CN111174738B - Distance determination method, device, storage medium, processor and power distribution system - Google Patents

Abstract

The invention discloses a distance determination method, a distance determination device, a storage medium, a processor and a power distribution system. Wherein, the method comprises the following steps: receiving at the second node a mechanical wave from the first node, wherein the mechanical wave is emitted by the first node; calculating the propagation time from the sending of the mechanical wave from the first node to the receiving of the mechanical wave by the second node; the distance between the first node and the second node is calculated from the propagation time and the propagation velocity of the mechanical wave. The invention solves the technical problem that the node distance in the power distribution network cannot be identified.

Description

Distance determination method, apparatus, storage medium, processor, and power distribution system

technical field

The present invention relates to the field of electric power, and in particular, to a distance determination method, device, storage medium, processor, and power distribution system.

Background technique

Topology identification of distribution station area is the key basic technology to support the intelligentization of low-voltage distribution network.

Through the signal injection method, although the household-change relationship and branch relationship can be identified, the topological distance can be identified; the identification speed is slow, the accuracy is poor, and the topological distance cannot be identified through the electrical quantity data analysis; the power line carrier communication identification method exists to identify the branch relationship. Difficulty, unable to identify the distance problem.

For the above problem of inability to identify the node distance in the distribution network, no effective solution has been proposed yet.

SUMMARY OF THE INVENTION

Embodiments of the present invention provide a distance determination method, device, storage medium, processor, and power distribution system, so as to at least solve the technical problem that the distance between nodes in a power distribution network cannot be identified.

According to an aspect of the embodiments of the present invention, a method for determining a distance is provided, comprising: receiving a mechanical wave from a first node at a second node, wherein the mechanical wave is emitted by the first node; calculating the mechanical wave from the first node; The propagation time from when a node sends out a mechanical wave to when the second node receives the mechanical wave; calculates the distance between the first node and the second node according to the propagation time and the propagation speed of the mechanical wave.

Further, the method further includes: obtaining the distances between all nodes of the power distribution network, wherein the distances between the nodes are calculated according to the propagation time of mechanical waves; obtaining the distances between all the nodes according to the distances between the nodes. Describe the topology of the distribution network.

Further, the node includes: a switching device.

Further, the mechanical wave is received and/or transmitted by the mechanical wave receiving and transmitting device provided by the first node and the second node.

According to another aspect of the embodiments of the present invention, there is also provided a distance determination device, comprising: a receiving unit configured to receive a mechanical wave from a first node at a second node, wherein the mechanical wave is emitted by the first node ; a first calculation unit, used to calculate the propagation time of the mechanical wave from the first node to the second node to receive the mechanical wave; the second calculation unit, used to calculate the propagation time according to the propagation time and the mechanical wave The propagation velocity calculates the distance between the first node and the second node.

Further, the device further includes: an obtaining unit, used for obtaining the distances between all nodes of the power distribution network, wherein the distances between the nodes are all calculated according to the propagation time of mechanical waves; a determining unit, used for obtaining according to The distance between all the nodes obtains the topological relationship of the power distribution network.

Further, the node includes: a switching device.

According to another aspect of the embodiments of the present invention, there is also provided a power distribution system, comprising: nodes; a mechanical wave receiving and transmitting device installed on each node for receiving and/or transmitting mechanical waves; The mechanical wave receiving and sending devices are connected to obtain the propagation time of the mechanical wave between the two nodes, and calculate the distance between the two nodes according to the propagation time and the propagation speed of the mechanical wave.

According to another aspect of the embodiments of the present invention, a storage medium is further provided, the storage medium includes a stored program, wherein when the program runs, the device where the storage medium is located is controlled to execute the above-mentioned distance determination method .

According to yet another aspect of the embodiments of the present invention, a processor is further provided, and the processor is configured to run a program, wherein the above-mentioned distance determination method is executed when the program runs.

In the embodiment of the present invention, the mechanical wave from the first node is received at the second node, the propagation time of the mechanical wave propagating between the first node and the second node is determined, and then according to the propagation time and the propagation speed of the mechanical wave, the calculation The distance between the first node and the second node achieves the purpose of determining the distance between the first node and the second node, realizes the technical effect of identifying the node distance in the power distribution network, and solves the problem that the power distribution network cannot be identified. Technical issues of mid-node distance.

Description of drawings

The accompanying drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the attached image:

1 is a flowchart of a distance determination method according to an embodiment of the present invention;

2 is a schematic diagram of a mechanical wave topology identification module according to an embodiment of the present invention;

3 is a schematic diagram of a distance determination device according to an embodiment of the present invention;

FIG. 4 is a schematic diagram of a power distribution system according to an embodiment of the present invention.

Detailed ways

In order to make those skilled in the art better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only Embodiments are 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 creative efforts shall fall within the protection scope of the present invention.

It should be noted that the terms "first", "second" and the like in the description and claims of the present invention and the above drawings are used to distinguish similar objects, and are not necessarily used to describe a specific sequence or sequence. It is to be understood that the data so used may be interchanged 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" and any variations thereof, are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those expressly listed Rather, those steps or units may include other steps or units not expressly listed or inherent to these processes, methods, products or devices.

According to an embodiment of the present invention, an embodiment of a distance determination method is provided. It should be noted that the steps shown in the flowchart of the accompanying drawings may be executed in a computer system such as a set of computer-executable instructions, and, although in A logical order is shown in the flowcharts, but in some cases steps shown or described may be performed in an order different from that herein.

Fig. 1 is a flowchart of a method for determining a distance according to an embodiment of the present invention. As shown in Fig. 1 , the method includes the following steps:

Step S102, receiving the mechanical wave from the first node at the second node, wherein the mechanical wave is sent by the first node;

Step S104, calculating the propagation time from the mechanical wave sent by the first node to the mechanical wave received by the second node;

Step S106, calculating the distance between the first node and the second node according to the propagation time and the propagation speed of the mechanical wave.

In the embodiment of the present invention, the mechanical wave from the first node is received at the second node, the propagation time of the mechanical wave propagating between the first node and the second node is determined, and then according to the propagation time and the propagation speed of the mechanical wave, the calculation The distance between the first node and the second node achieves the purpose of determining the distance between the first node and the second node, realizes the technical effect of identifying the node distance in the power distribution network, and solves the problem that the power distribution network cannot be identified. Technical issues of mid-node distance.

It should be noted that the distance determination method provided by the present invention can be applied in a power distribution network to determine the distance between nodes in the power distribution network.

Optionally, the nodes in the power distribution network may include a first node and a second node.

Optionally, the node of the node in the power distribution network may be the location of important equipment in the power distribution network, such as a switch, a power distribution box, a transformer, and the like.

As an optional embodiment, the node includes: a switch device, wherein the node includes a first node and a second node.

Optionally, the node is a switchgear in the power distribution network.

Optionally, there may be multiple second nodes, which are adjacent to the first node in the power distribution network.

Optionally, the mechanical wave receiving and transmitting devices may be installed at both ends of the same node, respectively.

For example, in the case where the first node and the second node are switch devices, mechanical wave receiving and transmitting devices may be installed on the upper switch port and the lower port of the switch device respectively.

It should be noted that the mechanical wave receiving and transmitting device is used for receiving and/or transmitting mechanical waves.

Optionally, each mechanical wave receiving and transmitting device may both have the function of receiving and transmitting mechanical waves; or may only have one function of receiving or transmitting mechanical waves.

Optionally, the mechanical wave receiving and sending device for sending mechanical waves may be set at the first node, and the mechanical wave receiving and sending device for receiving mechanical waves may be set at the second node.

For example, the mechanical wave receiving and sending device set at the lower port of the switch corresponding to the first node can only transmit machinery; the mechanical wave receiving and sending device set at the upper switch port of the second node corresponding to the switch device can only receive machinery.

In the solution provided in step S102, the mechanical wave refers to the propagation of mechanical vibration in a medium, is generated by mechanical vibration, and has different propagation speeds in different media.

It should be noted that the propagation speed of mechanical waves is determined by the medium, and the propagation speed in the same medium is fixed.

Optionally, those skilled in the art can obtain the propagation speeds of mechanical waves in different media by querying.

Optionally, the first node and the second node may be connected by a wire, and the mechanical wave may propagate on the wire between the first node and the second node.

Optionally, the propagation speed of the mechanical wave can be determined by the material of the wire.

It should be noted that the wire is generally made of copper or aluminum, and is also made of silver wire.

Optionally, according to the material of the wire, the propagation speed of the mechanical wave in the wire of the material can be queried; the wire can also be tested in advance to detect the propagation speed of the mechanical wave in the wire.

In the solution provided in step S104, the intelligent power distribution terminal can be connected to the first node and the second node respectively, and after the first node sends out the mechanical wave, the sending time of the mechanical wave can be uploaded to the intelligent power distribution terminal; and in the second node After the node receives the mechanical wave, it can upload the receiving time of the mechanical wave to the intelligent power distribution terminal, and the intelligent power distribution terminal can determine the propagation time of the mechanical wave from the first node to the second node according to the sending time and receiving time of the mechanical wave.

Optionally, the intelligent power distribution terminal can be connected with mechanical wave receiving and transmitting devices installed on different nodes. For example, the terminal may be connected to mechanical wave receiving and transmitting devices installed on the first node and the second node, respectively.

In the solution provided in step S106, the distance between the first node and the second node may be determined according to the product between the propagation time and the propagation speed of the mechanical wave.

Optionally, according to the manner of determining the distance between the first node and the second node, the distance between all nodes in the power distribution network may be determined.

As an optional embodiment, the method further includes: obtaining the distances between all nodes of the power distribution network, wherein the distances between the nodes are all calculated according to the propagation time of mechanical waves; The topology of the electrical network.

In this embodiment of the present invention, by obtaining the distances between all nodes of the power distribution network, the topology relationship of the power distribution network can be determined according to the distances between the nodes.

Optionally, it may be determined that a plurality of nodes with the same or similar distances are at the same level in the topological relationship.

For example, identify switchgear within the same branch box.

Optionally, other nodes directly connected to a certain node may be determined according to the propagation path of the mechanical wave.

For example, if the first node is the first device, and the second node is the second device directly connected to the first device through a wire, the second device can receive the mechanical waves sent by the first device, and calculate the relationship between the first device and the first device. The distance between the second devices can determine the second device connected to the first device in the power distribution network, and then the second device is used as the first node, and the third device connected to the second device through wires can be further determined. The topological relationship of each device in the power distribution network can be determined.

It should be noted that, in the above example, the devices in the power distribution network may be switch devices, that is, the first device is the first switch device, the second device is the second switch device, and the third device is the first switch device Three switchgear.

As an optional embodiment, the mechanical wave is received and/or transmitted through the mechanical wave receiving and sending apparatuses provided by the first node and the second node.

The present invention also provides a preferred embodiment, which provides a mechanical wave topology identification module and an identification method thereof.

The invention realizes the measurement of the distance between each node by installing mechanical wave transceiver devices at the important nodes of the switch and the line, and further completes the topology identification of the low-voltage power distribution network through algorithm analysis.

FIG. 2 is a schematic diagram of a mechanical wave topology identification module according to an embodiment of the present invention. As shown in FIG. 2 , a mechanical wave transceiver device is installed on the switch upper port and the switch lower port of each switch device, and each mechanical wave transceiver device is connected to the switch device. The intelligent power distribution terminal is connected, and the intelligent power distribution terminal calculates the distance information between the two switchgears by multiplying the propagation speed of the mechanical wave in the wires in the connected switchgear by the propagation time.

Optionally, after the intelligent configuration terminal becomes the information, the branch relationship of the switch devices can be further sorted out according to the distance information between the switch devices.

Optionally, sorting out the branch relationship of the switchgear includes: starting from the switchgear of each outlet of the transformer, determining that the switchgear with substantially the same distance is located in the same branch box, so as to find the switch branch box and its switches carried by different outgoing switchgear. equipment, and use this method to further sort out the lower-level switchgear.

The technical scheme provided by the present invention can be applied in a low-voltage power distribution network to realize low-voltage topology identification and key node distance measurement.

The technical solution provided by the present invention can be applied in a low-voltage power distribution environment, and can also be used for reference in a high-voltage power distribution environment.

According to yet another embodiment of the present invention, a storage medium is also provided, the storage medium includes a stored program, wherein when the program runs, any one of the above-mentioned distance determination methods is executed.

According to yet another embodiment of the present invention, a processor is also provided, and the processor is configured to run a program, wherein when the program runs, any one of the above-mentioned distance determination methods is executed.

According to an embodiment of the present invention, an embodiment of a distance determination apparatus is also provided. It should be noted that the distance determination apparatus may be used to execute the distance determination method in the embodiment of the present invention, and the distance determination method in the embodiment of the present invention may be Executed in the distance determination device.

FIG. 3 is a schematic diagram of a distance determination apparatus according to an embodiment of the present invention. As shown in FIG. 3 , the apparatus may include:

The receiving unit 32 is used to receive the mechanical wave from the first node at the second node, wherein the mechanical wave is sent by the first node; the first computing unit 34 is used to calculate the mechanical wave sent from the first node to the mechanical wave received by the second node. The second calculation unit 36 is configured to calculate the distance between the first node and the second node according to the propagation time and the propagation speed of the mechanical wave.

It should be noted that the receiving unit 32 in this embodiment may be used to perform step S102 in this embodiment of the present application, and the receiving unit 32 in this embodiment may be used to perform step S104 in this embodiment of the present application. The second computing unit 36 in can be configured to perform step S106 in the embodiment of the present application. Examples and application scenarios implemented by the foregoing modules and corresponding steps are the same, but are not limited to the contents disclosed in the foregoing embodiments.

In the embodiment of the present invention, the mechanical wave from the first node is received at the second node, the propagation time of the mechanical wave propagating between the first node and the second node is determined, and then according to the propagation time and the propagation speed of the mechanical wave, the calculation The distance between the first node and the second node achieves the purpose of determining the distance between the first node and the second node, realizes the technical effect of identifying the node distance in the power distribution network, and solves the problem that the power distribution network cannot be identified. Technical issues of mid-node distance.

As an optional embodiment, the device further includes: an acquiring unit, configured to acquire the distances between all nodes of the power distribution network, wherein the distances between the nodes are all calculated according to the propagation time of mechanical waves; the determining unit, It is used to obtain the topological relationship of the power distribution network according to the distance between all nodes.

As an optional embodiment, the node includes: a switch device.

As an optional embodiment, the mechanical wave is received and/or transmitted through the mechanical wave receiving and sending apparatuses provided by the first node and the second node.

Fig. 4 is a schematic diagram of a power distribution system according to an embodiment of the present invention. As shown in Fig. 4, the system may include: a node 41; a mechanical wave receiving and transmitting device 43 installed on each node for receiving and/or receiving Or send a mechanical wave; the terminal 45 is connected to the mechanical wave receiving and sending device, used to obtain the propagation time of the mechanical wave between two nodes, and calculate the distance between the two nodes according to the propagation time and the propagation speed of the mechanical wave.

In the embodiment of the present invention, a mechanical wave receiving and sending device is installed on each node, so that the mechanical wave can propagate between the nodes, and the propagation time of the mechanical wave between the two nodes can be obtained, and then the propagation time and the propagation speed of the mechanical wave can be obtained according to the propagation speed of the mechanical wave. , the propagation distance between nodes can be calculated, the purpose of determining the distance between nodes is achieved, the technical effect of identifying the node distance in the distribution network is realized, and the technical problem of unable to identify the node distance in the distribution network is solved.

Optionally, the node can be a switch device, and the mechanical wave receiving and sending devices can be installed at both ends of the same node. For example, the mechanical wave receiving and sending devices can be installed on the upper and lower ports of the switch device (or node), respectively. .

Optionally, the terminal may be an intelligent power distribution terminal or other terminal type equipment.

Optionally, the terminal may be connected to mechanical wave receiving and transmitting devices installed on different nodes. For example, the terminal may be connected to mechanical wave receiving and transmitting devices installed on the first node and the second node, respectively.

In the above-mentioned embodiment of the present invention, the node includes a first node and a second node, and the mechanical wave receiving and sending devices respectively set on the first node and the second node can enable the mechanical wave to propagate between the first node and the second node, and the terminal It can be connected to the mechanical wave receiving and sending device installed on the first node and the mechanical wave receiving and sending device installed on the second node respectively, and the propagation time of the mechanical wave can be determined between the first node and the second node. The time and the propagation speed of mechanical waves can calculate the distance between the first node and the second node, achieve the purpose of determining the distance between the first node and the second node, and realize the technical effect of identifying the node distance in the power distribution network. , which solves the technical problem that the distance between nodes in the distribution network cannot be identified.

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

In the above-mentioned embodiments of the present invention, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.

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

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

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

The integrated unit, if implemented in the form of a software functional unit and sold or used as an independent product, may be stored in a computer-readable storage medium. Based on such understanding, the technical solution of the present invention is essentially 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 for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes: 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 are only the preferred embodiments of the present invention. It should be pointed out that for those skilled in the art, without departing from the principles of the present invention, several improvements and modifications can be made. It should be regarded as the protection scope of the present invention.

Claims (6)

1. A method of distance determination, comprising:

receiving a mechanical wave from a first node at a second node, wherein the mechanical wave is emitted by the first node, the first node and the second node are connected by a wire, and the mechanical wave propagates on the wire between the first node and the second node;

calculating a propagation time from the emission of a mechanical wave from the first node to the reception of the mechanical wave by the second node;

calculating a distance between the first node and the second node from the propagation time and a propagation velocity of the mechanical wave;

wherein the method further comprises:

acquiring distances among all nodes of a power distribution network, wherein the distances among the nodes are calculated according to the propagation time of mechanical waves;

obtaining the topological relation of the power distribution network according to the distances among all the nodes;

the mechanical wave receiving and transmitting devices are respectively arranged at two ends of the same node;

wherein the node comprises: and the switch upper port and the switch lower port of the switch equipment are respectively provided with a mechanical wave receiving and transmitting device.

2. The method according to claim 1, wherein the mechanical waves are received and/or transmitted by mechanical wave receiving and transmitting means provided in the first node and the second node.

3. A distance determining apparatus, comprising:

the receiving unit is used for receiving a mechanical wave from a first node at a second node, wherein the mechanical wave is emitted by the first node, the first node is connected with the second node through a wire, and the mechanical wave propagates on the wire between the first node and the second node;

a first calculation unit configured to calculate a propagation time from when the first node transmits a mechanical wave to when the second node receives the mechanical wave;

a second calculation unit configured to calculate a distance between the first node and the second node from the propagation time and a propagation velocity of the mechanical wave;

wherein the apparatus further comprises:

the device comprises an acquisition unit, a processing unit and a processing unit, wherein the acquisition unit is used for acquiring the distances among all nodes of the power distribution network, and the distances among the nodes are calculated according to the propagation time of mechanical waves;

the determining unit is used for obtaining the topological relation of the power distribution network according to the distances among all the nodes;

the mechanical wave receiving and transmitting devices are respectively arranged at two ends of the same node;

wherein the node comprises: and the switch upper port and the switch lower port of the switch equipment are respectively provided with a mechanical wave receiving and transmitting device.

4. An electrical distribution system, comprising:

the node comprises a first node and a second node, wherein the first node is connected with the second node through a conducting wire, and mechanical waves propagate on the conducting wire between the first node and the second node;

mechanical wave receiving and transmitting means, mounted on each node, for receiving and/or transmitting mechanical waves;

the terminal is connected with the mechanical wave receiving and sending device and used for acquiring the propagation time of the mechanical wave between two nodes and calculating the distance between the two nodes according to the propagation time and the propagation speed of the mechanical wave;

acquiring distances among all nodes of a power distribution network, wherein the distances among the nodes are calculated according to the propagation time of mechanical waves; obtaining the topological relation of the power distribution network according to the distances among all the nodes;

the mechanical wave receiving and transmitting devices are respectively arranged at two ends of the same node;

the node comprises: and the switch equipment is provided with a mechanical wave receiving and transmitting device at the upper opening and the lower opening of the switch respectively.

5. A storage medium characterized in that the storage medium includes a stored program, wherein the program executes the distance determination method according to claim 1 or 2.

6. A processor for running a program, wherein the program is run to perform the distance determination method of claim 1 or 2.

Images