JP2021083293A - Abnormality detection system, distribution board system, abnormality detection method and program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an abnormality detection system, a distribution board system, an abnormality detection method and a program capable of ensuring circuit operation at the time of wiring abnormality. An abnormality detection system 100 includes a detection unit 712 and a control unit 713. The detection unit 712 detects an abnormality in the wiring C11 included in the plurality of circuits C1. When the detection unit 712 detects the occurrence of an abnormality, the control unit 713 sets a partially cut-off state in which only a part of the circuits C1 among the plurality of circuits C1 is cut off. [Selection diagram] Fig. 1

Description

The present disclosure relates generally to anomaly detection systems, distribution board systems, anomaly detection methods and programs, and more specifically to anomaly detection systems, distribution board systems, anomaly detection methods and programs for detecting wiring anomalies.

Patent Document 1 discloses a distribution board in which a main switch and a plurality of branch switches are housed as internal units inside the cabinet. The main switch and the branch switch have an overcurrent protection function and / or an earth leakage protection function, respectively. According to the overcurrent protection function, when the main switch or the branch switch detects an overcurrent, the contact portion is forcibly opened. Further, according to the earth leakage protection function, when the main switch or the branch switch detects an earth leakage, the contact portion is forcibly opened.

JP-A-2017-107833

However, in the configuration described in Patent Document 1, when the main switch is cut off, all (branch) circuits connected to this distribution board are cut off. Circuits containing necessary equipment such as disaster prevention equipment or medical equipment are also cut off.

The present disclosure has been made in view of the above reasons, and an object of the present invention is to provide an abnormality detection system, a distribution board system, an abnormality detection method, and a program capable of ensuring the operation of a circuit when a wiring abnormality occurs.

The abnormality detection system according to one aspect of the present disclosure includes a detection unit and a control unit. The detection unit detects an abnormality in wiring included in a plurality of circuits. When the detection unit detects the occurrence of the abnormality, the control unit is in a partially cut-off state in which only a part of the plurality of circuits is cut off.

The distribution board system according to one aspect of the present disclosure includes the abnormality detection system and a plurality of branch breakers. The plurality of branch breakers are inserted into the plurality of circuits, respectively, and are controlled by the control unit.

The abnormality detection method according to one aspect of the present disclosure includes a detection process and a blocking process. The detection process is a process for detecting an abnormality in wiring included in a plurality of circuits. The cutoff process is a process of setting a partial cutoff state in which only a part of the plurality of circuits is cut off when the occurrence of the abnormality is detected.

The program according to one aspect of the present disclosure is a program for causing one or more processors to execute the abnormality detection method.

According to the present disclosure, there is an advantage that the operation of the circuit can be ensured when the wiring is abnormal.

FIG. 1 is an explanatory diagram showing a schematic configuration of an abnormality detection system according to the first embodiment and a distribution board system in which the abnormality detection system is used. FIG. 2 is an explanatory view of a state in which the lid and the cover are removed in the same distribution board system as viewed from the front. FIG. 3A is an explanatory diagram of the generation principle of the parallel arc. FIG. 3B is an explanatory diagram of the generation principle of the series arc. FIG. 4A is a waveform diagram showing an example of a waveform of a current flowing through the wiring when a parallel arc is generated. FIG. 4B is a waveform diagram showing an example of the waveform of the current flowing through the wiring when the series arc is generated. FIG. 5 is a flowchart illustrating the operation of the above-mentioned abnormality detection system. 6A to 6C are schematic explanatory views showing a specific operation example of the above-mentioned abnormality detection system. 7A to 7C are schematic explanatory views showing a specific operation example of the abnormality detection system according to the second embodiment.

(Embodiment 1)
(1) Outline An outline of the abnormality detection system 100 according to the present embodiment will be described with reference to FIG.

The abnormality detection system 100 is a system for monitoring the state of the wiring C11 of the power distribution system 101. The distribution system 101 includes the distribution board system 1 and the like, and distributes the electric power supplied from, for example, the system power supply 20 and the like in the distribution board system 1 to a plurality of circuits C1. The wiring C11 is included in the plurality of circuits C1. In other words, each of the plurality of circuits C1 includes the wiring C11.

In this embodiment, the power distribution system 101 includes at least three poles. As an example, in the case of a single-phase three-wire system, the distribution system 101 includes three poles, a first voltage pole (L1 pole), a second voltage pole (L2 pole), and a neutral pole (N pole). Then, the power distribution system 101 supplies power to the load in any one of a plurality of phases including a pair of poles out of the three poles. That is, in the case of a single-phase three-wire system, the L1-N phase, the L2-N phase, and the L1-L2 phase are used as a phase consisting of a pair of poles of the first voltage pole, the second voltage pole, and the neutral pole. There are three phases. The L1-N phase consists of a first voltage pole and an N pole, the L2-N phase consists of a second voltage pole and an N pole, and the L1-L2 phase consists of a first voltage pole and a second voltage pole. The power distribution system 101 supplies power to the load in any one of these plurality of phases.

In the present embodiment, the abnormality detection system 100 is configured to detect an abnormality in the wiring C11 in any one of the plurality of circuits C1 and output according to the detection result. As a result, in the abnormality detection system 100, for example, when an abnormality occurs in the wiring C11, the user can be notified or the circuit C1 can be electrically cut off.

The "wiring abnormality" referred to in the present disclosure means an abnormality that can occur in the wiring C11 included in the plurality of circuits C1, and if the wiring C11 is an abnormality such as insulation deterioration or a half-break, for example, if the wiring C11 is a stranded wire. , Includes a state in which some of the multiple strands constituting the stranded wire are broken. Specifically, the abnormality of the wiring C11 includes that when the wiring C11 is composed of a pair of electric wires (poles), an arc (so-called parallel arc) is generated due to a short circuit between the pair of electric wires. Further, the abnormality of the wiring C11 includes that when the wiring C11 is composed of a pair of electric wires (poles), an arc (so-called series arc) is generated by half-breaking one of the pair of electric wires. In addition, for example, a state in which an overcurrent or a short-circuit current exceeding the rated current is flowing in the wiring C11, or a state in which an electric leakage occurs in the wiring C11 is also included in the abnormality of the wiring C11. In the present embodiment, as an example, it is assumed that the "wiring abnormality" is at least one of a parallel arc (short circuit) and a series arc (half disconnection) in the wiring C11.

In the present embodiment, the abnormality detection system 100 is housed in the distribution board cabinet 10 (see FIG. 2) of the distribution board system 1. That is, the abnormality detection system 100 is included in the distribution board system 1. A main breaker 3 and a plurality of branch breakers 4 are housed in the distribution board cabinet 10. In other words, the distribution board system 1 according to the present embodiment includes an abnormality detection system 100 and a plurality of branch breakers 4. The plurality of branch breakers 4 are inserted into each of the plurality of circuits C1. Further, in the present embodiment, the plurality of branch breakers 4 are controlled by the control unit 713 described later. Further, in this embodiment, the plurality of branch breakers 4 branch at least one of the plurality of phases (in the distribution system 101) into the plurality of circuits C1. As an example, when the power distribution system 101 is a single-phase three-wire system and includes three phases of L1-N phase, L2-N phase and L1-L2 phase, at least one of these phases (for example, L1-N phase) Is branched into a plurality of circuits C1 by a plurality of branch breakers 4.

Here, the abnormality detection system 100 according to the present embodiment includes a detection unit 712 and a control unit 713, as shown in FIG. The detection unit 712 detects an abnormality in the wiring C11 included in the plurality of circuits C1. When the detection unit 712 detects the occurrence of an abnormality, the control unit 713 partially shuts off the state. The partially cut-off state is a state in which only a part of the circuits C1 out of the plurality of circuits C1 is cut off.

The "partially interrupted state" referred to in the present disclosure is a state in which some circuits C1 "only" of the plurality of circuits C1 are interrupted, so that the circuit C1 that is not interrupted is included in the plurality of circuits C1. It is a state that exists. That is, in the partially cut-off state, not all of the plurality of circuits C1 are cut off, but a part of the circuits C1 among the plurality of circuits C1 is cut off, and the remaining circuits C1 are not cut off. Furthermore, when a plurality of circuits C1 are divided into two groups, the circuit C1 included in one group is cut off, and the circuit C1 included in the other group is not cut off, which is partially cut off. It is in a state.

That is, the abnormality detection system 100 according to the present embodiment is in a partially cut-off state in which only a part of the circuits C1 of the plurality of circuits C1 is cut off in addition to the detection unit 712 that detects the abnormality of the wiring C11. A control unit 713 for the purpose is provided. That is, in the abnormality detection system 100, when an abnormality is detected by the detection unit 712, not all of the plurality of circuits C1 are cut off, but a part of the circuits C1 is cut off. can do. Therefore, even when an abnormality occurs in the wiring C11, for example, the circuit C1 including the necessary equipment such as lighting equipment, disaster prevention equipment (including evacuation equipment and guidance equipment) or medical equipment should be continuously energized. Is possible. Therefore, according to the abnormality detection system 100, there is an advantage that the operation of the circuit C1 can be ensured when the wiring C11 is abnormal.

(2) Configuration Hereinafter, the configurations of the abnormality detection system 100 and the distribution board system 1 according to the present embodiment will be described in more detail.

(2.1) Premise The distribution board system 1 including the abnormality detection system 100 is installed and used in a facility 500 such as a dwelling unit of a detached house or an apartment house, for example. The facility 500 in which the distribution board system 1 is installed is not limited to each dwelling unit of a detached house or an apartment house, but is a non-residential facility (for example, a factory, a commercial building, an office building, a hospital, a school, etc.). May be good.

In the following description, unless otherwise specified, the X-axis direction is defined as the left-right direction and the Z-axis direction is defined as the vertical direction in FIG. Further, the directions orthogonal to the X-axis direction and the Z-axis direction are defined as the front-rear direction. Further, the positive direction in the X-axis direction is defined as the right side, and the positive direction in the Z-axis direction is defined as the upper side. However, these directions are examples, and are not intended to limit the directions when the distribution board cabinet 10 and the distribution board system 1 are used. In addition, the arrows indicating each direction in the drawing are shown only for the sake of explanation, and are not accompanied by an entity.

The "circuit" referred to in the present disclosure is a circuit including the wiring C11 to be detected by the detection unit 712, and includes, for example, a plurality of branch breakers 4 installed inside the distribution board system 1. obtain. Further, the circuit C1 may include an outlet 22 or an electric device 24 electrically connected to the secondary side of the branch breaker 4, or an electric device 23 electrically connected directly to the secondary side of the branch breaker 4. .. Hereinafter, a device having a function of breaking the circuit (circuit C1), such as the branch breaker 4, is also referred to as a “switch 2”.

For example, when the distribution board cabinet 10 (see FIG. 2) of the distribution board system 1 includes the main breaker 3 and a plurality of branch breakers 4, the main breaker 3 is connected to the secondary terminal. The electric power of the main line is distributed to a plurality of branch circuits by the distribution board system 1. The "branch circuit" referred to in the present disclosure means an individual circuit C1 that is electrically connected to the main line and is branched into a plurality of parts from the main line by the distribution board system 1. Such a branch circuit includes a branch breaker 4, wiring C11, wiring equipment (switch device or outlet (outlet), etc.) and electrical equipment 23, 24. The circuit C1 may be a trunk line connected to a secondary terminal of the main circuit breaker 3, or may be each of a plurality of branch circuits. In this embodiment, as an example, a case where each of the plurality of branch circuits is a circuit C1 will be described.

Further, "cutting off" of the circuit C1 or the like referred to in the present disclosure means electrically cutting off, that is, stopping the supply of electric power. For example, the state in which a part of the circuit C1 is cut off means a state in which the supply of electric power to the part of the circuit C1 is stopped. On the contrary, the state in which the circuit C1 is not interrupted means that the circuit C1 is in the energized state. The shutoff is performed by a switch 2 such as a branch breaker 4. That is, if the circuit C1 is connected to a power source such as the system power supply 20 via the switch 2, it is not cut off when the switch 2 is on (conducting), and the switch 2 is off (non-conducting). Sometimes it will be blocked.

Further, the term "partially cut off" as used in the present disclosure means changing the state of the plurality of circuits C1 from a state in which the circuit C1 is not partially cut off to a state in which the circuit C1 is partially cut off. That is, the partially cut-off state is a state in which only a part of the circuits C1 of the plurality of circuits C1 is cut off. Therefore, for example, from the state where all of the plurality of circuits C1 are energized, the plurality of circuits C1 Blocking only a part of the circuit C1 corresponds to "partially cut off". Further, for example, energizing only a part of the circuits C1 among the plurality of circuits C1 from the state where all of the plurality of circuits C1 are cut off also corresponds to the "partially cut off state".

(2.2) Overall Configuration Next, the configurations of the abnormality detection system 100 and the distribution board system 1 according to the present embodiment will be described with reference to FIGS. 1 and 2.

As described above, the distribution board system 1 according to the present embodiment includes an abnormality detection system 100 and a plurality of branch breakers 4. In the present embodiment, the distribution board system 1 further includes a distribution board cabinet 10 for accommodating a plurality of branch breakers 4 and the like. In the present embodiment, the abnormality detection system 100 mainly includes a monitoring unit 7 housed in the distribution board cabinet 10.

As shown in FIG. 2, the distribution board cabinet 10 includes a main circuit breaker 3, a plurality of branch breakers 4, a seismic circuit breaker 5, an interconnection breaker 6, a monitoring unit 7, a current measuring device 8, and the like. It houses a backup power source 9 (see FIG. 1). Here, each of the plurality of branch breakers 4 constitutes a switch 2 for switching energization / interruption for each of the plurality of circuits C1. It is not essential that the distribution board cabinet 10 accommodates the monitoring unit 7, the current measuring device 8 and the backup power supply 9, and at least a part of the monitoring unit 7, the current measuring device 8 and the backup power supply 9 is for the distribution board. It may be outside the cabinet 10. Further, as the distribution board system 1 provided with the abnormality detection system 100, the main breaker 3, the seismic breaker 5, and the interconnection breaker 6 are not indispensable configurations, and the main breaker 3, the seismic breaker 5, and the interconnection breaker 6 are included. At least one may be omitted as appropriate.

The distribution board cabinet 10 includes a box-shaped body 11 (see FIG. 2) having an open front surface and a cover that closes the opening of the body 11. In FIG. 2, the cover is not shown. The distribution board cabinet 10 is attached to a member constituting the building, for example, a wall 110 of the building (see FIG. 2). The distribution board cabinet 10 may be mounted in a state where a part or the whole is embedded in a mounting hole provided in the wall 110. The distribution board cabinet 10 is provided, for example, at a height position that is out of reach of children of average height and can be operated by adults of average height. Be done.

Further, the distribution board cabinet 10 further includes a lid that covers the front surface of the cover with the distribution board cabinet 10 attached to the wall 110. The lid is attached to the cover so that it can be moved between the closed and open positions. The closed position is a position that covers the front surface of the cover. The open position is a position that does not cover at least a part of the front surface of the cover. The lid may cover a part of the front surface of the cover when the cover is viewed from a certain direction, and in the present embodiment, the lid in the closed position is the front surface of the cover when the cover is viewed from the front. It covers almost the entire area.

As shown in FIG. 2, the distribution board cabinet 10 houses a main circuit breaker 3, a plurality of branch breakers 4, a seismic circuit breaker 5, an interconnection breaker 6, a monitoring unit 7, and a current measuring device 8. There is. The main circuit breaker 3, the plurality of branch breakers 4, the seismic circuit breaker 5, the interconnection breaker 6, the monitoring unit 7, and the current measuring device 8 are attached to the body 11 directly or via mounting parts or the like. FIG. 2 shows the arrangement of the main breaker 3, the plurality of branch breakers 4, the seismic breaker 5, the interconnection breaker 6, the monitoring unit 7, and the current measuring device 8 inside the distribution board cabinet 10. The arrangement of is an example and can be changed as appropriate. Further, although the backup power supply 9 is not shown in FIG. 2, the backup power supply 9 may be arranged at an appropriate position inside the distribution board cabinet 10.

The main breaker 3 is arranged inside the distribution board cabinet 10 at a position slightly to the left of the center in the left-right direction. The position of the main breaker 3 inside the distribution board cabinet 10 may be another position, for example, on the right side of the center. The main breaker 3 includes a contact 31 (see FIG. 1) electrically connected between the primary side terminal and the secondary side terminal. The main breaker 3 is provided with an operating lever on the front surface for turning the contact 31 on or off. Further, the main breaker 3 includes, for example, a detection unit 32 (see FIG. 1) that detects an abnormal state in which an electric leakage current flows through the contact 31. The main circuit breaker 3 opens the contact 31 when the detection unit 32 detects an abnormal state in which an electric leakage current flows through the contact 31. As a result, the main breaker 3 cuts off the power supply to the circuit on the secondary side of the main breaker 3 and protects the circuit. Further, the main circuit breaker 3 opens the contact 31 when the detection unit 32 detects an overcurrent such as a short-circuit current or an overload current. Further, the detection unit 32 of the main circuit breaker 3 has a function of detecting the open phase state of the neutral wire in the single-phase three-wire wiring. Then, when the detection unit 32 detects the open phase state of the neutral line, the main circuit breaker 3 opens the contact 31. The main breaker 3 may have a limiter function that opens the contact 31 when a current exceeding a predetermined limit value flows.

The secondary terminals of the main breaker 3 are the conductive bar of the first voltage pole (L1 pole), the conductive bar of the second voltage pole (L2 pole), and the neutral pole (N pole) in the single-phase three-wire wiring. Conductive bars are connected. Each conductive bar is formed by a conductive member in the shape of a long plate long in the left-right direction, and is arranged in the center of the distribution board cabinet 10 in the vertical direction and at a position on the right side of the main breaker 3. There is.

The plurality of branch breakers 4 are divided into upper and lower sides of each conductive bar, and a plurality of each of the branch breakers 4 are arranged so as to be arranged in the left-right direction. In the present embodiment, as shown in FIG. 2, 12 branch breakers 4 are arranged so as to be arranged in the left-right direction on the upper side of each conductive bar. Further, on the lower side of each conductive bar, 11 branch breakers 4 are arranged so as to be arranged in the left-right direction.

Each branch breaker 4 includes a pair of primary side terminals and a pair of secondary side terminals. Each branch breaker 4 has a contact that is electrically connected between the primary side terminal and the secondary side terminal. On the front surface of each branch breaker 4, an operation lever for turning on or off the contact built in each branch breaker 4 is provided.

The branch breaker 4 is available for 100V and 200V. The pair of primary side terminals included in the branch breaker 4 for 100V are electrically connected to one of the conductive bar of the first voltage pole and the conductive bar of the second voltage pole and the conductive bar of the neutral pole, respectively. To. The pair of primary side terminals included in the branch breaker 4 for 200V are electrically connected to the conductive bar of the first voltage pole and the conductive bar of the second voltage pole, respectively. Further, the corresponding wiring C11 is electrically connected to the secondary side terminal of the branch breaker 4. The wiring C11 connected to the secondary terminal of each branch breaker 4 includes, for example, an electric device 23 such as a lighting fixture and a hot water supply facility, an outlet 22 (see FIG. 1), or a wiring fixture such as a wall switch as a load. The above is connected. Therefore, the distribution board system 1 is an electric device 23 connected to the secondary terminal of the branch breaker 4 via the wiring C11, or an electric device 24 connected to the outlet 22 (for example, an air conditioner or a television receiver). Etc. can be supplied with electric power.

Further, the branch breaker 4 as the switch 2 includes a detection unit 202 (see FIG. 1) and a circuit breaker 203 (see FIG. 1). The circuit breaker 203 is built in the branch breaker 4 and includes a contact electrically connected between the primary side terminal and the secondary side terminal in the branch breaker 4. The blocking unit 203 opens and closes this contact by, for example, electromagnetic drive. The circuit breaker 203 electrically disconnects the secondary terminal from the primary terminal in the branch breaker 4 by at least opening the contacts. In this way, when the breaker 203 opens the contact, the branch breaker 4 is turned off (non-conducting), and the circuit C1 including the branch breaker 4 is cut off. On the contrary, the circuit breaker 203 electrically connects the primary side terminal and the secondary side terminal in the branch breaker 4 by closing the contact.

The detection unit 202 detects an abnormal state in which an overcurrent such as a short-circuit current or an overload current flows. When the detection unit 202 detects an abnormal state in which an overcurrent flows through the contact of the circuit breaker 203, the branch breaker 4 drives the circuit breaker 203 to open the contact. As a result, when an abnormal state such as an overcurrent occurs, the branch breaker 4 cuts off the power supply to the circuit on the secondary side of the branch breaker 4 to protect the circuit. Further, the detection unit 202 may have a function of detecting an electric leakage state of the wiring C11 connected to the branch breaker 4. In this case, the branch breaker 4 opens the contact when the detection unit 202 detects the occurrence of electric leakage.

Here, the switch 2 (branch breaker 4) further includes a communication unit 201. The communication unit 201 is configured to be able to communicate with the communication unit 72 (described later) of the monitoring unit 7. The term "communicable" as used in the present disclosure means that signals can be exchanged directly or indirectly via a network or a repeater by an appropriate communication method of wired communication or wireless communication. That is, the switch 2 (communication unit 201) and the monitoring unit 7 (communication unit 72) can exchange signals with each other. Here, a unique address is set for each of the plurality of switches 2. That is, the communication unit 201 communicates with the monitoring unit 7 using the address set in the switch 2 (the address stored in the memory or the like).

In the present embodiment, the communication unit 201 and the monitoring unit 7 can communicate with each other in both directions, transmit a signal from the communication unit 201 to the monitoring unit 7, and transmit a signal from the monitoring unit 7 to the communication unit 201. Both transmissions are possible.

Further, in the present embodiment, the communication unit 201 uses the substrate of the current measuring device 8 as at least a part of the communication path between the current measuring device 8 and the monitoring unit 7. In other words, the conductive layer of the substrate constitutes a part of the communication path between the communication unit 201 and the monitoring unit 7. As the communication method between the communication unit 201 and the board, for example, wired communication conforming to a communication standard such as RS-485 or a wired LAN (Local Area Network) can be appropriately adopted.

In this way, in the switch 2 (branch breaker 4) provided with the communication unit 201 and the circuit breaker 203, it is possible to open and close the contact of the circuit breaker 203 according to the control signal received by the communication unit 201. .. Therefore, in the switch 2 (branch breaker 4), for example, by remote control, the circuit breaker 203 shuts off the circuit C1 by opening the contact, or the circuit breaker 203 closes the contact to close the circuit C1. It can be energized.

The seismic circuit breaker 5 is arranged below the conductive bar so as to be aligned with the branch breaker 4 in the left-right direction. The seismic circuit breaker 5 has a seismic sensor 51 that detects vibration applied to the distribution board cabinet 10. When the seismic sensor 51 detects a vibration having a magnitude exceeding a predetermined reference value (for example, a seismic motion having a seismic intensity of "5"), the seismic breaker 5 performs a shutoff operation to break the circuit. The seismic circuit breaker 5 generates a pseudo electric leakage state by electrically connecting, for example, between the first voltage pole or the second voltage pole and the neutral pole via an impedance element having a relatively low resistance. When the seismic circuit breaker 5 generates a pseudo electric leakage state, the detection unit 32 of the main breaker 3 detects the pseudo electric leakage state generated by the seismic circuit breaker 5 and opens the contact 31. As a result, when vibration of a magnitude exceeding the reference value is applied to the distribution board cabinet 10 due to an earthquake or the like, the power supply to the circuit connected to the secondary side of the main breaker 3 can be cut off.

A distributed power source 21 provided in the facility 500 is connected to the interconnection breaker 6. The interconnection breaker 6 is electrically connected between the conductive bar electrically connected to the secondary terminal of the main breaker 3 and the distributed power source 21. When the contact of the interconnection breaker 6 is turned on, the distributed power supply 21 can be interconnected with the grid power supply 20 to supply power to the load. On the other hand, when the contact of the interconnection breaker 6 is turned off, the distributed power source 21 is disconnected from the system power supply 20. The interconnection breaker 6 has, for example, a detection function for detecting the occurrence of an electric leakage. When the interconnection breaker 6 detects the occurrence of an electric leakage by the detection function, the interconnection breaker 6 shuts off and disconnects the distributed power supply 21 from the grid power supply 20. The interconnection breaker 6 may have a detection function for detecting an overcurrent such as a short-circuit current. In this case, when the interconnection breaker 6 detects an overcurrent, the interconnection breaker 6 performs a cutoff operation. It may be configured.

The current measuring device 8 is configured to measure the current flowing through a load (electrical devices 23, 24, etc.) electrically connected to each of the plurality of branch breakers 4. The current measuring device 8 includes, for example, a substrate and a plurality of coils. The substrate has a long plate shape in the left-right direction. A plurality of holes are formed in the substrate. Terminals extending from the conductive bar and connected to the primary terminal of the branch breaker 4 are inserted into the plurality of holes. The coil is, for example, a logoski coil, which is formed around a hole in the substrate. In the present embodiment, the current measuring device 8 measures the current flowing through each of the plurality of branch breakers 4 and the interconnection breaker 6. Here, the current measuring device 8 (current sensor) is shared with the sensor used in the energy management system that manages the energy used in the facility 500 in which the distribution board system 1 is installed.

The backup power supply 9 includes a battery 91 which is a secondary battery such as a nickel hydrogen battery or a lithium ion battery, and a charging circuit for charging the battery 91. The charging circuit of the backup power supply 9 receives power from the primary side of the main breaker 3, for example, to charge the battery 91. The backup power supply 9 supplies power to the monitoring unit 7 and the like using the battery 91 as a power source when, for example, the system power supply 20 has a power failure. Therefore, even if the system power supply 20 has a power failure, the monitoring unit 7 can operate by receiving power supplied from the backup power supply 9. When the system power supply 20 is normal, the monitoring unit 7 operates by receiving power from the primary side of the main breaker 3, that is, the system power supply 20.

By the way, the monitoring unit 7 has a measurement function for measuring at least one of the current and the electric power of the plurality of branch circuits (circuit C1), and a communication function with the controller 25 arranged outside the distribution board cabinet 10. doing.

Since the monitoring unit 7 is the main configuration of the abnormality detection system 100, the details of the configuration related to the abnormality detection system 100 in the monitoring unit 7 will be described in the column of "(2.3) Configuration of the abnormality detection system".

The controller 25 controls or monitors a device compatible with the HEMS (Home Energy Management System) (hereinafter referred to as a HEMS compatible device). Here, the HEMS-compatible device includes, for example, a smart meter, a solar power generation device, a power storage device, a fuel cell, an electric vehicle, an air conditioner, a lighting device, a hot water supply device, a refrigerator, an electric curtain, an electric shutter, a television receiver, and the like. .. HEMS-compatible devices are not limited to these devices. In the present embodiment, the electric devices 23 and 24 are both HEMS-compatible devices and are configured to be able to communicate with the controller 25.

Further, the monitoring unit 7 is configured to be able to communicate with the management server 300 outside the facility 500. The monitoring unit 7 is directly or indirectly connected to a network 200 such as the Internet via a router or the like, and can communicate with the management server 300 via the network 200. As a result, the monitoring unit 7 can communicate not only with the management server 300 but also with the information terminal 400 and the like connected to the network 200. The information terminal 400 is, for example, a mobile terminal such as a smartphone or tablet terminal owned by a resident (user) of the facility 500.

Communication between the management server 300 or the information terminal 400 and the monitoring unit 7 may be performed, for example, via the controller 25. That is, when the controller 25 is connected to the network 200, the monitoring unit 7 can communicate with the management server 300 or the information terminal 400 connected to the network 200 via the controller 25.

In the distribution board system 1 according to the present embodiment, the monitoring unit 7 receives the current value flowing through each of the plurality of branch circuits (circuit C1) measured by the current measuring device 8 from the current measuring device 8. Further, the monitoring unit 7 receives the current value measured by the main current measuring device that measures the current flowing through the main breaker 3 from the main current measuring device. The monitoring unit 7 converts each of the current values measured by the current measuring device 8 and the main current measuring device into a power value (instantaneous power value). The monitoring unit 7 has a function of calculating the data of the electric energy obtained by integrating the collected instantaneous power data over a predetermined time. Therefore, the controller 25 can control or monitor the HEMS-compatible device based on the instantaneous power and the electric energy in each of the plurality of branch circuits.

Further, the monitoring unit 7 has a function (communication function) of communicating with at least one of a photovoltaic power generation device, a power storage device, and a power conversion device electrically connected to an electric vehicle. The power conversion device is used not only for power conversion for unidirectional charging from the distribution board system 1 to the electric vehicle, but also for both charging and discharging the storage battery of the electric vehicle by performing power conversion in both directions. It may be a configuration.

Further, the monitoring unit 7 has a communication function between at least one of the gas meter and the water meter. The communication method between the monitoring unit 7 and the photovoltaic power generation device, the power storage device, and the power conversion device is, for example, wired communication conforming to a communication standard such as RS-485. The communication method between the monitoring unit 7 and the gas meter and the water meter is not limited to wired communication, but may be wireless communication. The monitoring unit 7 may be able to communicate with, for example, a hot water storage type hot water supply device or the like.

(2.3) Configuration of Abnormality Detection System Next, the configuration of the abnormality detection system 100 will be described with reference to FIG.

In the present embodiment, as described above, the abnormality detection system 100 mainly includes the monitoring unit 7 housed in the distribution board cabinet 10. Therefore, in the following, the abnormality detection system 100 will be described together with the description of the monitoring unit 7.

First, regarding the arrangement of the monitoring unit 7, for example, the monitoring unit 7 is arranged on the left side of the main breaker 3 inside the distribution board cabinet 10 (see FIG. 2). Since the monitoring unit 7 operates by receiving power supplied from the primary side of the main breaker 3, it can operate even when the main breaker 3 shuts off. When the system power supply 20 has a power failure, the monitoring unit 7 receives power from the backup power source 9, so that the monitoring unit 7 can operate even when the system power supply 20 has a power failure.

The monitoring unit 7 is electrically connected to the current measuring device 8. Further, a main current measuring device for measuring the current flowing through the main breaker 3 is electrically connected to the monitoring unit 7. The monitoring unit 7 has a function (measurement function) of calculating a power value based on the current value measured by the current measuring device 8 and the main current measuring device. Since the current measuring device 8 measures the current flowing through each of the plurality of branch circuits, the monitoring unit 7 measures at least one of the current and the electric power of each branch circuit based on the current value measured by the current measuring device 8. measure.

Further, as described above, the monitoring unit 7 has a function (communication function) of communicating with the controller 25 configured to control or monitor the HEMS-compatible device. In the present embodiment, as described above, the electrical devices 23 and 24 are both HEMS-compatible devices and are configured to be communicable with the controller 25. That is, the electrical devices 23 and 24 are both objects of control or monitoring by the controller 25.

The communication method between the monitoring unit 7 and the controller 25 is, for example, communication of a specific low power radio station (a radio station that does not require a license), Wi-Fi (registered trademark), Bluetooth (registered trademark), etc. in the 920 MHz band. It is a wireless communication that conforms to the standard and uses radio waves as a medium. The communication method between the monitoring unit 7 and the controller 25 may be wired communication conforming to a communication standard such as a wired LAN. The communication protocol for communication between the monitoring unit 7 and the controller 25 is, for example, Ethernet (registered trademark), ECHONET Lite (registered trademark), or the like. As for the communication method between the controller 25 and the HEMS compatible devices (including the electric devices 23 and 24), an appropriate communication method can be adopted as in the communication method between the monitoring unit 7 and the controller 25. From the above, the monitoring unit 7 can indirectly communicate with the HEMS compatible devices (electrical devices 23 and 24) via the controller 25.

Here, in the present embodiment, bidirectional communication is possible between the monitoring unit 7 and the controller 25, and between the monitoring unit 7 and the management server 300 or the information terminal 400. Therefore, for example, a signal can be transmitted from the monitoring unit 7 to the HEMS-compatible device via the controller 25, and conversely, a signal can be transmitted from the HEMS-compatible device to the monitoring unit 7 via the controller 25.

Further, as described above, the monitoring unit 7 can also communicate with the management server 300 or the information terminal 400 via the network 200. Bidirectional communication is also possible between the monitoring unit 7 and the management server 300 or the information terminal 400.

More specifically, as shown in FIG. 1, the monitoring unit 7 includes an information processing unit 71, a communication unit 72, a presentation unit 73, and a storage unit 74.

The information processing unit 71 includes, for example, a computer system. A computer system mainly comprises one or more processors and one or more memories as hardware. The function as the information processing unit 71 is realized by executing the program recorded in one or more memories of the computer system by one or more processors. The program may be pre-recorded in the memory of the computer system, may be provided through a telecommunications line, and may be recorded on a non-temporary recording medium such as a memory card, optical disk, or hard disk drive that can be read by the computer system. May be provided.

The information processing unit 71 has the functions of the measurement unit 711, the detection unit 712, the control unit 713, the notification unit 714, and the estimation unit 715.

The measuring unit 711 measures the electric power passing through at least one of the main breaker 3 and the branch breaker 4 in the distribution board system 1. The monitoring unit 7 of the present embodiment is electrically connected to a main current measuring device for measuring the current flowing through the main breaker 3 and a current measuring device 8. Here, the main current measuring device includes, for example, a current sensor including a current transformer (CT). The measuring unit 711 receives from the current measuring device 8 the current value flowing through each of the plurality of branch breakers 4 and the interconnection breaker 6 measured by the current measuring device 8. Further, the measuring unit 711 receives the current value measured by the main current measuring device (that is, the current value flowing through the main line) from the main current measuring device. The measuring unit 711 converts each of the current values measured by the current measuring device 8 and the main current measuring device into a power value (instantaneous power value). Further, the measurement unit 711 has a function of calculating the data of the electric energy obtained by integrating the collected instantaneous power data over a predetermined time.

Further, in the present embodiment, the monitoring unit 7 has a line voltage between the first voltage pole and the neutral pole and a second voltage pole and the middle voltage measured by the voltage measuring device in the circuit on the secondary side of the main breaker 3. The line voltage between the sex pole and the line voltage between the first voltage pole and the second voltage pole are received from the voltage measuring device. As a result, the measurement unit 711 acquires voltage information regarding the voltage applied to the circuit C1 connected to the distribution board system 1. Here, the voltage information includes the voltage between the first voltage pole and the neutral pole (that is, the L1-N phase), the voltage between the second voltage pole and the neutral pole (that is, the L2-N phase), and the first voltage. The voltage between the pole and the second voltage pole (that is, L1-L2 phase) is included.

The detection unit 712 detects an abnormality in the wiring C11 included in the circuit C1. In this embodiment, as described above, each of the plurality of branch circuits is a circuit C1. Therefore, there are a plurality of circuits C1 that are the targets of detecting the abnormality of the wiring C11 in the detection unit 712.

In the present embodiment, the detection unit 712 detects the abnormality of the wiring C11 based on the voltage information regarding the voltage applied to the plurality of circuits C1. Here, as an example, the detection unit 712 uses the voltage of the secondary side terminal of the main breaker 3 as the voltage information regarding the voltage applied to the plurality of circuits C1. Specifically, the detection unit 712 is connected to the secondary terminal of the main breaker 3, the conductive bar of the first voltage pole (L1 pole), the conductive bar of the second voltage pole (L2 pole), and the middle. Information on the voltage between the conductive bars of the sex pole (N pole) is used as voltage information to detect an abnormality in the wiring C11.

In the present embodiment, as an example, the detection result of the detection unit 712 is transmitted from the notification unit 714 to the information terminal 400. Further, the detection result of the detection unit 712 is written in the storage unit 74 by the notification unit 714.

Here, in the present embodiment, the detection unit 712 can detect at least the generation of an arc as an abnormality of the wiring C11. Specifically, the detection unit 712 can determine whether or not an arc is generated in the wiring C11 by the same technique as the arc fault circuit breaker (AFCI). That is, the arc short-circuit protection circuit breaker can recognize the current characteristic and the voltage characteristic peculiar to the arc generated in the wiring C11 by using an electronic circuit, and can detect the arc generated in the wiring C11. By the same principle as this, the detection unit 712 can determine whether or not an arc is generated in the wiring C11 of the circuit C1.

Here, as described above, there are two types of arcs that can be generated in the wiring C11: parallel arcs and series arcs. Hereinafter, the parallel arc and the series arc will be briefly described with reference to FIGS. 3A to 4B. 4A and 4B show an example of a current waveform flowing through the wiring C11 when a parallel arc and a series arc are generated, where the horizontal axis is time and the vertical axis is current, respectively.

As shown in FIG. 3A, for example, the parallel arc can be generated when the conductors of the pair of electric wires C10 constituting the wiring C11 come into contact with each other to cause a short circuit. The dotted arrow I1 in FIG. 3A schematically represents the path of the current flowing through the wiring C11 when the parallel arc is generated. The magnitude of the current flowing through the wiring C11 when the parallel arc is generated is, for example, several tens [A] to several hundreds [A]. In the parallel arc, for example, the coating C12 is damaged by the wiring C11 being caught on the edge of an object (furniture, etc.) in the facility 500, or the wiring C11 is sandwiched between metal members such as staples. Can occur. The parallel arc can also occur, for example, when an overcurrent flows through the wiring C11 and the coating C12 melts, or when an animal bites the wiring C11 and the coating C12 is damaged. In addition, the parallel arc may occur when the coating C12 is deteriorated in insulation due to the wiring C11 being continuously exposed to ultraviolet rays for a long period of time.

FIG. 4A shows an example of the waveform of the current flowing through the wiring C11 when the parallel arc is generated. As shown in FIG. 4A, when a parallel arc is generated, a pulse current intermittently flows through the wiring C11. That is, when the parallel arc is generated, the waveform of the current flowing through the wiring C11 includes a unique pattern accompanying the generation of the parallel arc.

The series arc can be generated, for example, as shown in FIG. 3B, when one of the pair of electric wires C10 constituting the wiring C11 is half-broken. The dotted arrow I2 in FIG. 3B schematically represents the path of the current flowing through the wiring C11 when the series arc is generated. The magnitude of the current flowing through the wiring C11 when the series arc is generated is several [A] to 30 [A]. Therefore, the magnitude of the current flowing through the wiring C11 when the series arc is generated is larger than the magnitude of the current flowing through the load (for example, the electric devices 23 and 24) connected to the wiring C11 in the normal state when no abnormality occurs. It may be smaller. The series arc can occur, for example, when the wiring C11 is repeatedly bent or the wiring C11 is pulled by an excessive force.

FIG. 4B shows an example of the waveform of the current flowing through the wiring C11 when the series arc is generated. As shown in FIG. 4B, when the series arc is generated, the wiring C11 is superposed with the high frequency component peculiar to the series arc with respect to the current supplied to the load (for example, the electric devices 23 and 24). Current flows. That is, the current flowing through the wiring C11 when the series arc is generated may include a high frequency component peculiar to the series arc as illustrated in FIG. 4B.

In the present embodiment, as described above, the detection unit 712 detects the abnormality of the wiring C11 based on the voltage information regarding the voltage applied to the plurality of circuits C1. More specifically, in the present embodiment, the detection unit 712 can determine that an arc is generated in the wiring C11 when the voltage applied to the circuit C1 exceeds the threshold value. For example, a capacitor and a resistor are provided in the electric circuit connecting the first voltage pole and the second voltage pole, the electric circuit connecting the first voltage pole and the neutral pole, and the electric circuit connecting the second voltage pole and the neutral pole, respectively. CR circuits connected in series are connected in parallel. Then, when the voltage value of the voltage applied to both ends of the resistor exceeds the threshold value for each of these CR circuits, the detection unit 712 generates an arc in the wiring C11 connected to the corresponding CR circuit, that is, the wiring C11. It is determined that a wiring abnormality has occurred in. That is, the detection unit 712 determines that a wiring abnormality has occurred in the wiring C11 when high-frequency noise caused by the generation of an arc is generated in these electric circuits.

Here, the detection unit 712 detects an abnormality based on a monitoring target composed of one or more physical quantities related to the circuit C1. That is, in the present embodiment, as described above, the detection unit 712 detects the abnormality of the wiring C11 based on the voltage information regarding the voltage applied to the plurality of circuits C1. Since the voltage applied to the plurality of circuits C1 is a physical quantity related to the circuit C1, at least the voltage applied to the plurality of circuits C1 is included in the monitoring target in the present embodiment. Further, the detection unit 712 can detect an abnormality in the wiring C11 based on the monitoring target by monitoring not only the voltage applied to the plurality of circuits C1 but also one or more physical quantities related to the circuit C1.

In addition to the voltage applied to the plurality of circuits C1, physical quantities that can be monitored include, for example, current, temperature, color, sound, odor, deformation, and the like. That is, when an abnormality such as the above-mentioned arc (parallel arc or series arc) occurs in the wiring C11 of the circuit C1, some characteristic may appear in the physical quantity other than the voltage. As an example, in the circuit C1 in which the abnormality of the wiring C11 of this type occurs, the waveform of the current flowing through the wiring C11 may include a peculiar pattern accompanying the occurrence of the abnormality. Further, in the circuit C1 in which an abnormality of this type of wiring C11 occurs, for example, due to heat generation of the wiring C11 or the like, the wiring C11 is subject to temperature change, color change (discoloration), sound (vibration sound, etc.), odor or deformation. Etc. may contain unique features.

Therefore, the detection unit 712 uses, for example, the output of a temperature sensor, an image sensor, an odor sensor, or another physical quantity sensor to detect an abnormality based on a monitoring target consisting of a physical quantity other than voltage, together with voltage or instead of voltage. You may. As described above, the physical quantity as a monitoring target used by the detection unit 712 may include not only the voltage but also a physical quantity other than the voltage such as current, temperature, color, sound, odor or deformation.

Further, in the present embodiment, the detection unit 712 determines that the abnormality of the wiring C11 has occurred for the first time when the state in which the monitoring target represents an abnormality as described above continues for a certain detection time. That is, if the state in which the monitoring target such as the current flowing through the circuit C1 indicates an abnormality is resolved before the detection time is reached, the detection unit 712 does not determine that the abnormality in the wiring C11 has occurred. As a result, in the detection unit 712, for example, when a state in which the monitoring target indicates an abnormality occurs for a moment due to the influence of noise or the like, it becomes difficult to mistakenly determine that the abnormality is in the wiring C11, and the detection accuracy of the abnormality in the wiring C11 is improved. improves.

The control unit 713 controls each of the plurality of switches 2 (branch breakers 4). In the present embodiment, the control unit 713 is in a partially cut-off state in which only a part of the circuits C1 among the plurality of circuits C1 is cut off when the detection unit 712 detects the occurrence of an abnormality.

As an example in the present embodiment, the control unit 713 outputs a control signal for controlling the circuit C1 to the circuit C1 when controlling the circuit C1. Thereby, the control unit 713 can control each of the plurality of circuits C1. The "control of the circuit C1" as used in the present disclosure may include disconnection and restoration of the power supply to the circuit C1, limitation of the current flowing through the circuit C1, control of the electric devices 23 and 24 included in the circuit C1, and the like.

As an example, the control unit 713 controls each of the plurality of switches 2 by transmitting a control signal to the communication unit 201 of the switch 2 according to the detection result of the detection unit 712, and the plurality of circuits C1. Each energization / shutoff is switched. That is, the control unit 713 opens the contact (blocking unit 203) built in the switch 2 by outputting a control signal to the switch 2 (communication unit 201) included in any of the circuits C1. It is possible to cut off the power supply to the circuit C1. Further, the control unit 713 controls the electric devices 23 and 24 by outputting a control signal to the electric devices 23 and 24 included in any of the circuits C1 directly or via the controller 25. It is possible.

The notification unit 714 notifies the user. The notification unit 714 notifies when the detection unit 712 detects the occurrence of an abnormality. Here, as an example, when notifying the detection result of the detection unit 712, the notification unit 714 presents the detection result from the information terminal 400 to the user by transmitting the detection result of the detection unit 712 to the information terminal 400. As a result, the information terminal 400 that has received the detection result of the detection unit 712 can notify (notify) the detection result to the user. As an example, when the detection unit 712 detects an abnormality in the wiring C11, the notification unit 714 transmits a signal including the detection result to the information terminal 400. The user operates the information terminal 400 to know the detection result of the detection unit 712 by, for example, viewing an e-mail or starting an application for the abnormality detection system 100 installed in the information terminal 400. Can be done. However, the mode of notification by the notification unit 714 is not limited to this.

That is, there are various modes of notification by the notification unit 714, for example, transmission to the information terminal 400 (see FIG. 1), display (including light emission), sound (including voice) output, and non-temporary recording medium. There are recording (writing) and printing (printout) on. For example, the notification unit 714 displays a character string and / or an image on a display unit 73 such as a display device (for example, a liquid crystal display) provided in the monitoring unit 7 or a display device connected to the monitoring unit 7. , The detection result may be visually presented to the user. In this case, the presentation unit 73 may include a solid-state light emitting element such as an LED (Light Emitting Diode) provided in the monitoring unit 7. Further, the notification unit 714 is auditory by outputting sound (including voice and alarm sound) from, for example, a presentation unit 73 such as a speaker provided in the monitoring unit 7 or a speaker connected to the monitoring unit 7. In addition, the detection result may be presented to the user. In addition, the notification unit 714 may output according to the detection result of the detection unit 712, for example, by recording (writing) to the storage unit 74, printing (printing out), or the like.

In the present embodiment, the notification unit 714 executes a process of presenting detailed information indicating the details of the abnormality in the detection result at least when an abnormality of the wiring C11 occurs. The detailed information may include, for example, type information indicating the type of abnormality of the wiring C11 and location information regarding the place where the abnormality of the wiring C11 occurs. The type information referred to here includes at least two types of parallel arc and series arc. The generation information referred to here includes, for example, information for identifying the circuit C1 in which the abnormality has occurred among the plurality of circuits C1. That is, the generated information includes information for identifying the circuit C1 that causes the abnormality among the plurality of circuits C1, and includes the estimation result of the estimation unit 715, which will be described later.

Further, the detailed information may include device information regarding the device included in the circuit C1 and time information regarding the abnormal time of the wiring C11. The device information referred to here includes information such as the type and number of devices (for example, electric devices 23 and 24) included in the circuit C1 in which the abnormality has occurred. The time information referred to here includes information indicating the occurrence timing (time) of the abnormality of the wiring C11 and the duration from the occurrence of the abnormality of the wiring C11 to the end. The device information included in the detailed information may be the estimation result of the estimation unit 715.

Further, the detailed information may include history information regarding the operation history of at least one of the detection unit 712 and the control unit 713. The history information referred to here includes information on the time when the detection unit 712 operates (detects an abnormality) and / or the time when the control unit 713 operates (controls the switch 2).

The estimation unit 715 estimates the cause of the abnormality. The estimation unit 715 basically estimates the cause of the abnormality based on the detection result of the detection unit 712. That is, when an abnormality occurs in the wiring C11 of any one of the plurality of circuits C1, the estimation unit 715 determines which of the plurality of circuits C1 causes the abnormality and the cause of the abnormality. presume. That is, the estimation unit 715 identifies the circuit C1 presumed to be the cause of the abnormality from the plurality of circuits C1.

The term "estimate" as used in the present disclosure means to determine (determine) by a person, and in particular, it is not limited to a person making a decision by thinking about it, but also includes making a decision based on a certain fact. Therefore, for example, when input information is input to a computer system, if the computer system performs a calculation based on the input information and outputs some information as output information, the output information is "" in the computer system. It has been "estimated". That is, in the estimation unit 715, the detection result of the detection unit 712 is input, and the cause of the abnormality is estimated by identifying the circuit C1 that causes the abnormality based on the detection result.

In the present embodiment, as described above, the detection unit 712 detects the abnormality of the wiring C11 based on the voltage information regarding the voltage applied to the plurality of circuits C1. Therefore, it is difficult for the detection unit 712 to detect an abnormality in the wiring C11 for each circuit C1, and when an abnormality occurs in the wiring C11 of any one of the plurality of circuits C1, a plurality of circuits C1 are present. It is difficult to identify which of the circuits C1 the abnormality has occurred.

Therefore, the abnormality detection system 100 according to the present embodiment includes the estimation unit 715, so that if an abnormality occurs in the wiring C11 of any one of the plurality of circuits C1, the circuit causes the abnormality. C1 can be estimated.

The communication unit 72 communicates with the controller 25 or the like installed in the facility 500. As described above, the controller 25 controls or monitors the HEMS-compatible device. That is, the controller 25 can acquire the instantaneous power and the electric energy of each of the plurality of loads (electrical devices 23, 24, etc.) connected to the plurality of branch breakers 4 by communicating with the monitoring unit 7. It can control or monitor HEMS-compatible devices.

Further, the communication unit 72 is configured to be able to communicate with the current measuring device 8. Further, as described above, the communication unit 72 communicates with the communication unit 201 of each switch 2 (branch breaker 4) by using, for example, a part of the conductive layer of the substrate of the current measuring device 8. Do. That is, the communication unit 72 has a communication function with the current measuring device 8 and the switch 2 (branch breaker 4) in addition to the communication function with the controller 25. The communication unit 72 may have separate communication modules, for example, for communication with the controller 25 and for communication with the current measuring device 8 and the switch 2.

As already extended, the presentation unit 73 is a device such as a display device or a speaker provided in the monitoring unit 7 that visually or audibly presents the detection result to the user.

The storage unit 74 includes, for example, an electrically rewritable non-volatile memory such as EEPROM (Electrically Erasable Programmable Read-Only Memory), or a volatile memory such as RAM (Random Access Memory). The storage unit 74 has a function of storing at least the detection result of the detection unit 712.

(3) Operation Hereinafter, the operation of the abnormality detection system 100 according to the present embodiment will be described with reference to FIGS. 5 to 6C.

(3.1) Overall Operation FIG. 5 is a flowchart showing the overall operation of the abnormality detection system 100, that is, an example of an abnormality detection method using the abnormality detection system 100.

First, the abnormality detection system 100 executes a detection process for detecting an abnormality in the wiring C11 in the circuit C1 by the detection unit 712, and determines whether or not there is an abnormality in the wiring C11 in the circuit C1 (S1). Specifically, for example, when a series arc is generated in the wiring C11 in the circuit C1, the detection unit 712 generates an abnormality (series arc) in the wiring C11 based on the voltage information regarding the voltage applied to the plurality of circuits C1. Is detected. If there is no abnormality in the process S1 (S1: No), the abnormality detection system 100 repeatedly executes the detection process (S1) for detecting the abnormality of the wiring C11 by the detection unit 712.

On the other hand, if there is an abnormality in the wiring C11 (S1: Yes), the abnormality detection system 100 sets the variable N to "1" (S2), and the control unit 713 sets the circuit C1 of the priority N to "block target". ”(S3). At this time, the control unit 713 outputs a control signal to the switch 2 (branch breaker 4) included in the circuit C1 of the priority N which is the “blocking target”, so that the contact built in the switch 2 is built in. (Cut off unit 203) is opened to cut off the power supply to the circuit C1. As a result, among the plurality of circuits C1, the circuit C1 having the priority of "1" is blocked as the "blocking target".

In short, in the abnormality detection system 100 according to the present embodiment, when the detection unit 712 detects the occurrence of an abnormality, the control unit 713 shuts off only a part of the circuits C1 among the plurality of circuits C1. The part is shut off. That is, in this abnormality detection system 100, when an abnormality is detected by the detection unit 712, not all of the plurality of circuits C1 are blocked, but only a part of the circuits C1 is blocked. A partially blocked state is realized. A part of the circuits C1 among the plurality of circuits C1 may be one circuit C1 or two or more circuits C1. In the present embodiment, as an example, it is assumed that when the detection unit 712 detects the occurrence of an abnormality, the control unit 713 first shuts off one of the plurality of circuits C1. Therefore, a state in which only one circuit C1 having a priority of "1" among the plurality of circuits C1 is cut off is a "partially cut off state".

Here, the "priority" is an order set individually for each of the plurality of circuits C1. In the present embodiment, the priority is set based on the determination condition. In other words, the priority of each of the plurality of circuits C1 is set depending on whether or not a predetermined determination condition is satisfied. Therefore, the circuit C1 that is cut off in the partially cut-off state is the circuit C1 that satisfies the determination condition among the plurality of circuits C1. As a result, the circuit C1 suspected of having an abnormality, such as the circuit C1 in which an abnormality is likely to occur in the wiring C11, can be preferentially cut off before the other circuits C1.

Here, the determination conditions are that the current consumption is relatively large among the plurality of circuits C1, the current consumption is equal to or higher than a predetermined value, and the harmonic component in the current consumption is equal to or higher than a predetermined level. Includes at least one. By defining the priority based on such a determination condition, for example, when an abnormality occurs in the wiring C11, it is possible to shut off the circuit C1 which is preferable to be cut off as soon as possible. .. As an example, when the equipment (electrical equipment 23, 23) included in the circuit C1 has a heat source having a relatively large current consumption such as an electric stove or an IH cooking heater, the wiring C11 is used for the circuit C1. In the event of an abnormality, it is preferable to shut off as soon as possible. The current consumption of each circuit C1 used for determining the determination condition is, for example, the value of the current consumption measured by the measuring unit 711 periodically before the occurrence of an abnormality. However, not limited to this example, the determination condition may be determined using the current consumption of each circuit C1 measured by the measuring unit 711 at the time of occurrence of the abnormality or after the occurrence of the abnormality.

Further, in the abnormality detection system 100 according to the present embodiment, after the circuit C1 having the priority N is cut off as a cutoff target (S3), the detection unit 712 executes a detection process for detecting an abnormality in the wiring C11 in the circuit C1. (S4). At this time, similarly to the process S1, the detection unit 712 detects the abnormality of the wiring C11 based on the voltage information regarding the voltage applied to the plurality of circuits C1. Here, if the abnormality of the wiring C11 continues after the circuit C1 as the interruption target is interrupted, the detection unit 712 determines that there is an abnormality of the wiring C11 (S4: Yes). If there is an abnormality in the wiring C11 (S4: Yes), the abnormality detection system 100 increments the variable N (S5), and the control unit 713 performs a process of blocking the circuit C1 of the priority N as a “block target”. Execute (S3).

At this time, the control unit 713 outputs a control signal to the switch 2 (branch breaker 4) included in the circuit C1 of the priority N which is the “blocking target”, so that the contact built in the switch 2 is built in. (Cut off unit 203) is opened to cut off the power supply to the circuit C1.

In this way, if the abnormality of the wiring C11 continues after the "partially cut off state" in which only one circuit C1 having the priority of "1" among the plurality of circuits C1 is cut off is set. The remaining circuit C1 is also sequentially cut off as a "cutoff target". That is, in the abnormality detection system 100 according to the present embodiment, the control unit 713 cuts off a part of the circuits C1 among the plurality of circuits C1 to bring them into a partially cut-off state, and then the rest of the plurality of circuits C1. Circuit C1 is cut off in order.

In particular, in the present embodiment, after only one circuit C1 having a priority of "1" among the plurality of circuits C1 is cut off, the remaining circuits C1 among the plurality of circuits C1 also have a priority. It is shut off in descending order. Then, as described above, the priority order is set based on the determination condition. For circuits other than circuit C1 whose priority is "1", basically, for circuit C1 in which an abnormality is likely to occur, such as circuit C1 in which an abnormality is likely to occur in wiring C11, circuit C1 in which an abnormality is suspected occurs before other circuits C1. , It is possible to preferentially shut off.

On the other hand, in the process S4, if the abnormality is resolved, the detection unit 712 determines that there is no abnormality in the wiring C11 (S4: No), and therefore shifts to the process of estimating the circuit C1 which is the cause of the abnormality (S4: No). S6). That is, if the circuit C1 as the cutoff target cut off in the process S3 is the cause of the abnormality, the cause of the abnormality is removed by cutting off the circuit C1, and the detection unit 712 has the abnormality of the wiring C11. Judge that there is no.

In this case, in the process S6, the estimation unit 715 presumes that the circuit C1 cut off as the cutoff target in the immediately preceding process S3 is the cause of the abnormality. That is, the abnormality detection system 100 sequentially shuts off the plurality of circuits C1 in descending order of priority by repeating the processes S3 to S5 as long as the abnormality of the wiring C11 continues. When the abnormality of the wiring C11 disappears (solves), the estimation unit 715 estimates that the circuit C1 that was finally cut off as the cutoff target is the cause of the abnormality. That is, in the abnormality detection system 100 according to the present embodiment, the estimation unit 715 eliminates the detection of the abnormality in the detection unit 712 when a part of the circuits C1 among the plurality of circuits C1 is cut off as a cutoff target. , It is presumed that the blocking target is the cause of the abnormality.

Further, if the circuit C1 as the cause of the abnormality is estimated in the process S6, the abnormality detection system 100 recovers the circuit C1 other than the circuit C1 estimated to be the cause of the abnormality (S7). That is, since it is presumed that there is no abnormality in the wiring C11 for the circuit C1 other than the circuit C1 presumed to be the cause of the abnormality, the control unit 713 is for the circuit C1 that is presumed to have no abnormality in these wirings C11. In, the process of recovering as a "recovery target" is executed. That is, the control unit 713 restores the circuit C1 other than the circuit C1 presumed to be the cause of the abnormality by the estimation unit 715 of the plurality of circuits C1. At this time, the control unit 713 outputs a control signal to the switch 2 (branch breaker 4) included in one or more circuits C1 which are "recovery targets", so that the contact built in the switch 2 is built in. (Circuit breaker 203) is closed, and the power supply to the circuit C1 is restarted. As a result, among the plurality of circuits C1, circuits C1 other than the circuit C1 presumed to be the cause of the abnormality by the estimation unit 715 are restored as "recovery targets".

After that, the abnormality detection system 100 notifies the user by the notification unit 714 (S8). That is, the notification unit 714 notifies when the detection unit 712 detects the occurrence of an abnormality. At this time, as an example, the notification unit 714 transmits the detection result of the detection unit 712 to the information terminal 400, so that the information terminal 400 presents the detection result to the user. Moreover, the notification unit 714 includes detailed information indicating the details of the abnormality in the detection result and notifies the notification. The detailed information includes information for identifying the circuit C1 in which the abnormality has occurred among the plurality of circuits C1 estimated by the estimation unit 715 as the generation information.

The abnormality detection system 100 repeatedly executes the series of processes S1 to S8 described above. The flowchart of FIG. 5 is merely an example of the operation of the abnormality detection system 100, and the processing may be omitted or added as appropriate, or the order of the processing may be changed as appropriate. For example, the order of the notification process S8 and the recovery process S7 may be reversed.

(3.2) Specific Operation Example Next, a specific operation example of the abnormality detection system 100 according to the present embodiment will be described with reference to FIGS. 6A to 6C. In FIGS. 6A to 6C, the branch breaker 4 in the off (blocked) state is shaded (dot hatched) to distinguish it from the branch breaker 4 in the on (energized) state. Here, the abnormality detection system 100 detects the presence or absence of an abnormality in the wiring C11 for a plurality of circuits C101 to C108 (each corresponding to the circuit C1), and when an abnormality occurs in the wiring C11 of the circuit C107. Take as an example. Further, among the plurality of circuits C101 to C108, the circuit C101 has the highest priority, and the circuit C102, the circuit C103, the circuit C104, the circuit C105, the circuit C106, the circuit C107, and the circuit C108 have the lowest priority. Assume.

When an abnormality in the wiring C11 is detected in any of the circuits C1, as shown in FIG. 6A, the abnormality detection system 100 first shuts down only the circuit C101 having the priority "1". Since the abnormality of the wiring C11 is not resolved by this alone, the abnormality detection system 100 also shuts off the remaining circuits C102 to C108 in order from the side having the highest priority, as shown in FIG. 6B.

Then, as shown in FIG. 6B, when the circuit C107 is cut off as a cutoff target, the abnormality of the wiring C11 is resolved. Therefore, the estimation unit 715 presumes that C107, which is the object to be blocked at this time, is the cause of the abnormality. After that, the abnormality detection system 100 restores the circuits C101 to C106 other than the circuit C107 presumed to be the cause of the abnormality. As a result, as shown in FIG. 6C, only the circuit C107, which is the cause of the abnormality, is cut off, and the other circuits C101 to C106 and C108 are energized.

(4) Modified Example The first embodiment is only one of the various embodiments of the present disclosure. The first embodiment can be changed in various ways depending on the design and the like as long as the object of the present disclosure can be achieved. Each figure described in the present disclosure is a schematic view, and the ratio of the size and the thickness of each component in each figure does not necessarily reflect the actual dimensional ratio. Further, the same function as the abnormality detection system 100 according to the first embodiment may be realized by an abnormality detection method, a (computer) program, a non-temporary recording medium on which the program is recorded, or the like.

The abnormality detection method according to one aspect includes a detection process (corresponding to “S1” in FIG. 5) and a blocking process (corresponding to “S3” in FIG. 5). The detection process is a process for detecting an abnormality in the wiring C11 included in the plurality of circuits C1. The blocking process is a process of partially shutting off when an abnormality is detected. The partially cut-off state is a state in which only a part of the circuits C1 out of the plurality of circuits C1 is cut off. The program according to one aspect is a program for causing one or more processors to execute the above-mentioned abnormality detection method.

Hereinafter, modifications of the first embodiment will be listed. The modifications described below can be applied in combination as appropriate.

The abnormality detection system 100 in the present disclosure includes, for example, a computer system in the information processing unit 71 and the like. The main configuration of a computer system is a processor and memory as hardware. When the processor executes the program recorded in the memory of the computer system, the function as the abnormality detection system 100 in the present disclosure is realized. The program may be pre-recorded in the memory of the computer system, may be provided through a telecommunications line, and may be recorded on a non-temporary recording medium such as a memory card, optical disk, or hard disk drive that can be read by the computer system. May be provided. A processor in a computer system is composed of one or more electronic circuits including a semiconductor integrated circuit (IC) or a large scale integrated circuit (LSI). The integrated circuit such as IC or LSI referred to here has a different name depending on the degree of integration, and includes an integrated circuit called a system LSI, VLSI (Very Large Scale Integration), or ULSI (Ultra Large Scale Integration). Further, an FPGA (Field-Programmable Gate Array) programmed after the LSI is manufactured, or a logical device capable of reconfiguring the junction relationship inside the LSI or reconfiguring the circuit partition inside the LSI should also be adopted as a processor. Can be done. A plurality of electronic circuits may be integrated on one chip, or may be distributed on a plurality of chips. The plurality of chips may be integrated in one device, or may be distributed in a plurality of devices. The computer system referred to here includes a microprocessor having one or more processors and one or more memories. Therefore, the microprocessor is also composed of one or a plurality of electronic circuits including a semiconductor integrated circuit or a large-scale integrated circuit.

Further, it is not an essential configuration for the abnormality detection system 100 that at least a part of the functions of the abnormality detection system 100 are integrated in one housing, and the components of the abnormality detection system 100 are contained in a plurality of housings. It may be provided in a dispersed manner. For example, the estimation unit 715 may be provided in a housing different from the detection unit 712 and the control unit 713. Further, the functions of the control unit 713 or the estimation unit 715 may be provided in a device other than the monitoring unit 7, such as a server. Further, at least a part of the functions of the abnormality detection system 100, for example, the functions of the estimation unit 715 may be realized by the cloud (cloud computing) or the like.

On the contrary, in the first embodiment, at least a part of the functions distributed in a plurality of devices may be integrated in one housing.

Further, the abnormality detection system 100 may have a function of changing the target items related to the detection unit 712. The "target item" referred to in the present disclosure is an item such as various parameters, algorithms, operation timings, or contents related to the detection unit 712. For example, the target item includes the sensitivity (including the threshold value for determination) related to the determination of whether or not the wiring C11 is abnormal in the detection unit 712, the determination algorithm, and the like. Therefore, by changing such a target item, the abnormality detection system 100 can change, for example, in what case the wiring C11 is determined to be abnormal. That is, by changing the target item, for example, it is possible to adjust the determination criteria for determining what kind of feature appears in the voltage information as an abnormality of the wiring C11.

Further, the voltage information used by the detection unit 712 for detecting the abnormality of the wiring C11 may be any information about the voltage applied to the plurality of circuits C1 (branch circuits), and is related to the voltage of the secondary side terminal of the main breaker 3. Not limited to information. For example, even if the detection unit 712 detects an abnormality in the wiring C11 by using information on the voltage of the primary side terminal of the main circuit breaker 3 or the voltage of the primary side terminal of any one of the branch breakers 4 as voltage information. Good.

Further, in the first embodiment, the detection unit 712 determines that an arc is generated in the wiring C11 when the voltage applied to the circuit C1 exceeds the threshold value, but the present invention is not limited to this example. For example, the detection unit 712 determines the wiring C11 when the number of times the voltage applied to both ends of the resistor included in the CR circuit exceeds the threshold value (that is, the number of times high-frequency noise is generated per fixed time) exceeds the set value. It may be determined that an arc has occurred in.

Further, the detection unit 712 may detect an abnormality in the wiring C11 in each circuit C1 based on the current flowing through each circuit C1 in addition to or instead of the voltage information. As described above, the monitoring unit 7 has acquired the current value measured by the current measuring device 8. Therefore, the detection unit 712 can also detect an abnormality in the wiring C11 included in the individual circuits C1 based on the currents flowing through each of the plurality of circuits C1. That is, the monitoring unit 7 can also use the current value used in the measurement function (the function of measuring at least one of the current and the electric power of the plurality of branch circuits) to detect the abnormality of the wiring C11 in the detection unit 712. it can.

Further, the circuit C1 including the wiring C11 to be detected by the detection unit 712 is not limited to the branch circuit including the branch breaker 4. For example, the circuit C1 including the interconnection breaker 6 and the distributed power source 21 may include the wiring C11 to be detected by the detection unit 712 for an abnormality. In this circuit C1, the wiring C11 between the interconnection breaker 6 and the distributed power source 21 is the target of abnormality detection by the detection unit 712, and the interconnection breaker 6 has a function of blocking the circuit C1. It becomes. Further, the circuit C1 including the seismic breaker 5 may include the wiring C11 to be detected by the detection unit 712, and in this case, the switch having the function of the seismic breaker 5 to cut off the circuit C1. It becomes 2. Further, the circuit C1 including the main breaker 3 may include the wiring C11 to be detected by the detection unit 712 for the abnormality.

Further, the control unit 713 shuts off the circuits C1 one by one when the detection unit 712 detects the occurrence of an abnormality, but the present invention is not limited to this example. That is, when the detection unit 712 detects the occurrence of an abnormality, the control unit 713 may shut off a plurality of circuits C1 (two, three, or four or more) at a time.

Further, the notification unit 714 may transmit the detection result of the detection unit 712 to the external system 600. Specifically, the notification unit 714 may transmit the detection result to the controller 25 (external system 600) via the communication unit 72. Further, the notification unit 714 may transmit the detection result to the cloud via the network 200. In this aspect, the external system 600 can be useful for studying the tendency of the occurrence of an abnormality in the wiring C11, the measures against the abnormality, and the like by collecting the detection result as big data, for example.

Further, each switch 2 may have a function as a detection unit 712. In this aspect, the monitoring unit 7 may have a function of collecting the detection results of each switch 2 instead of the detection unit 712. That is, the monitoring unit 7 may determine whether or not to operate the control unit 713 according to the detection result of each detection unit 712 collected from each switch 2.

Further, when an abnormality occurs, the notification unit 714 may notify recovery information including a procedure for recovering from the abnormality of the wiring C11. As an example, when an arc occurs in any of the wirings C11, the notification unit 714 may present as recovery information that the contact information to the electric construction company and the contact to the electric construction company are urged. The "contact information" here may include, for example, a telephone number, an e-mail address, or a URL (Uniform Resource Locator) of the homepage when the electric construction company has set up the homepage.

Further, the detection unit 712 may be in a mode of detecting an abnormality in the wiring C11 by using, for example, a machine-learned classifier. The classifier may be capable of performing relearning while the anomaly detection system 100 is in use.

The classifier may include, for example, a linear classifier such as SVM (Support Vector Machine), a classifier using a neural network, or a classifier generated by deep learning using a multi-layer neural network. When the classifier is a classifier using a trained neural network, the trained neural network includes, for example, CNN (Convolutional Neural Network), BNN (Bayesian Neural Network), and the like. obtain. In this case, the detection unit 712 or the estimation unit 715 is realized by mounting a trained neural network on an integrated circuit such as an ASIC (Application Specific Integrated Circuit) or an FPGA (Field-Programmable Gate Array).

Further, the current measuring device 8 is not limited to a mode having a logo ski coil, and is, for example, a mode having a current transformer (current transformer), a Hall element, a magnetic resistance element such as a GMR (Giant Magnetic Resistances) element, and a sensor such as a shunt resistance. It may be.

Further, in the first embodiment, the backup power supply 9 is provided outside the monitoring unit 7, but the present invention is not limited to this configuration, and the backup power supply 9 may be built in the monitoring unit 7.

(Embodiment 2)
The operation of the control unit 713 and the estimation unit 715 of the abnormality detection system 100 according to the present embodiment is different from that of the abnormality detection system 100 according to the first embodiment. Hereinafter, the same configurations as those in the first embodiment are designated by common reference numerals, and the description thereof will be omitted as appropriate.

In the present embodiment, when the detection unit 712 detects the occurrence of an abnormality, the control unit 713 shuts off all of the plurality of circuits C1 and then restores only a part of the circuits C1 among the plurality of circuits C1. By doing so, it will be partially blocked. That is, in the present embodiment, in the abnormality detection system 100, when the detection unit 712 detects the occurrence of an abnormality, all of the plurality of circuits C1 are temporarily shut off, and then some of the circuits C1 are "restored". By recovering as a "target", a partially blocked state is realized. Of the plurality of circuits C1, some of the circuits C1 to be "recovered" may be one circuit C1 or two or more circuits C1. In the present embodiment, as an example, when the detection unit 712 detects the occurrence of an abnormality, it is the highest priority that the control unit 713 recovers after all of the plurality of circuits C1 are temporarily cut off (the highest priority is given. It is assumed that there is one circuit C1 (with a priority of "1"). Therefore, among the plurality of circuits C1, the state in which the circuits C1 other than the one circuit C1 having the priority of "1" is cut off is the "partially cut off state".

Further, in the present embodiment, after only one circuit C1 having a priority of "1" is restored, the remaining circuits C1 among the plurality of circuits C1 are also sequentially "recovered targets" in descending order of priority. Will be restored as. That is, in the abnormality detection system 100 according to the present embodiment, the control unit 713 restores a part of the circuits C1 of the plurality of circuits C1 and puts them in a partially cut-off state, and then the rest of the plurality of circuits C1. Circuit C1 is restored in order.

In particular, in the present embodiment, after only one circuit C1 having a priority of "1" among the plurality of circuits C1 is restored, the remaining circuits C1 among the plurality of circuits C1 also have a priority. It will be restored in descending order. Then, the priority is set based on the determination condition. For circuits other than circuit C1 whose priority is "1", basically, for circuit C1 in which an abnormality is likely to occur, such as circuit C1 in which an abnormality is likely to occur in wiring C11, circuit C1 in which an abnormality is suspected occurs before other circuits C1. , It will be possible to recover preferentially.

Here, in the present embodiment, when the detection unit 712 detects the occurrence of an abnormality, all of the plurality of circuits C1 are first cut off, so that the abnormality of the wiring C11 is basically eliminated once. Then, the abnormality detection system 100 according to the present embodiment sequentially restores the plurality of circuits C1 in descending order of priority as long as the state without the wiring C11 continues. When the abnormality of the wiring C11 reoccurs, the estimation unit 715 estimates that the circuit C1 finally restored as the restoration target is the cause of the abnormality. That is, in the abnormality detection system 100 according to the present embodiment, the estimation unit 715 detects the occurrence of an abnormality in the detection unit 712 when a part of the circuits C1 among the plurality of circuits C1 is restored as a restoration target. Then, it is presumed that the recovery target is the cause of the abnormality.

Then, if the estimation unit 715 estimates the circuit C1 as the cause of the abnormality, the abnormality detection system 100 restores the circuit C1 other than the circuit C1 estimated to be the cause of the abnormality. That is, the control unit 713 restores the circuit C1 other than the circuit C1 presumed to be the cause of the abnormality by the estimation unit 715 of the plurality of circuits C1.

Next, a specific operation example of the abnormality detection system 100 according to the present embodiment will be described with reference to FIGS. 7A to 7C. In FIGS. 7A to 7C, the branch breaker 4 in the off (blocked) state is shaded (dot hatched) to distinguish it from the branch breaker 4 in the on (energized) state. Here, the abnormality detection system 100 detects the presence or absence of an abnormality in the wiring C11 for a plurality of circuits C101 to C108, and an example is taken when an abnormality occurs in the wiring C11 of the circuit C107. Further, among the plurality of circuits C101 to C108, the circuit C101 has the highest priority, and the circuit C102, the circuit C103, the circuit C104, the circuit C105, the circuit C106, the circuit C107, and the circuit C108 have the lowest priority. Assume.

When an abnormality in the wiring C11 is detected in any of the circuits C1, the abnormality detection system 100 first shuts off all of the plurality of circuits C101 to C108, as shown in FIG. 7A. As a result, the abnormality of the wiring C11 is temporarily resolved. After that, as shown in FIG. 7B, the abnormality detection system 100 sequentially executes recovery from the circuit C101 having the priority of "1".

Then, as shown in FIG. 7B, when the circuit C107 is restored as the restoration target, the abnormality of the wiring C11 reoccurs. Therefore, the estimation unit 715 estimates that C107, which is the recovery target at this time, is the cause of the abnormality. After that, the abnormality detection system 100 restores the circuit C108, which has not been restored yet, among the circuits C101 to C106 and C108 other than the circuit C107 presumed to be the cause of the abnormality. In other words, the control unit 713 shuts off the circuit C107, which is presumed to be the cause of the abnormality, again. As a result, as shown in FIG. 7C, only the circuit C107 that is the cause of the abnormality is cut off, and the other circuits C101 to C106 and C108 are energized.

Further, in the second embodiment, when the detection unit 712 detects the occurrence of an abnormality, the control unit 713 shuts off all of the plurality of circuits C1 and then restores the circuits C1 one by one. Not exclusively. That is, when the detection unit 712 detects the occurrence of an abnormality, the control unit 713 shuts off all of the plurality of circuits C1 and then restores the plurality of circuits C1 (2, 3, or 4 or more) at a time. You may.

The various configurations (including the modified examples) described in the second embodiment can be appropriately combined with the various configurations (including the modified examples) described in the first embodiment.

(Summary)
As described above, the abnormality detection system (100) according to the first aspect includes a detection unit (712) and a control unit (713). The detection unit (712) detects an abnormality in the wiring (C11) included in the plurality of circuits (C1). When the detection unit (712) detects the occurrence of an abnormality, the control unit (713) sets a partially cut-off state in which only a part of the circuits (C1) of the plurality of circuits (C1) is cut off. ..

According to this aspect, when the detection unit (712) detects the occurrence of an abnormality, not all of the plurality of circuits (C1) are cut off, but some of the circuits (C1) are cut off. It can be in a partially blocked state. Therefore, even when an abnormality occurs in the wiring (C11), the circuit (C1) including necessary equipment such as lighting equipment, disaster prevention equipment (including evacuation equipment and guidance equipment) or medical equipment is energized. It is possible to continue. Therefore, according to the abnormality detection system (100), there is an advantage that the operation of the circuit (C1) can be ensured when the wiring (C11) is abnormal.

In the abnormality detection system (100) according to the second aspect, in the first aspect, the detection unit (712) has an abnormality in the wiring (C11) based on voltage information regarding the voltage applied to the plurality of circuits (C1). Is detected.

According to this aspect, it is possible to collectively detect an abnormality of the wiring (C11) in a plurality of circuits (C1) from one voltage information.

In the abnormality detection system (100) according to the third aspect, in the first or second aspect, the control unit (713) receives a plurality of circuits (C1) when the detection unit (712) detects the occurrence of an abnormality. By interrupting only a part of the circuit (C1), a part of the circuit (C1) is cut off.

According to this aspect, among the plurality of circuits (C1), the circuits other than the circuit (C1) which is partially cut off can be continuously energized without being cut off.

In the abnormality detection system (100) according to the fourth aspect, in the third aspect, the control unit (713) interrupts a part of the circuits (C1) among the plurality of circuits (C1) to partially shut off. After the state is set, the remaining circuit (C1) of the plurality of circuits (C1) is cut off in order.

According to this aspect, by gradually interrupting the plurality of circuits (C1), it is possible to continue energization without interrupting a relatively large number of circuits (C1).

The abnormality detection system (100) according to the fifth aspect further includes an estimation unit (715) for estimating the cause of the abnormality in the third or fourth aspect. When a part of the circuits (C1) among the plurality of circuits (C1) is cut off as a cutoff target, the estimation unit (715) stops the detection of the abnormality by the detection unit (712), and the cutoff target is abnormal. It is presumed to be the cause of.

According to this aspect, the circuit (C1) that causes the abnormality can be estimated.

In the abnormality detection system (100) according to the sixth aspect, in the first or second aspect, the control unit (713) receives a plurality of circuits (C1) when the detection unit (712) detects the occurrence of an abnormality. Block all of. After that, the control unit (713) restores only a part of the circuits (C1) out of the plurality of circuits (C1) to bring it into a partially cut-off state.

According to this aspect, when an abnormality occurs, all of the plurality of circuits (C1) can be temporarily cut off.

In the abnormality detection system (100) according to the seventh aspect, in the sixth aspect, the control unit (713) restores a part of the circuit (C1) among the plurality of circuits (C1) and partially shuts off the circuit (C1). After the state is set, the remaining circuit (C1) of the plurality of circuits (C1) is restored in order.

According to this aspect, the cutoff state can be continued for a relatively large number of circuits (C1) by gradually recovering the plurality of circuits (C1).

The abnormality detection system (100) according to the eighth aspect further includes an estimation unit (715) for estimating the cause of the abnormality in the sixth or seventh aspect. When the detection unit (712) detects the occurrence of an abnormality when a part of the circuits (C1) out of the plurality of circuits (C1) is restored as the restoration target, the estimation unit (715) is the restoration target. Is presumed to be the cause of the abnormality.

According to this aspect, the circuit (C1) that causes the abnormality can be estimated.

In the abnormality detection system (100) according to the ninth aspect, in the fifth or eighth aspect, the control unit (713) is the cause of the abnormality in the estimation unit (715) among the plurality of circuits (C1). The circuit (C1) other than the presumed circuit (C1) is restored.

According to this aspect, the circuit (C1) having no abnormality can be restored.

In the abnormality detection system (100) according to the tenth aspect, in any one of the first to ninth aspects, the circuit (C1) that is interrupted in the partially interrupted state is a determination condition among the plurality of circuits (C1). It is a circuit (C1) that satisfies.

According to this aspect, the specific circuit (C1) satisfying the determination condition can be preferentially cut off.

In the abnormality detection system (100) according to the eleventh aspect, in the tenth aspect, the determination condition includes at least one of the following three conditions. The above three conditions are that the current consumption is relatively large in the plurality of circuits (C1), the current consumption is equal to or higher than a predetermined value, and the harmonic component in the current consumption is equal to or higher than a predetermined level. Is.

According to this aspect, for example, when an abnormality occurs in the wiring (C11), the circuit (C1) which is preferably cut off at an early stage can be cut off as early as possible.

The abnormality detection system (100) according to the twelfth aspect further includes a notification unit (714) in any one of the first to eleventh aspects. The notification unit (714) notifies when an abnormality is detected by the detection unit (712).

According to this aspect, it is possible to notify the user that the occurrence of the abnormality is detected by the detection unit (712).

The distribution board system (1) according to the thirteenth aspect includes the abnormality detection system (100) according to any one of items 1 to 12 and a plurality of branch breakers (4). The plurality of branch breakers (4) are inserted into the plurality of circuits (C1), respectively, and are controlled by the control unit (713).

According to this aspect, there is an advantage that the operation of the circuit (C1) can be ensured when the wiring (C11) is abnormal.

The abnormality detection method according to the fourteenth aspect includes a detection process and a blocking process. The detection process is a process for detecting an abnormality in the wiring (C11) included in the plurality of circuits (C1). The cutoff process is a process of setting a partial cutoff state in which only a part of the circuits (C1) out of the plurality of circuits (C1) is cut off when the occurrence of an abnormality is detected.

According to this aspect, there is an advantage that the operation of the circuit (C1) can be ensured when the wiring (C11) is abnormal.

The program according to the fifteenth aspect is a program for causing one or more processors to execute the abnormality detection method according to the fourteenth aspect.

According to this aspect, there is an advantage that the operation of the circuit (C1) can be ensured when the wiring (C11) is abnormal.

Not limited to the above aspects, various configurations (including modified examples) of the abnormality detection system (100) according to the first and second embodiments can be embodied by the above abnormality detection method or program.

The configuration according to the second to twelfth aspects is not an essential configuration for the abnormality detection system (100) and can be omitted as appropriate.

1 Distribution board system 4 Branch breaker 10 Distribution board cabinet 100 Abnormality detection system 712 Detection unit 713 Control unit 714 Notification unit 715 Estimating unit C1 Circuit C11 Wiring

Claims (15)

A detector that detects abnormalities in wiring included in multiple circuits, and
When the detection unit detects the occurrence of the abnormality, the detection unit includes a control unit that puts a partial cutoff state in which only a part of the plurality of circuits is cut off.
Anomaly detection system. The detection unit detects the abnormality based on voltage information regarding voltages applied to the plurality of circuits.
The abnormality detection system according to claim 1. When the detection unit detects the occurrence of the abnormality, the control unit cuts off only a part of the plurality of circuits to bring the control unit into the partially cutoff state.
The abnormality detection system according to claim 1 or 2. The control unit cuts off some of the plurality of circuits to bring them into the partially cut-off state, and then cuts off the remaining circuits of the plurality of circuits in order.
The abnormality detection system according to claim 3. Further provided with an estimation unit for estimating the cause of the abnormality,
The estimation unit presumes that the cutoff target is the cause of the abnormality when the detection unit stops detecting the abnormality when a part of the plurality of circuits is cut off as a cutoff target. To do,
The abnormality detection system according to claim 3 or 4. When the detection unit detects the occurrence of the abnormality, the control unit shuts off all of the plurality of circuits and then restores only a part of the plurality of circuits. Shut off,
The abnormality detection system according to claim 1 or 2. The control unit restores some of the plurality of circuits to bring them into the partially interrupted state, and then sequentially restores the remaining circuits of the plurality of circuits.
The abnormality detection system according to claim 6. Further provided with an estimation unit for estimating the cause of the abnormality,
When the detection unit detects the occurrence of the abnormality when a part of the circuits of the plurality of circuits is restored as a recovery target, the estimation unit causes the recovery target to be the cause of the abnormality. Estimate,
The abnormality detection system according to claim 6 or 7. The control unit restores a circuit other than the circuit presumed to be the cause of the abnormality by the estimation unit among the plurality of circuits.
The abnormality detection system according to claim 5 or 8. The circuit that is cut off in the partially cut-off state is a circuit that satisfies the determination condition among the plurality of circuits.
The abnormality detection system according to any one of claims 1 to 9. The determination condition is at least one that the current consumption is relatively large in the plurality of circuits, the current consumption is a predetermined value or more, and the harmonic component in the current consumption is a predetermined level or more. Including one
The abnormality detection system according to claim 10. A notification unit that notifies when the occurrence of the abnormality is detected by the detection unit is further provided.
The abnormality detection system according to any one of claims 1 to 11. The abnormality detection system according to any one of claims 1 to 12, and the anomaly detection system.
A plurality of branch breakers inserted into the plurality of circuits and controlled by the control unit are provided.
Distribution board system. Detection processing that detects abnormalities in wiring included in multiple circuits, and
When the occurrence of the abnormality is detected, it has a cutoff process for setting a partial cutoff state in which only a part of the plurality of circuits is cut off.
Anomaly detection method. A program for causing one or more processors to execute the abnormality detection method according to claim 14.

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