenario 3: There is power distribution automation. Distribution Automation (DA) is a comprehensive information management system integrating computer technology, data transmission, control technology, modern equipment and management.

Optionally, in the embodiment of the present invention, the optical network unit is analyzed according to the multi-layer topology model and state information to determine whether the optical network unit in the distribution network is a faulty device or whether a device other than an optical network unit is a faulty device Including step S33 to step S37, specifically as follows:

Step S33, receiving a disconnection signal from the fourth ONU.

Step S35, acquiring the state of the 10KV incoming line switch corresponding to the target distribution transformer, wherein the target distribution transformer is the distribution transformer corresponding to the fourth optical network unit.

Step S37, according to the state of the 10KV incoming line switch, it is judged whether the faulty device is the fourth optical network unit.

Specifically, in step S37, according to the state of the 10KV incoming line switch, judging whether the faulty device is the fourth optical network unit includes the following steps S371:

Step S371, if the 10KV incoming switch satisfies preset conditions, then determine that the faulty device is the fourth optical network unit, wherein the preset conditions are closed, current, and active power. If the 10KV incoming line switch does not meet the preset conditions, it is determined that the power supply range or area of the distribution transformer corresponding to the 10KV incoming line switch is out of power.

When the faulty device is the fourth optical network unit, the output fault result is that the optical network unit is faulty.

Scenario 4: No power distribution automation.

For the above scenario 4, it is further divided into two modes: the primary grid and the end users of the communication network have crossover and the primary power grid and the end users of the communication network do not have crossover. Next, we will introduce the above two modes respectively.

Mode 3: There is an intersection between the end users of the primary power grid and the communication network. That is, the users collected by all the concentrators carried by the ONU are powered by a power supply other than the power distribution room (column transformer) where the ONU is located (that is, there is a spy meter).

Optionally, in this embodiment of the present invention, the optical network unit is analyzed according to the multi-layer topology model and status information to determine whether the optical network unit in the distribution network is the faulty device or Whether the device other than the optical network unit is the faulty device includes step S41 to step S51, specifically as follows:

Step S41 , in the case of receiving the disconnection signal of the fifth ONU, where the fifth ONU is an ONU associated with the sixth concentrator, acquiring a communication maintenance plan and communication cable failure information.

Step S43, judging whether there is a communication failure in the fifth ONU according to the communication maintenance plan and the failure information of the communication optical cable.

Step S45, if it is judged that there is no communication failure in the fifth optical network unit according to the communication maintenance plan and the communication cable failure information, obtain the meter voltage of the fifth target user, wherein the meter voltage of the fifth target user passes through the first The seventh concentrator collects the meter voltage of the sixth target user, and the sixth concentrator user collects the meter voltage of the sixth target user. Both the fifth target user and the sixth target user are powered by the low-voltage main switch of the first distribution transformer.

The fifth target user is a user representative among the multiple users powered by the low-voltage main switch of the first distribution transformer, and is located within the collection range of the seventh concentrator. Similarly, the sixth target user is also a user representative among the multiple users powered by the low-voltage main switch of the first distribution transformer, and the sixth target user is located within the collection range of the sixth concentrator.

Step S47, judging whether the target meter voltage of the fifth target user is normal.

Step S49, if it is determined that the target meter voltage of the fifth target user is normal, determine that the faulty device is the fifth ONU.

When the faulty device is the fifth ONU, the output fault result is that the ONU is faulty.

Step S51, when it is determined that the meter voltage of the fifth target user is abnormal, determine that the faulty device is the low-voltage main switch of the first distribution transformer.

When the faulty device is the low-voltage main switch of the first distribution transformer, the output fault result is that the low-voltage main switch of the distribution transformer trips.

It should be noted that the sixth concentrator and the seventh concentrator are powered by different low-voltage main switches of distribution transformers.

Refer to FIG. 3 for the schematic diagram of the third mode above. Specifically, for this embodiment, the ONU1 in the power distribution room A in FIG. 3 is equivalent to the fifth optical network unit; the concentrator A in FIG. 3 is equivalent to the sixth concentrator; the concentrator B in FIG. 3 is equivalent to the seventh concentrator distribution transformer low-voltage main switch 402 in Figure 3 is equivalent to the first distribution transformer low-voltage main switch; the sixth concentrator collects user representatives (that is, the sixth target user) in the floor of A building in Figure 3 except the hatched part Meter voltage: the seventh concentrator collects the meter voltage of the user representative (ie, the fifth target user) on the floor of the oblique line in Building A in FIG. 3 , and the meter voltage of the user representative in Building B.

In the embodiment of the present invention, through the above steps, it can be determined 100% whether the ONU is a faulty device (that is, whether the ONU is faulty).

Mode 4: There is no intersection between the primary power grid and the end users carried by the communication network. That is, all the meter voltage collected by the concentrator attached to the ONU comes from the power distribution room (column transformer) where the ONU is located.

Optionally, in the embodiment of the present invention, the optical network unit is analyzed according to the multi-layer topology model and state information to determine whether the optical network unit in the distribution network is a faulty device or whether a device other than an optical network unit is a faulty device Including step S53 to step S61, specifically as follows:

Step S53, in the case of receiving the disconnection signal of the sixth optical network unit, acquiring the communication maintenance plan and the failure information of the communication optical cable.

Step S55, judging whether the sixth ONU has a communication failure according to the communication maintenance plan and the failure information of the communication optical cable.

Step S57, when it is judged that there is no communication fault in the sixth optical network unit according to the communication maintenance plan and the fault information of the communication optical cable, it is judged whether a power outage report message from the seventh target user has been received within the third preset time, wherein, the first Both the seven target users and the sixth optical network unit are powered by the low-voltage main switch of the second distribution transformer.

Specifically, the seventh target user is any user among the multiple users powered by the low-voltage main switch of the second distribution transformer.

Step S59, when it is judged that the seventh target user's power outage report message is received within the third preset time, it is determined that the faulty device is the low-voltage main switch of the second distribution transformer.

When the faulty device is the low-voltage main switch of the second distribution transformer, the output fault result is that the low-voltage main switch of the distribution transformer trips.

Step S61, if it is judged that no power outage report message from the seventh target user has been received within the third preset time, determine that the faulty device is the second distribution transformer low-voltage main switch or the sixth optical network unit.

Further optionally, after determining that the faulty device is the second distribution transformer low-voltage main switch or the sixth optical network unit, wherein the optical network unit is analyzed according to the multi-layer topology model and status information, to determine whether the optical network unit in the distribution network Whether the unit is a faulty device or whether a device other than an optical network unit is a faulty device also includes the following steps S63 to S65:

Step S63 , judging whether a power outage report message from the seventh target user is received within a fourth preset time, wherein the start time of the fourth preset time is the end time of the third preset time.

Step S65, when it is judged that a power outage report message is received within the fourth preset time, determine that the faulty device is the low-voltage main switch of the second distribution transformer.

Fig. 5 is a schematic diagram of another optional monitoring method for a power grid according to an embodiment of the present invention, in which there is no intersection between the primary power grid and the communication network. As shown in FIG. 5 , in the embodiment of the present invention, one power distribution room is included, that is, A power distribution room.

The configuration of the power distribution room A in FIG. 5 is the same as that of the power distribution room A in FIG. 3 . For details, please refer to the description of the power distribution room A in the above embodiments, and details will not be repeated here. The concentrator A and the users on floors 1 to 6 of building A are powered by the low-voltage outgoing line switch 421, and the concentrator A is connected to the low-voltage outgoing line switch 421 through the concentrator power line. In Figure 5, the 421-way PJ01 represents the access point.

Referring to FIG. 5, in the embodiment of the present invention, the optical network unit is analyzed according to the multi-layer topology model and state information to determine whether the optical network unit in the distribution network is the faulty device or Whether the device other than the optical network unit is the faulty device includes the following steps S211 to S221:

Step S211, when receiving the disconnection signal of the ONU1 in the power distribution room A, obtain the communication maintenance plan and communication cable failure information to determine whether the above-mentioned ONU1 has a communication problem.

Specifically, the ONU1 in the power distribution room A in step S211 is equivalent to the sixth optical network unit in step S53.

Step S213, if it is judged that there is no communication problem in ONU1, then check the low-voltage main switch 402 of the distribution transformer that supplies power to the ONU1, and whether the user (that is, the user in Building A) who supplies power at the same time has a power outage report message within 10 minutes, wherein, The user's number is included in the power outage report message.

Specifically, the low-voltage main switch 402 of the distribution transformer in step S213 is equivalent to the second low-voltage main switch of the distribution transformer in the above step S57, and the user who simultaneously supplies power to the low-voltage main switch of the distribution transformer in step S213 is the seventh target user in the above step S57. The 10 minutes in S213 is the third preset time in the above step S57.

Step S215, if there is a repair report from the user within 10 minutes, then it is determined that the faulty device is the low-voltage main switch 402 of the distribution transformer.

Step S217, if there is no repair report from the user within 10 minutes, then it is determined that the faulty device is ONU1 or the low-voltage main switch 402 of the distribution transformer.

Step S219, if it is determined that the faulty device is the ONU1 or the low-voltage main switch 402 of the distribution transformer, it is judged again whether there is a user (ie, a user in building A) calling for repair within 10 minutes. Wherein, if there is a user report for repair, step S221 is executed.

In step S221, it is determined that the faulty device is the low-voltage main switch 402 of the distribution transformer.

It can be seen from the above description that in the embodiment of the present invention, judging whether an ONU is faulty depends on the situation of the user reporting for repair, and it is possible to accurately judge whether some ONUs are faulty, but it is impossible to make a 100% judgment.

In order to improve the accuracy of judging whether the ONU is faulty, optionally, in the embodiment of the present invention, the device further includes an auxiliary power supply, which is used to switch the first preset Supply power to the seventh optical network unit within the time period. Specifically, the auxiliary power supply may be a battery or an uninterruptible power supply (UPS for short).

Wherein, the optical network unit is analyzed according to the multi-layer topology model and state information to determine whether the optical network unit in the distribution network is a faulty device or whether a device other than an optical network unit is a faulty device, including steps S67 to S71:

Step S67, in the case of receiving the disconnection signal of the seventh optical network unit, judge whether the network port loss signal of the seventh optical network unit is received within the first preset time period before receiving the disconnection signal, wherein, The lost signal of the network port corresponds to the distribution transformer supplying power to the seventh optical network unit.

Specifically, since the auxiliary power supply may continue to supply power to the seventh ONU for 1 to 5 minutes when the main power supply of the seventh ONU is powered off, the first preset time period may be 1 to 5 minutes.

Step S69, if it is judged that the network port loss signal is received, it is determined that the faulty device is a distribution transformer supplying power to the seventh optical network unit.

When the faulty device is a distribution transformer, the output fault result is a distribution transformer fault.

Step S71, if it is judged that the network port loss signal is not received, determine that the faulty device is the seventh optical network unit.

In the embodiment of the present invention, by setting the auxiliary power supply, it can be determined 100% whether the optical network unit is faulty.

In order to improve the accuracy of judging whether the ONU is faulty, optionally, in the embodiment of the present invention, the device further includes an auxiliary power supply, and the auxiliary power supply is used when the main power supply of the eighth optical network unit Supply power to the seventh optical network unit within the time period. Specifically, the auxiliary power supply may be a battery or an uninterruptible power supply (UPS for short).

Wherein, the optical network unit is analyzed according to the multi-layer topology model and state information to determine whether the optical network unit in the distribution network is a faulty device or whether a device other than an optical network unit is a faulty device, including steps S73 to S77:

Step S73, in the case of receiving the network port loss signal of the eighth optical network unit, judge whether to receive the disconnection signal of the eighth optical network unit within the second preset time period after receiving the network port loss signal .

Specifically, since the auxiliary power supply may continue to supply power to the eighth ONU for 1 to 5 minutes when the main power supply of the eighth ONU is powered off, the second preset time period may be 1 to 5 minutes.

Step S75, if it is judged that the disconnection signal is received, it is determined that the faulty device is a distribution transformer supplying power to the eighth optical network unit.

Specifically, if it is determined that the disconnected signal is received, if the network port loses the signal and corresponds to the power distribution transformer that supplies power to the eighth optical network unit (that is, if the network port loses the signal to the network port corresponding to the power distribution transformer The electrical transformer and the distribution transformer supplying power to the eighth optical network unit are the same transformer), and it is determined that the faulty device is the distribution transformer supplying power to the eighth optical network unit.

Step S77, if it is judged that no disconnection signal has been received, determine that the faulty device is the distribution transformer corresponding to the network port loss signal. Specifically, it is determined that the faulty device is a power distribution transformer that supplies power to the network port corresponding to the lost signal of the network port.

When the faulty device is a distribution transformer, the output fault result is a distribution transformer fault.

In the embodiment of the present invention, by setting the auxiliary power supply, it can be determined 100% whether the optical network unit (that is, the ONU) is faulty.

Fig. 6 is a schematic diagram of tripping of a low-voltage outlet switch in another optional monitoring method for a distribution network according to an embodiment of the present invention. In the embodiment of the present invention, the community power distribution room includes two distribution transformers, namely a transformer 10-7 and a transformer 10-8.

Among them, the transformer 10-7 is connected to the low-voltage main switch 407 of the distribution transformer, and the low-voltage outgoing line switch 471, the low-voltage outgoing line switch 472 and the low-voltage outgoing line switch 473 are arranged under the low-voltage main switch 407 of the distribution transformer. The switch 1-1 is connected, and the π1 connection box includes not only the switch 1-1, but also the switch 1-2 and the switch 1-3. The light-one main switch is connected with the switches 1-2 in the π1 connection box, and is also connected with the users in the 1st to 9th floors of Building 1 respectively. It should be noted that user A on floors 1 to 3 of Building 1 is the target user in the above embodiment, user A on floors 4 to 6 is the target user in the above embodiment, and user A on floors 7 to 9 is the target user in the above embodiment. is the target user in the above embodiment. The meter voltages of A users on floors 1 to 3 of Building 1, users of A on floors 4 to 6 of Building 1, and users of A on floors 7 to 9 of Building 1 can be collected through the concentrator 1, that is, to collect Meter voltage for Table 1, Table 2, and Table 3.

Among them, the transformer 10-8 is connected to the distribution transformer low-voltage main switch 408, and the distribution transformer low-voltage main switch 408 is provided with a low-voltage outlet switch 484, a low-voltage outlet switch 485, and a low-voltage outlet switch 486. Among them, the switches 1-3 in the π1 connection box Connect with switch 1-1 in the π2 connection box. Referring to Fig. 6, similarly, three switches are also included in the π2 connection box, which are 1-1, 1-2 and 1-3 respectively, and the light two main switch is connected with the switch 1-2 in the π2 connection box, and also connected with User connections in floors 1 to 9 of Building 2. It should be noted that user A on floors 1 to 3 of Building 2 is the target user in the above embodiment, user A on floors 4 to 6 is the target user in the above embodiment, and user A on floors 7 to 9 is the target user in the above embodiment. It is also the target user in the above embodiments. The meter voltages of A users on floors 1 to 3 of Building 2, users A on floors 4 to 6 of Building 2, and users A on floors 7 to 9 of Building 2 can be collected through the concentrator 2, that is, collecting Meter voltages for Table 4, Table 5, and Table 6.

Referring to Fig. 6, according to whether the concentrator 1 and the concentrator 2 generate a disconnection signal, the embodiment of the present invention is divided into two situations:

Situation 1: When receiving the off-line signal of concentrator 1 and the off-line signal of concentrator 2, it can first judge whether the power outage is caused by the maintenance plan according to the power grid maintenance plan. In the case of judging that the power outage is not caused by the maintenance plan, considering that the possibility of simultaneous tripping of the main light switch 1 and the light 2 main switch is very small, it is directly judged that the low-voltage outgoing line switch 471 tripped, that is, the low-voltage outgoing line switch 471 is a faulty device.

Situation 2: When receiving the disconnection signal from concentrator 1 but not receiving the disconnection signal from concentrator 2, you can first judge whether the maintenance plan caused the power outage according to the grid maintenance plan. In the case of judging that the power outage is not caused by the maintenance plan, it is also necessary to judge whether the meter voltages of users A on floors 1 to 3, users A on floors 4 to 6, and users A on floors 7 to 9 of Building 1 are normal. That is, judge whether the meter voltages of Table 1, Table 2, and Table 3 are normal. If it is judged that at least one of the meter voltages of users A on the 1st to 3rd floors, 4th to 6th floors, and 7th to 9th floors of Building 1 is abnormal, then it is determined that the concentrator 1 is faulty or the light The switch trips, that is, the concentrator 1 or the light 1 is always a faulty device.

Fig. 7 is a schematic diagram of tripping of a low-voltage main switch of a distribution transformer in another optional monitoring method for a distribution network according to an embodiment of the present invention.

Referring to Fig. 7, the embodiment of the present invention includes 6 π connection boxes and 6 concentrators, wherein the 6 π connection boxes are respectively π3 connection box, π4 connection box, π5 connection box, π6 connection box, π7 connection box and π8 connection boxes, and each π connection box is equipped with three switches, namely switch 1-1, switch 1-2 and switch 1-3. The six concentrators are concentrator 3, concentrator 4, concentrator Concentrator 5, concentrator 6, concentrator 7 and concentrator 8. The community power distribution room includes two transformers, namely a transformer 10-9 and a transformer 10-10.

Wherein, the transformer 10-9 is connected with the low-voltage main switch 409 of the distribution transformer, and a low-voltage outgoing line switch 491 , a low-voltage outgoing line switch 492 and a low-voltage outgoing line switch 493 are arranged under the low-voltage main switch 409 of the distribution transformer. The low-voltage outlet switch 491 is connected with the switch 1-1 in the π3 connection box. The π3 junction box corresponds to the concentrator 3, and the switches 1-3 inside it are connected to the switches 1-1 of the π4 junction box, and the π4 junction box corresponds to the concentrator 4.

The low-voltage outlet switch 492 is connected with the switch 1-1 in the π5 connection box. The π5 junction box corresponds to the concentrator 5, and the switches 1-3 in it are connected to the switches 1-1 of the π6 junction box, and the π6 junction box corresponds to the concentrator 6.

The low-voltage outlet switch 493 is connected with the switch 1-1 in the π7 connection box. The π7 junction box corresponds to the concentrator 7, and the switches 1-3 in it are connected to the switches 1-1 of the π8 junction box, and the π8 junction box corresponds to the concentrator 8.

The transformer 10-10 is connected to the low-voltage main switch 4102 of the distribution transformer, and a low-voltage outgoing line switch 4104, a low-voltage outgoing line switch 4105, and a low-voltage outgoing line switch 4106 are arranged under the low-voltage main switch 4102 of the distribution transformer.

In this embodiment, when the offline signals of all concentrators powered by the low-voltage outgoing line switch 491, the low-voltage outgoing line switch 492, and the low-voltage outgoing line switch 493 are received, the low-voltage outgoing line switch 4104, the low-voltage outgoing line switch 4105, and the low-voltage outgoing line switch When the signal of all concentrators powered by switch 4106 is disconnected, firstly, according to the grid maintenance plan, the power outage caused by the plan can be ruled out; secondly, all concentrators powered by low-voltage outgoing line switch 491, low-voltage outgoing line switch 492, and low-voltage outgoing line switch 493 simultaneously Power failure, all the concentrators powered by the low-voltage outlet switch 4104, low-voltage outlet switch 4105, and low-voltage outlet switch 4106 have not lost power, and it can be determined that the low-voltage switch 409 of the distribution transformer has tripped, that is, the low-voltage switch 409 of the distribution transformer is a faulty device.

Fig. 8 is a schematic diagram of another optional method for monitoring a distribution network according to an embodiment of the present invention, in which a switch of a switching station trips. The embodiment of the present invention refers to the tripping of the switching station switch in the distribution network without a distribution automation system.

Referring to FIG. 8 , the embodiment of the present invention includes a switching station switch 211 of A switching station and 3 community power distribution rooms, specifically, the A community power distribution room, the B community power distribution room and the C community power distribution room. There is a distribution transformer 10-4 in the power distribution room of community A, and the distribution transformer 10-4 is connected to the low-voltage main switch 404 of the distribution transformer. The low-voltage outlet switch 441, the low-voltage outlet switch 442 and the low-voltage Outlet switch 443. There is a distribution transformer 10-5 in the power distribution room of residential area B, and the distribution transformer 10-5 is connected to the low-voltage main switch 405 of the distribution transformer. The low-voltage outgoing switch 451, the low-voltage outgoing switch 452 and the low-voltage Outlet switch 453. There is a distribution transformer 10-6 in the power distribution room of Community C. The distribution transformer 10-6 is connected to the low-voltage main switch 406 of the distribution transformer. A low-voltage outlet switch 461, a low-voltage outlet switch 462 and a low-voltage Outlet switch 463.

In this embodiment, firstly, the communication problem can be eliminated according to the communication maintenance plan and the fault information of the communication optical cable; secondly, according to the grid maintenance plan, the power outage caused by the plan can be eliminated; then if the low-voltage outgoing line switch 441, the low-voltage outgoing line switch The off-line signal of switch 443 can determine that the above-mentioned multiple low-voltage outlet switches have tripped, and at the same time, there is no voltage and current in the corresponding station area assessment table, and the voltage, current and active power of the corresponding substation 10KV outlet switch are normal, then it is judged that A is on and off The opening and closing station outlet switch 211 of the station is tripped.

According to the embodiment of the present invention, there is also provided a monitoring device for distribution network, the monitoring device is mainly used to implement the monitoring method provided in the above content of the embodiment of the present invention, the following is the distribution network provided by the embodiment of the present invention The monitoring device of the power grid is introduced in detail:

Fig. 9 is a schematic diagram of a monitoring device for a power distribution network according to an embodiment of the present invention. As shown in Figure 9, the monitoring device mainly includes an establishment unit 100, an acquisition unit 200, a judgment unit 300 and an output unit 400, wherein:

The establishment unit 100 is used to establish a multi-layer topology model of the distribution network, wherein the multi-layer topology model is used to characterize the topology structure among various devices in the distribution network. Specifically, the multi-layer topology model can be three layers, and each layer is a 10KV distribution network, a 10KV transformer station area, low-voltage equipment, and user smart meters.

The collection unit 200 is used for collecting state information of the distribution network from data sources. Specifically, the status information of the distribution network includes concentrator power information, concentrator heartbeat data, optical network unit (Optical Network Unit, ONU for short) data, maintenance plan data, grid topology data, EMS real-time data, etc.

The judging unit 300 is configured to analyze the equipment according to the multi-layer topology model and state information, so as to judge whether there is a faulty equipment in the power distribution network.

The output unit 400 is configured to output a fault result when it is judged that there is a faulty device in the power distribution network, wherein the fault result includes a grid fault and/or a communication fault.

In the embodiment of the present invention, by establishing the topology model of the distribution network, collecting the state information of the distribution network, and then analyzing the equipment in the distribution network according to the above topology model and state information, the equipment in the distribution network is realized. The operating conditions are monitored, so that it is possible to promptly and proactively discover the faulty equipment (that is, the faulty equipment) in the distribution network, and to further determine the type of fault to which the above-mentioned faulty equipment belongs. In related technologies, only the user can rely on Compared with the passive method of reporting for repairs to determine the occurrence of faults, it achieves the purpose of actively discovering the faults in the distribution network in a timely manner without relying on the user's repairs, thereby achieving the technical effect of improving the timeliness of the staff to solve the faults, and then solving the problem. It solves the technical problem that the faults in the distribution network cannot be found in time in the prior art.

In addition, the embodiment of the present invention also achieves the effect of distinguishing the failure of the grid equipment and the failure of the communication equipment.

Optionally, the device in the foregoing embodiment includes a power distribution device and a communication device for transmitting state information of the distribution network.

Optionally, the power grid failure includes any of the following: tripping of the low-voltage outlet switch, tripping of the low-voltage main switch of the distribution transformer, distribution transformer failure, and tripping of the outlet switch of the switching station; communication failure includes any of the following: failure of the optical network unit, optical fiber failure, concentrator failure, and concentrator downlink port failure.

Optionally, the data source includes at least one of the following: user electricity collection system, dispatch EMS system, distribution automation system, OMS system and distribution network communication system.

Optionally, in this embodiment of the present invention, the judgment unit 300 includes an acquisition module, a first judgment module, a first determination module, and a second determination module. Among them, the acquisition module is used to acquire the working status of at least one second device that has the same parent node as the first device in the topology when the abnormal signal of the first device is received; the first judgment module is used to judge Whether the working state of the second device is normal; the first determining module is used to determine that the faulty device is the device corresponding to the parent node when it is judged that the working state of the second device is abnormal; the second determining module is used to judge whether the working state of the second device is abnormal If the working state of the second device is normal, it is determined that the faulty device is the first device.

In the embodiment of the present invention, according to the structural relationship of each device in the topology, when any device generates an abnormal signal, the device in the topology is analyzed by means of vertical tracing, horizontal verification, and layer-by-layer upward derivation. Analyzing other associated devices can accurately determine the faulty device, achieving the effect of improving the accuracy of determining the faulty device.

Optionally, in this embodiment of the present invention, the device includes a concentrator, and the judging unit 300 includes a second judging module. The second judging module is used to analyze the concentrator according to the multi-layer topology model and status information, so as to judge whether the concentrator is a faulty device or whether the non-concentrator is a faulty device in the distribution network.

Optionally, in this embodiment of the present invention, the device includes an optical network unit, where the judging unit 300 includes a third judging module. The third judging module is used to analyze the optical network unit according to the multi-layer topology model and state information, so as to judge whether the optical network unit in the distribution network is a faulty device or whether the equipment other than the optical network unit is a faulty device.

The serial numbers of the above embodiments of the present invention are for description only, and do not represent the advantages and disadvantages of the embodiments.

In the above-mentioned embodiments of the present invention, the descriptions of each embodiment have their own emphases, and for parts not described in detail in a certain embodiment, reference may be made to relevant descriptions of other embodiments.

In the several embodiments provided in this application, it should be understood that the disclosed technical content can be realized in other ways. Wherein, the device embodiments described above are only illustrative. For example, the division of the units may be a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components may be combined or may be Integrate into another system, or some features may be ignored, or not implemented. In another point, the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of units or modules may be in electrical or other forms.

The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple units. Part or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, each unit may exist separately physically, or two or more units may be integrated into one unit. The above-mentioned integrated units can be implemented in the form of hardware or in the form of software functional units.

If the integrated unit is realized in the form of a software function unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the essence of the technical solution of the present invention or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium , including several instructions to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods described in various embodiments of the present invention. The aforementioned storage media include: U disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), mobile hard disk, magnetic disk or optical disk and other media that can store program codes. .

The above is only a preferred embodiment of the present invention, and it should be pointed out that for those of ordinary skill in the art, some improvements and modifications can be made without departing from the principle of the present invention. It should be regarded as the protection scope of the present invention.

Claims (24)

1. A kind of 1. monitoring method for power distribution network, it is characterised in that including：

   The multilayer topological model of power distribution network is established, wherein, the multilayer topological model is used to characterize each in the power distribution network set Topological structure between standby；

   The status information of the power distribution network is gathered from data source；

   The equipment is analyzed according to the multilayer topological model and the status information, to judge to be in the power distribution network It is no faulty equipment to be present；

   If judging the faulty equipment in the power distribution network be present, fail result is exported, wherein, the fail result includes Electric network fault and/or communication failure,

   Wherein, the equipment is analyzed according to the multilayer topological model and the status information, to judge the distribution Include in net with the presence or absence of faulty equipment：

   In the case where receiving the abnormal signal of the first equipment, obtain and at least one in the topological structure set with described first The working condition of standby the second equipment with identical father node；

   Judge whether the working condition of second equipment is normal；

   In the case where the working condition for judging second equipment is exception, it is the father node to determine the faulty equipment Corresponding equipment；

   In the case of the working condition for judging second equipment is normal, determine that the faulty equipment sets for described first It is standby.
2. 2. according to the method for claim 1, it is characterised in that the equipment includes controller switching equipment and for transmitting described match somebody with somebody The communication equipment of the status information of power network.
3. 3. according to the method for claim 1, it is characterised in that the electric network fault include it is following any one：Low pressure goes out Wiretap tripping operation, the tripping operation of distribution low-voltage main switch, distribution transformer failure and the tripping operation of Switching Station outlet switch；The communication failure Including it is following any one：Optical network unit failure, fiber failure, concentrator failure and concentrator second line of a couplet port failure.
4. 4. according to the method for claim 1, it is characterised in that the data source includes at least one of：User power utilization Acquisition system, scheduling EMS system, electrical power distribution automatization system, OMS and distribution network communication system.
5. 5. according to the method for claim 1, it is characterised in that the equipment includes concentrator, according to more etale topologies Model and the status information are analyzed the equipment, to judge with the presence or absence of faulty equipment to include in the power distribution network：

   The concentrator is analyzed according to the multilayer topological model and the status information, to judge in the power distribution network Whether the concentrator is whether the equipment of the faulty equipment or the non-concentrator is the faulty equipment.
6. 6. according to the method for claim 5, it is characterised in that according to the multilayer topological model and the status information pair The concentrator is analyzed, to judge whether concentrator described in the power distribution network is the faulty equipment or the non-concentration Whether the equipment of device is that the faulty equipment includes：

   Signal and the first optical-fiber network list corresponding to first concentrator is not received receiving going offline for the first concentrator In the case of the signal that goes offline of member, the working condition of the second concentrator is obtained, wherein, second concentrator and first collection Middle device is switched by the first low-pressure line-outgoing and powered；

   Judge whether the working condition of second concentrator is normal；

   In the case of the working condition for judging second concentrator is normal, determine the faulty equipment for the described first collection Middle device；

   In the case where judging the working condition exception of second concentrator, determine that the faulty equipment is low for described first Extrude wiretap.
7. 7. according to the method for claim 5, it is characterised in that according to the multilayer topological model and the status information pair The concentrator is analyzed, to judge whether concentrator described in the power distribution network is the faulty equipment or the non-concentration Whether the equipment of device is that the faulty equipment includes：

   Signal and the second optical-fiber network list corresponding to the 3rd concentrator is not received receiving going offline for the 3rd concentrator In the case of the signal that goes offline of member, the meter voltage of first object user is obtained, wherein, the meter electricity of the first object user Pressure is gathered by the 4th concentrator, and the meter voltage of the second targeted customer is gathered by the 3rd concentrator, the 3rd collection Middle device, the first object user and second targeted customer switch by the second low-pressure line-outgoing and powered；

   Judge whether the meter voltage of the first object user is normal；

   In the case of the meter voltage for judging the first object user is normal, it is the described 3rd to determine the faulty equipment Concentrator.
8. 8. according to the method for claim 7, it is characterised in that judging the meter voltage of the first object user Whether it is normal after, the concentrator is analyzed according to the multilayer topological model and the status information, to judge State whether concentrator described in power distribution network is whether the equipment of the faulty equipment or the non-concentrator is the faulty equipment Also include：

   In the case where judging the meter electric voltage exception of the first object user, then the 3rd target for obtaining predetermined number is used The meter voltage at family, wherein, the meter voltage of the 3rd targeted customer is gathered by the 4th concentrator, the 3rd mesh Mark user and power supply is switched by second low-pressure line-outgoing, the predetermined number is more than or equal to one；

   Judge whether the meter voltage of the 3rd targeted customer is normal；

   In the case of the meter voltage for judging the 3rd targeted customer is normal, it is the described 3rd to determine the faulty equipment Concentrator；

   In the case where judging the meter electric voltage exception of the 3rd targeted customer, it is described second to determine the faulty equipment Low-pressure line-outgoing switchs.
9. 9. according to the method for claim 5, it is characterised in that according to the multilayer topological model and the status information pair The concentrator is analyzed, to judge whether concentrator described in the power distribution network is the faulty equipment or the non-concentration Whether the equipment of device is that the faulty equipment includes：

   Signal and the 3rd optical-fiber network list corresponding to the 5th concentrator is not received receiving going offline for the 5th concentrator In the case of the signal that goes offline of member, message is reported in the power failure for judging whether to receive the 4th targeted customer in the first preset time for repairment, Wherein, the 4th targeted customer and the 5th concentrator switch by the 3rd low-pressure line-outgoing powers；

   Judging that the power failure that the 4th targeted customer is received in first preset time reports the situation of message for repairment Under, determine that the faulty equipment switchs for the 3rd low-pressure line-outgoing；

   Judging that the power failure for not receiving the 4th targeted customer in first preset time reports the feelings of message for repairment Under condition, determine the faulty equipment for the 3rd low-pressure line-outgoing switch or the 5th concentrator.
10. 10. according to the method for claim 9, it is characterised in that it is determined that the faulty equipment goes out for the 3rd low pressure After wiretap or the 5th concentrator, the concentrator is entered according to the multilayer topological model and the status information Row analysis, with judge concentrator described in the power distribution network whether be the faulty equipment or the non-concentrator equipment whether Also include for the faulty equipment：

    Message is reported in the power failure for judging whether to receive the 4th targeted customer in the second preset time for repairment, wherein, it is described The initial time of second preset time is the end time of first preset time；

    Judging that the power failure that the 4th targeted customer is received in second preset time reports the situation of message for repairment Under, determine that the faulty equipment switchs for the 3rd low-pressure line-outgoing.
11. 11. according to the method for claim 1, it is characterised in that the equipment includes optical network unit, according to the multilayer Topological model and the status information are analyzed the equipment, to judge to whether there is faulty equipment bag in the power distribution network Include：

    The optical network unit is analyzed according to the multilayer topological model and the status information, to judge the distribution Whether optical network unit described in net is whether the equipment of the faulty equipment or the non-optical network unit is that the failure is set It is standby.
12. 12. according to the method for claim 11, it is characterised in that according to the multilayer topological model and the status information The optical network unit is analyzed, with judge optical network unit described in the power distribution network whether be the faulty equipment or Whether the equipment of the non-optical network unit is that the faulty equipment includes：

    Receive the signal that goes offline of the 4th optical network unit；

    Obtain the state of corresponding with target distribution transformer 10KV service entrance switch, wherein, the target distribution transformer for Distribution transformer corresponding to 4th optical network unit；

    According to the state of the 10KV service entrance switch, judge whether the faulty equipment is the 4th optical network unit.
13. 13. according to the method for claim 12, it is characterised in that according to the state of the 10KV service entrance switch, judge institute State whether faulty equipment is that the 4th optical network unit includes：

    If the 10KV service entrance switch meets preparatory condition, it is determined that the faulty equipment is the 4th optical network unit, its In, the preparatory condition is closure, electric current be present and have work value.
14. 14. according to the method for claim 11, it is characterised in that according to the multilayer topological model and the status information The optical network unit is analyzed, with judge optical network unit described in the power distribution network whether be the faulty equipment or Whether the equipment of the non-optical network unit is that the faulty equipment includes：

    In the case where receiving the signal that goes offline of the 5th optical network unit, communication repair schedule and communications optical cable failure letter are obtained Breath, wherein, the 5th optical network unit is the optical network unit for having with the 6th concentrator incidence relation；

    Judge that whether existing the 5th optical network unit is logical according to the communication repair schedule and communications optical cable fault message Believe failure；

    Judging that institute is not present in the 5th optical network unit according to the communication repair schedule and communications optical cable fault message In the case of stating communication failure, the meter voltage of the 5th targeted customer is obtained, wherein, the meter voltage of the 5th targeted customer Gathered by the 7th concentrator, the 6th concentrator user gathers the meter voltage of the 6th targeted customer, the 5th mesh Mark user and the 6th targeted customer power by the first distribution low-voltage main switch；

    Judge whether the meter voltage of the 5th targeted customer is normal；

    In the case of the meter voltage for judging the 5th targeted customer is normal, it is the described 5th to determine the faulty equipment Optical network unit；

    In the case where judging the meter electric voltage exception of the 5th targeted customer, it is described first to determine the faulty equipment Distribution low-voltage main switch.
15. 15. according to the method for claim 11, it is characterised in that according to the multilayer topological model and the status information The optical network unit is analyzed, with judge optical network unit described in the power distribution network whether be the faulty equipment or Whether the equipment of the non-optical network unit is that the faulty equipment includes：

    In the case where receiving the signal that goes offline of the 6th optical network unit, communication repair schedule and communications optical cable failure letter are obtained Breath；

    Judge that whether existing the 6th optical network unit is logical according to the communication repair schedule and communications optical cable fault message Believe failure；

    Judging that institute is not present in the 6th optical network unit according to the communication repair schedule and communications optical cable fault message In the case of stating communication failure, message is reported in the power failure for judging whether to receive the 7th targeted customer in the 3rd preset time for repairment, its In, the 7th targeted customer powers with the 6th optical network unit by the second distribution low-voltage main switch；

    Judging that the power failure that the 7th targeted customer is received in the 3rd preset time reports the situation of message for repairment Under, it is the second distribution low-voltage main switch to determine the faulty equipment；

    Judging that the power failure for not receiving the 7th targeted customer in the 3rd preset time reports the feelings of message for repairment Under condition, it is the second distribution low-voltage main switch or the 6th optical network unit to determine the faulty equipment.
16. 16. according to the method for claim 15, it is characterised in that it is determined that the faulty equipment matches somebody with somebody step-down for described second After pressing main switch or the 6th optical network unit, wherein, according to the multilayer topological model and the status information pair The optical network unit is analyzed, to judge whether optical network unit described in the power distribution network is the faulty equipment or non- Whether the equipment of the optical network unit is that the faulty equipment also includes：

    Message is reported in the power failure for judging whether to receive the 7th targeted customer in the 4th preset time for repairment, wherein, it is described The initial time of 4th preset time is the end time of the 3rd preset time；

    In the case where judging that the power failure is received in the 4th preset time reports message for repairment, the faulty equipment is determined For the second distribution low-voltage main switch.
17. 17. according to the method for claim 11, it is characterised in that the equipment also includes accessory power supply, the auxiliary electricity Source is used to, in the main power source power-off of the 7th optical network unit, supply to the 7th optical network unit in the first preset time period Electricity, wherein, the optical network unit is analyzed according to the multilayer topological model and the status information, with described in judgement Optical network unit described in power distribution network whether be the faulty equipment or the non-optical network unit equipment whether be it is described therefore Barrier equipment includes：

    In the case where receiving the signal that goes offline of the 7th optical network unit, judgement is received before the signal that goes offline Whether the network interface lossing signal of seventh optical network unit is received in first preset time period, wherein, the network interface Lossing signal is corresponding with the distribution transformer powered to the 7th optical network unit；

    In the case where judging to receive the network interface lossing signal, it is to the 7th optical-fiber network to determine the faulty equipment The distribution transformer of unit power supply；

    In the case where judging not receive the network interface lossing signal, it is the 7th optical-fiber network to determine the faulty equipment Unit.
18. 18. according to the method for claim 11, it is characterised in that the equipment also includes accessory power supply, the auxiliary electricity Source is used to, in the main power source power-off of the 8th optical network unit, supply to the 8th optical network unit in the second preset time period Electricity, wherein, the optical network unit is analyzed according to the multilayer topological model and the status information, with described in judgement Optical network unit described in power distribution network whether be the faulty equipment or the non-optical network unit equipment whether be it is described therefore Barrier equipment includes：

    In the case where receiving the network interface lossing signal of the 8th optical network unit, judge receiving the network interface loss In second preset time period after signal, if receive the signal that goes offline of the 8th optical network unit；

    In the case where judging to receive the signal that goes offline, it is to the 8th optical network unit to determine the faulty equipment The distribution transformer of power supply；

    In the case where judging not receive the signal that goes offline, determine that the faulty equipment is and the network interface lossing signal Corresponding distribution transformer.
19. A kind of 19. supervising device for power distribution network, it is characterised in that including：

    Unit is established, for establishing the multilayer topological model of power distribution network, wherein, the multilayer topological model is used to characterize described match somebody with somebody Topological structure in power network between each equipment；

    Collecting unit, for gathering the status information of the power distribution network from data source；

    Judging unit, for being analyzed according to the multilayer topological model and status information the equipment, with described in judgement It whether there is faulty equipment in power distribution network；

    Output unit, in the case where the faulty equipment be present in judging the power distribution network, exporting fail result, its In, the fail result includes electric network fault and/or communication failure,

    Wherein, the judging unit includes：

    Acquisition module, in the case where receiving the abnormal signal of the first equipment, obtaining at least one in the topological structure Individual and first equipment has the working condition of the second equipment of identical father node；

    First judge module, for judging whether the working condition of second equipment is normal；

    First determining module, in the case of being exception in the working condition for judging second equipment, determine the event Barrier equipment is equipment corresponding to the father node；

    Second determining module, in the case of being normal in the working condition for judging second equipment, determine the event Barrier equipment is first equipment.
20. 20. device according to claim 19, it is characterised in that the equipment is described including controller switching equipment and for transmitting The communication equipment of the status information of power distribution network.
21. 21. device according to claim 19, it is characterised in that the electric network fault include it is following any one：Low pressure Outlet switch tripping operation, the tripping operation of distribution low-voltage main switch, distribution transformer failure and the tripping operation of Switching Station outlet switch；The communication event Barrier include it is following any one：Optical network unit failure, fiber failure, concentrator failure and concentrator second line of a couplet port failure.
22. 22. device according to claim 19, it is characterised in that the data source includes at least one of：User uses Electric acquisition system, scheduling EMS system, electrical power distribution automatization system, OMS and distribution network communication system.
23. 23. device according to claim 19, it is characterised in that the equipment includes concentrator, wherein, it is described to judge list Member includes：

    Second judge module, for being analyzed according to the multilayer topological model and the status information the concentrator, To judge whether concentrator described in the power distribution network is whether the equipment of the faulty equipment or the non-concentrator is described Faulty equipment.
24. 24. device according to claim 19, it is characterised in that the equipment includes optical network unit, wherein, it is described to sentence Disconnected unit includes：

    3rd judge module, for being analyzed according to the multilayer topological model and status information the optical network unit, To judge whether optical network unit described in the power distribution network is that the equipment of the faulty equipment or the non-optical network unit is No is the faulty equipment.