JP7403082B2 - Monitoring system, monitoring method, program, and distribution board - Google Patents

Description

The present disclosure generally relates to a monitoring system, a monitoring method, a program, and a distribution board. More specifically, the present disclosure relates to a monitoring system, a monitoring method, a program, and a distribution board that monitor circuits connected to a distribution board.

Patent Document 1 discloses a distribution board in which a main switch and a plurality of branch switches are housed as internal devices inside a cabinet. The main switch and branch switch each have an earth leakage protection function. When the leakage protection function of the main switch and branch switch detects a leakage, the contacts are forcibly opened to protect the circuit.

JP 2017-107833 Publication

The present disclosure aims to provide a monitoring system, a monitoring method, a program, and a distribution board that can improve usability.

A monitoring system according to one aspect of the present disclosure is installed in a distribution board. The monitoring system includes a detection section, an output section, and a user detection section. The detection unit detects occurrence of an arc as a wiring abnormality in wiring included in a predetermined circuit. The output section performs output according to the detection result of the detection section. The predetermined circuit is at least one of a circuit within the distribution board, a circuit between a branch breaker of the distribution board and a load, and a circuit between the branch breaker and a power source. The user detection unit detects a movement of a user approaching the distribution board. The output unit presents detailed information regarding the occurrence of the arc when the user detection unit detects an action of the user approaching the distribution board . The output section outputs a control signal for interrupting the predetermined circuit to the predetermined circuit when the arc occurs. The detailed information includes restoration information including a procedure for restoring the predetermined circuit.

A monitoring method according to one aspect of the present disclosure includes a detection process, an output process, and a user detection process. The detection process is a process of detecting the occurrence of an arc as a wiring abnormality in wiring included in a predetermined circuit. The output process is a process of outputting according to the detection result of the detection process. The predetermined circuit is at least one of a circuit within a distribution board, a circuit between a branch breaker of the distribution board and a load, and a circuit between the branch breaker and a power source. The user detection process is a process of detecting the movement of a user approaching the distribution board. In the output processing, when the user detection processing detects the movement of the user approaching the distribution board, detailed information regarding the occurrence of the arc is presented . In the output processing, a control signal for cutting off the predetermined circuit is output to the predetermined circuit when the arc occurs. The detailed information includes restoration information including a procedure for restoring the predetermined circuit.

A program according to one aspect of the present disclosure causes one or more processors to execute the above monitoring method.

A power distribution board according to one aspect of the present disclosure includes the above-mentioned monitoring system and a power distribution board cabinet. The distribution board cabinet accommodates the monitoring system.

The present disclosure has the advantage that usability can be improved.

FIG. 1 is an explanatory diagram showing a schematic configuration of a monitoring system and a distribution board in which the monitoring system is used according to an embodiment of the present disclosure. FIG. 2 is an explanatory diagram of the distribution board same as above, viewed from the front with the lid and cover removed. FIG. 3A is an explanatory diagram of the principle of generation of parallel arcs. FIG. 3B is an explanatory diagram of the principle of series arc generation. FIG. 4A is a waveform diagram showing an example of the waveform of the current flowing through the wiring when a parallel arc occurs. FIG. 4B is a waveform diagram showing an example of the waveform of the current flowing through the wiring when a series arc occurs. FIG. 5 is a flowchart illustrating the operation of the above monitoring system.

(1) Overview The monitoring system 100 of this embodiment is used to monitor the circuit C1 connected to the distribution board 1, as shown in FIG. The monitoring system 100 includes a detection section 712 and an output section 713. In this embodiment, the components of the monitoring system 100 are included in a monitoring unit 7 (described later) disposed inside the distribution board 1.

The detection unit 712 detects a wiring abnormality in the wiring C11 included in the circuit C1 connected to the distribution board 1. The “circuit connected to the distribution board” in the present disclosure may include the main breaker 3, branch breaker 4, seismic breaker 5, and interconnection breaker 6 installed inside the distribution board 1. In addition, the “circuit connected to the distribution board” in the present disclosure refers to the outlet 22 or electrical equipment 24 that is electrically connected to the secondary side of the branch breaker 4, or directly connected to the secondary side of the branch breaker 4. , may include electrical equipment 23 that is electrically connected. Furthermore, the "circuit" in the present disclosure may include a distributed power source 21 electrically connected to the secondary side of the interconnection breaker 6. Hereinafter, the main breaker 3, branch breaker 4, seismic breaker 5, and interconnection breaker 6 will be referred to as "switches 2" unless they are particularly distinguished.

The “wiring abnormality” in the present disclosure may include abnormalities such as insulation deterioration or half-breakage in the wiring C11 included in the circuit C1. "Half-breakage" in the present disclosure means a state where the wire is about to break, and specifically, if the wiring C11 is a stranded wire, a part of the wires of the plurality of wires that make up the stranded wire The line is broken. The wiring abnormality may include, for example, when the wiring C11 is composed of a pair of electric wires, an arc (so-called parallel arc) is generated due to a short circuit between the pair of electric wires. Further, the wiring abnormality may include, for example, when the wiring C11 is composed of a pair of electric wires, an arc (so-called series arc) is generated due to half-breakage of one of the pair of electric wires.

The output unit 713 performs output according to the detection result of the detection unit 712. In particular, in this embodiment, the output unit 713 presents detailed information regarding the wiring abnormality at least when a wiring abnormality occurs in the wiring C11. "Presentation" in the present disclosure may include not only a mode in which detailed information is presented to a specific user, but also a mode in which detailed information is presented in a mode that can be viewed by unspecified users. The "user" in this disclosure is a user of the distribution board 1, and for example, if the facility 500 where the distribution board 1 is installed is a residence, it is a resident. That is, the "user" in this disclosure is basically a user of the facility 500 where the distribution board 1 is installed.

As described above, in this embodiment, when a wiring abnormality occurs in the wiring C11 in the circuit C1 connected to the distribution board 1, the output unit 713 presents detailed information regarding the wiring abnormality. Therefore, the user who has confirmed the detailed information can understand that a wiring abnormality has occurred, and can also take some kind of measure against the wiring abnormality that has occurred. In other words, this embodiment has the advantage of improving usability for the user compared to a case where detailed information regarding wiring abnormalities is not presented.

(2) Details Hereinafter, the monitoring system 100 of this embodiment and the distribution board 1 including the monitoring system 100 will be described in detail using FIGS. 1 and 2.

The distribution panel cabinet 10 (see FIG. 2) of the distribution panel 1 is installed and used in a facility 500 such as a single-family house or a residential unit of an apartment complex, for example. Note that the facility 500 in which the distribution board 1 is installed is not limited to each unit of a single-family house or an apartment complex, but may be installed in a non-residential building (for example, a factory, commercial building, office building, hospital, school, etc.). may be done.

In the following description, unless otherwise specified, the X-axis direction in FIG. 2 is defined as the left-right direction, and the Z-axis direction is defined as the up-down direction. Further, directions perpendicular to the X-axis direction and the Z-axis direction are defined as front-back directions. Furthermore, 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 merely examples, and are not intended to limit the directions in which the distribution board cabinet 10 and the distribution board 1 are used. Further, arrows indicating each direction in the drawings are merely shown for explanation and have no substance.

(2.1) Distribution board First, the distribution board 1 will be explained. As shown in FIG. 1, the electricity distribution board 1 includes a monitoring system 100 and a electricity distribution board cabinet 10 that accommodates the monitoring system 100. As shown in FIG. 2, the distribution board cabinet 10 accommodates a plurality of switches 2, a monitoring unit 7, a current measuring device 8, and a backup power source 9 (see FIG. 1). Here, the plurality of switches 2 include a main breaker 3 , a plurality of branch breakers 4 , a seismic breaker 5 , and an interconnection breaker 6 . Note that it is not essential that the distribution panel cabinet 10 accommodates the monitoring unit 7, the current measuring device 8, and the backup power source 9, and at least a portion of the monitoring unit 7, the current measuring device 8, and the backup power source 9 are It may be located outside the electric panel cabinet 10.

The distribution board cabinet 10 includes a box-shaped body 11 (see FIG. 2) with an open front surface, and a cover that closes the opening of the body 11. In FIG. 2, illustration of the cover is omitted. The distribution board cabinet 10 is attached to a member constituting the building, such as a building wall 110 (see FIG. 2), for example. Note that the distribution board cabinet 10 may be attached in a state where it is partially or entirely embedded in an attachment hole provided in the wall 110. For example, the distribution board cabinet 10 is installed at a height that is out of reach for a child of average height, but at a height that can be operated by an adult of average height. It will be done.

Moreover, the electricity distribution board cabinet 10 further includes a lid body that covers the front surface of the cover when the electricity distribution board cabinet 10 is attached to the wall 110. The lid body is attached to the cover so as to be movable between a closed position and an open position. The closed position is a position that covers the front of the cover. The open position is a position in which at least a portion of the front surface of the cover is not covered. Note that the lid body only needs to cover a part of the front surface of the cover when the cover is viewed from a certain direction, and in this embodiment, the lid body in the closed position covers only a portion of the front surface when the cover is viewed from the front. It covers almost the entire front of the.

As shown in FIG. 2, inside the distribution cabinet 10, a main breaker 3, a plurality of branch breakers 4, a seismic breaker 5, an interconnection breaker 6, a monitoring unit 7, and a current measuring device 8 are housed. ing. 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 are attached to the body 11 directly or via attachment parts or the like. FIG. 2 shows the arrangement of a main breaker 3, a plurality of branch breakers 4, a seismic breaker 5, a grid breaker 6, a monitoring unit 7, and a current measuring device 8 inside the distribution panel cabinet 10. These arrangements are just examples, and can be changed as appropriate. Although the backup power source 9 is not shown in FIG. 2, the backup power source 9 may be placed at an appropriate position inside the distribution panel cabinet 10.

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

The secondary terminal of the main breaker 3 includes a conductive bar for the first voltage pole (L1 phase), a conductive bar for the second voltage pole (L2 phase), and a conductive bar for the neutral pole (N phase) in single-phase three-wire wiring. Conductive bar is connected. Each conductive bar is formed of a conductive member in the shape of a long plate that is long in the left-right direction, and is placed at the center in the vertical direction and on the right side of the main breaker 3 inside the distribution panel cabinet 10. There is.

The plurality of branch breakers 4 are divided into upper and lower sides of each conductive bar, and are arranged so as to be lined up in the left-right direction. In this embodiment, as shown in FIG. 2, twelve branch breakers 4 are arranged above each conductive bar so as to be lined up in the left-right direction. Furthermore, eleven branch breakers 4 are arranged below each conductive bar so as to be lined up 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 electrically connected between a primary terminal and a secondary terminal. An operating lever is provided on the front surface of each branch breaker 4 to turn on or off a contact built into each branch breaker 4.

The branch breaker 4 has one for 100V and one for 200V. The pair of primary side terminals of the 100V branch breaker 4 are electrically connected to one of the first voltage pole conductive bar and the second voltage pole conductive bar, and to the neutral pole conductive bar, respectively. Ru. A pair of primary terminals of the 200V branch breaker 4 are electrically connected to the conductive bar of the first voltage pole and the conductive bar of the second voltage pole, respectively. Moreover, 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 is loaded with one electrical device 23 such as a lighting fixture, a hot water supply equipment, an outlet 22 (see FIG. 1), or a wiring device such as a wall switch. or more connected. Therefore, the distribution board 1 includes an electrical device 23 connected to the secondary side terminal of the branch breaker 4 via the wiring C11, or an electrical device 24 (for example, an air conditioner or a television receiver, etc.) connected to the outlet 22, etc. can supply power to.

Further, the branch breaker 4 is equipped with a detection unit 41 (see FIG. 1) that detects an abnormal state in which an overcurrent such as a short circuit current or an overload current flows in a built-in contact of the branch breaker 4. The branch breaker 4 opens the contacts when the detection unit 41 detects an abnormal state in which an overcurrent flows through the contacts. Thereby, the branch breaker 4 cuts off the power supply to the circuit on the secondary side of the branch breaker 4, thereby protecting the circuit. Further, the detection unit 41 has a function of detecting a leakage state of the wiring C11 connected to the branch breaker 4. Then, when the detection unit 41 detects the occurrence of electric leakage, the branch breaker 4 opens the contact.

The seismic breaker 5 is arranged below the conductive bar so as to line up with the branch breaker 4 in the left-right direction. The seismic breaker 5 has a seismic sensor 51 that detects vibrations applied to the distribution board cabinet 10. When the seismic sensor 51 detects a vibration of a magnitude exceeding a predetermined reference value (for example, seismic motion with a seismic intensity of 5), the seismic breaker 5 performs an interrupting operation to interrupt the circuit. The seismic breaker 5 generates a pseudo current leakage state by electrically connecting, for example, a first voltage pole or a second voltage pole and a neutral pole via an impedance element of relatively low resistance. When the seismic breaker 5 generates a pseudo current leakage state, the detection unit 32 of the main breaker 3 detects the pseudo current leakage state generated by the seismic breaker 5, and the main breaker 3 opens the contact 31. let Thereby, when a vibration exceeding a reference value is applied to the distribution board cabinet 10 due to an earthquake or the like, 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 a 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 is turned on, the distributed power source 21 is interconnected with the grid power source 20 and can 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 grid power source 20. The interconnection breaker 6 has a detection function that detects the occurrence of electric leakage, for example. When the detection function of the interconnection breaker 6 detects the occurrence of electric leakage, the interconnection breaker 6 performs a disconnection operation and disconnects the distributed power source 21 from the system power source 20. Note that the grid-connected breaker 6 may have a detection function that detects overcurrent such as short-circuit current, and when the detection function of the grid-connected breaker 6 detects an overcurrent, the grid-connected breaker 6 performs a cutoff operation. may be configured.

The current measuring device 8 is configured to measure the current flowing through the loads (electrical devices 23, 24, etc.) 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 plate shape that is long in the left and 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, respectively. The coil is, for example, a Rogowski coil, and is formed around the hole in the substrate. In this embodiment, the current measuring device 8 measures the current flowing through each of the plurality of branch breakers 4 and interconnection breakers 6. Here, the current measuring device 8 (current sensor) is also used as a sensor used in an energy management system that manages energy used in the facility 500 where the distribution board 1 is installed. Note that the current measuring device 8 is not limited to an embodiment having a Rogowski coil, but may also include a sensor such as a current transformer, a Hall element, a magnetoresistive element such as a GMR (Giant Magnetic Resistances) element, or a shunt resistor. But that's fine.

Backup power supply 9 includes a battery 91 that is a secondary battery such as a nickel metal hydride battery or a lithium ion battery, and a charging circuit that charges the battery 91. The charging circuit of the backup power supply 9 receives power from the primary side of the main breaker 3 and charges the battery 91 . The backup power source 9 supplies power to the monitoring unit 7 and the like using the battery 91 as a power source when the system power source 20 experiences a power outage. Therefore, even if the system power supply 20 experiences a power outage, the monitoring unit 7 can operate by receiving power 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 (system power supply 20).

Here, the switch 2 further includes a communication section 201. The communication unit 201 is configured to be able to communicate with a communication unit 72 (described later) of the monitoring unit 7. The communication unit 201 sends and receives signals to and from the monitoring unit 7 directly or indirectly via a network, a repeater, or the like using an appropriate communication method such as wired communication or wireless communication. 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 (address stored in a memory or the like).

In this embodiment, the communication unit 201 and the monitoring unit 7 are capable of bidirectional communication with each other, and the communication unit 201 can transmit signals to the monitoring unit 7, and the monitoring unit 7 can transmit signals to the communication unit 201. Both transmission and transmission are possible.

Further, in this embodiment, the communication unit 201 uses the board of the current measuring device 8 for at least part of the communication path with the monitoring unit 7. In other words, the conductive layer of the substrate forms part of the communication path between the communication section 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 wired LAN can be adopted as appropriate.

(2.2) Monitoring System Next, the monitoring system 100 will be described using FIG. 1. In this embodiment, as described above, the components of the monitoring system 100 are included in the monitoring unit 7, so the monitoring system 100 will be described below in conjunction with the explanation of the monitoring unit 7.

The monitoring unit 7 is arranged on the left side of the master breaker 3 inside the distribution board cabinet 10. Since the monitoring unit 7 operates by receiving power from the primary side of the main breaker 3, it can operate even when the main breaker 3 performs a cutoff operation. Note that in the event of a power outage in the system power supply 20, the monitoring unit 7 receives power from the backup power supply 9, so that it can operate even when the system power supply 20 is out of power.

More specifically, the monitoring unit 7 of this embodiment includes a control section 71, a communication section 72, a notification section 73, a storage section 74, and a user detection section 75.

The control unit 71 includes, for example, a computer system. A computer system mainly consists of a processor and a memory as hardware. The function of the control unit 71 is realized by the processor executing a program recorded in the memory of the computer system. The program may be pre-recorded in the memory of the computer system, may be provided through a telecommunications line, or may be recorded on a non-transitory storage medium readable by the computer system, such as a memory card, optical disc, hard disk drive, etc. may be provided.

The control unit 71 includes the functions of a measurement unit 711, a detection unit 712, and an output unit 713.

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

The detection unit 712 detects a wiring abnormality in the wiring C11 included in the circuit C1 connected to the distribution board 1. In this embodiment, a plurality of circuits C1 are connected to the distribution board 1. Therefore, the detection unit 712 detects wiring abnormality in the wiring C11 for each circuit C1. The detection unit 712 detects a wiring abnormality in the wiring C11 based on the current flowing through the circuit C1. In this embodiment, the detection section 712 is provided in the monitoring unit 7. The monitoring unit 7 acquires the current value measured by the current measuring device 8, as described above. Therefore, the detection unit 712 can detect a wiring abnormality in the wiring C11 included in each circuit C1 based on the current flowing through each of the plurality of circuits C1. Detailed information regarding the wiring abnormality of the wiring C11 detected by the detection unit 712 is stored in the storage unit 74.

In this embodiment, the detection unit 712 can detect the occurrence of an arc as a wiring abnormality in the wiring C11. Specifically, the detection unit 712 can determine whether or not an arc is occurring in the wiring C11 using a technique similar to that of an arc fault circuit interrupter (AFCI). That is, the arc short circuit protection circuit breaker uses an electronic circuit to recognize the current characteristics and voltage characteristics specific to the arc occurring in the wiring C11, and can detect the arc occurring in the wiring C11. Based on a principle similar to this, the detection unit 712 can determine whether an arc is occurring in the wiring C11.

Here, as already mentioned, there are two types of arcs that can occur in the wiring C11: parallel arcs and series arcs.

As shown in FIG. 3A, a parallel arc can occur when the conductors of a pair of electric wires C10 constituting the wiring C11 come into contact and short-circuit. A dotted arrow I1 in FIG. 3A represents a path of current flowing through the wiring C11 when a parallel arc occurs. The magnitude of the current flowing through the wiring C11 when a parallel arc occurs is, for example, several tens [A] to several hundred [A]. Parallel arcs can occur, for example, when the wiring C11 gets caught on the edge of an object (for example, furniture, etc.) in the facility 500, damaging the sheathing C12, or when the wiring C11 is pinched by a metal member such as a staple. obtain. Moreover, a parallel arc can occur, for example, when an overcurrent flows through the wiring C11 and the coating C12 melts, or when an animal bites the wiring C11. In addition, parallel arcs can also occur when the wiring C11 is degraded by continued exposure to ultraviolet rays over a long period of time.

FIG. 4A shows an example of the waveform of the current flowing through the wiring C11 when a parallel arc occurs. As shown in FIG. 4A, when a parallel arc occurs, a pulse current intermittently flows through the wiring C11. That is, when a parallel arc occurs, the waveform of the current flowing through the wiring C11 includes a unique pattern associated with the occurrence of the parallel arc. Therefore, the detection unit 712 can determine whether a parallel arc is occurring in the wiring C11 by comparing, for example, the waveform of the current flowing through the wiring C11 measured by the current measuring device 8 with the above pattern. is possible.

As shown in FIG. 3B, a series arc can occur when one of the pair of electric wires C10 forming the wiring C11 is half-broken. A dotted arrow I2 in FIG. 3B represents a path of current flowing through the wiring C11 when a series arc occurs. The magnitude of the current flowing through the wiring C11 when a series arc occurs is from several [A] to several ten [A]. Therefore, the magnitude of the current flowing through the wiring C11 when a series arc occurs is greater than the magnitude of the current flowing through the load (for example, electrical equipment 23, 24) connected to the wiring C11 in a normal state when no wiring abnormality occurs. may also become smaller. Series arcs can occur, for example, when the wiring C11 is repeatedly bent or when the wiring C11 is pulled with excessive force.

FIG. 4B shows an example of the waveform of the current flowing through the wiring C11 when a series arc occurs. As shown in FIG. 4B, when a series arc occurs, a high frequency component specific to a series arc is superimposed on the current supplied to the load (for example, electrical equipment 23, 24) in the wiring C11. Current flows. That is, the current flowing through the wiring C11 when a series arc occurs may include a high frequency component specific to a series arc as illustrated in FIG. 4B. Therefore, the detection unit 712 can determine whether or not a series arc has occurred in the wiring C11, for example, based on the high frequency component of the current flowing through the wiring C11 measured by the current measuring device 8.

The output unit 713 performs output according to the detection result by the detection unit 712. In this embodiment, the output unit 713 executes a process of presenting detailed information regarding the wiring abnormality at least when a wiring abnormality occurs in the wiring C11. For example, the output unit 713 displays a character string and/or an image on a display device installed in the monitoring unit 7 (for example, a liquid crystal display, etc.) or a display device connected to the monitoring unit 7, thereby providing information to the user. Present detailed information visually. Further, for example, the output unit 713 visually presents detailed information to the user by lighting up a light source including a solid-state light emitting element such as an LED (Light Emitting Diode) provided in the monitoring unit 7 . Further, for example, the output unit 713 audibly presents detailed information to the user by outputting a voice message from a speaker installed in the monitoring unit 7 or a speaker connected to the monitoring unit 7 .

Information that can be included in the detailed information will be listed below. In this embodiment, the detailed information may include all of the information listed below, or may not include all of the information. That is, the detailed information only needs to include one or more of the plurality of information listed below.

The detailed information may include type information indicating the type of wiring abnormality. In this embodiment, the types of wiring abnormalities include at least two types: parallel arcs and series arcs. That is, in this embodiment, the detection unit 712 can determine whether a parallel arc occurs or not, and whether a series arc occurs, as described above. Therefore, the output unit 713 can present, based on the detection result by the detection unit 712, whether the wiring abnormality is the occurrence of a parallel arc or whether the wiring abnormality is the occurrence of a series arc.

Further, the detailed information may include location information regarding the location where the wiring abnormality occurs. In this embodiment, the location information includes information indicating one or more circuits C1 among the plurality of circuits C1. That is, in this embodiment, the detection unit 712 detects a wiring abnormality in the wiring C11 for each circuit C1. Therefore, the output unit 713 can present, based on the detection result by the detection unit 712, in which circuit C1 (in other words, in which location) the wiring abnormality has occurred.

Further, the detailed information may include device information regarding devices included in the circuit C1. For example, the detection unit 712 can estimate the type and number of devices (for example, electrical devices 23 and 24) included in the circuit C1 from the change in the power level. Therefore, the output unit 713 can present information such as the type and number of devices estimated by the detection unit 712 as device information.

Further, the detailed information may include time information regarding at least one of the occurrence timing and duration of the wiring abnormality. That is, in the present embodiment, the detection unit 712 can detect a wiring abnormality in the wiring C11 in real time based on the current flowing through the circuit C1 measured by the current measuring device 8. Therefore, the output unit 713 presents the timing of occurrence of the wiring abnormality and the duration from the occurrence of the wiring abnormality until the end of the wiring abnormality, for example, by timing using a timer built in the control unit 71. Is possible.

Further, the detailed information may include history information regarding the operation history of at least one of the detection unit 712 and the output unit 713. That is, in this embodiment, whether the detection unit 712 operates or the output unit 713 operates, the time of operation, etc. can be stored in the storage unit 74 as a history. Therefore, the output unit 713 can present the operation history of the detection unit 712 and/or the output unit 713 by reading the history from the storage unit 74.

Further, the detailed information may include current information regarding the waveform of the current flowing through the circuit C1 and used for detection by the detection unit 712. That is, in the present embodiment, the detection unit 712 detects a wiring abnormality in the wiring C11 based on the current flowing through the circuit C1 measured by the current measuring device 8. Therefore, the output unit 713 can present the waveform of the current flowing through the circuit C1 when a wiring abnormality occurs, based on the detection result by the detection unit 712.

In this embodiment, the output unit 713 presents detailed information when the user performs a confirmation work to check the state of the distribution board 1 when any of the switches 2 performs a disconnection operation. In the present disclosure, "when performing the confirmation work" includes the time when the monitoring system 100 directly or indirectly confirms the user's intention to perform the confirmation work. For example, the output unit 713 presents detailed information based on the detection result of the user detection unit 75, which will be described later. That is, when the user detection unit 75 detects an action that is the starting point for the user's confirmation work, the output unit 713 presents detailed information.

Further, the output unit 713 outputs a control signal for controlling the circuit C1 to the circuit C1. That is, the output unit 713 can control each of the plurality of circuits C1. “Controlling the circuit C1” in the present disclosure may include cutting off power supply to the circuit C1, restoring the circuit C1, limiting the current flowing through the circuit C1, and the like. As an example, the output unit 713 can output a control signal to the branch breaker 4 to open a built-in contact in the branch breaker 4, thereby cutting off the power supply to the circuit C1 including the branch breaker 4. It is possible.

In this embodiment, when the detection unit 712 detects a wiring abnormality in the wiring C11, the output unit 713 causes the circuit C1 including the wiring C11 in which the wiring abnormality was detected to cut off the power supply to the circuit C1. outputs a control signal. Here, if an arc occurs in the wiring C11, an electrical fire or the like may occur due to the occurrence of the arc. Therefore, in this embodiment, when a wiring abnormality in the wiring C11 is detected, it is possible to prevent an electrical fire from occurring by cutting off the power supply to the circuit C1.

In this embodiment, power is supplied to the monitoring unit 7 from the primary side of the main breaker 3 even when the main breaker 3 performs a cutoff operation. Therefore, when the system power supply 20 is not out of power, the detection section 712 and the output section 713 are operable. Further, the monitoring unit 7 is supplied with power from the backup power supply 9 when the system power supply 20 is out of power. Therefore, even if the system power supply 20 is out of power, the detection section 712 and the output section 713 can operate. In this embodiment, the backup power supply 9 is provided outside the monitoring unit 7, but the backup power supply 9 may be built into the monitoring unit 7.

The communication unit 72 communicates with the controller 25 and the like installed in the facility 500. The controller 25 controls or monitors equipment compatible with HEMS (Home Energy Management System) (hereinafter referred to as HEMS compatible equipment). In other words, by communicating with the monitoring unit 7, the controller 25 can acquire the instantaneous power and electric energy of each of the plurality of loads (electrical devices 23, 24, etc.) connected to the plurality of branch breakers 4. It is possible to control or monitor HEMS compatible equipment. The controller 25 is arranged outside the distribution board cabinet 10. Here, HEMS-compatible devices include, for example, smart meters, solar power generation devices, power storage devices, fuel cells, electric vehicles, air conditioners, lighting equipment, water heaters, refrigerators, television receivers, and the like. Note that HEMS compatible devices are not limited to these devices.

The communication method between the communication unit 72 and the controller 25 is, for example, a specified low power radio station in the 920 MHz band (a radio station that does not require a license), Wi-Fi (registered trademark), or Bluetooth (registered trademark). It is a standard-based wireless communication using radio waves as a medium. The communication method between the communication unit 72 and the controller 25 may be wired communication based on a communication standard such as a wired LAN (Local Area Network). Further, the communication protocol for communication between the communication unit 72 and the controller 25 is, for example, Ethernet (registered trademark), ECHONET Lite (registered trademark), or the like.

Moreover, as already mentioned, the communication part 72 communicates with the communication part 201 of each switch 2 using a part of the conductive layer of the board|substrate of the current measurement device 8.

The notification unit 73 has a communication function to communicate with the management server 300 and the information terminal 400 via a wide area network 200 such as the Internet. Here, the information terminal 400 is, for example, a terminal carried by a user of the distribution board 1, and is, for example, a smartphone or a tablet computer. Furthermore, the information terminal 400 may be, for example, a desktop or laptop personal computer. Notification unit 73 notifies detailed information to information terminal 400 owned by the user.

As an example, when the detection unit 712 detects a wiring abnormality in the wiring C11, the notification unit 73 transmits a signal containing detailed information read from the storage unit 74 in response to the wiring abnormality in the wiring C11 to the information terminal 400. Send to. The user can obtain detailed information by operating the information terminal 400 to, for example, view email or start an application for the monitoring system 100 installed on the information terminal 400.

The storage unit 74 includes, for example, electrically rewritable nonvolatile memory such as EEPROM (Electrically Erasable Programmable Read-Only Memory), volatile memory such as RAM (Random Access Memory), and the like. The storage unit 74 stores detailed information for each wiring abnormality of the wiring C11 detected by the detection unit 712.

The user detection unit 75 detects an operation that is a starting point for a user to perform a confirmation operation after one of the switches 2 performs a shutoff operation. As an example, the user detection section 75 is an input reception section that is provided in the monitoring unit 7 and receives user operations. When the user detection unit 75 receives the user's operation at the input reception unit, the user detection unit 75 detects the user's operation of the monitoring unit 7 as the starting point for the user to perform the confirmation work.

Further, as an example, the user detection unit 75 may be configured to acquire detection results from one or more of a proximity sensor, an infrared sensor, an acceleration sensor, and a vibration sensor. The one or more sensors described above are attached to the cover or lid of the distribution board 1, for example. Based on the detection results of the one or more sensors, the user detection unit 75 detects the user's action of opening the cover or lid of the distribution board 1 as a starting action for the user to perform the confirmation work.

Furthermore, as an example, the user detection unit 75 may be configured to acquire detection results from a human sensor. The human sensor is a sensor that detects the presence of a person using any one of infrared rays, ultrasonic waves, and electromagnetic waves, and is attached to the distribution board 1. Further, the human sensor may be an image sensor that detects the presence of a person from a captured image. Based on the detection result of the human sensor, the user detection unit 75 detects the movement of the user approaching the distribution board 1 as the movement that becomes the starting point for the user to perform the confirmation work.

Further, when the user is carrying the information terminal 400, the user detection unit 75 detects whether the user approaches the distribution board 1 based on the communication result between the monitoring unit 7 and the information terminal 400 via the notification unit 73. Movement may also be detected. Further, the user detection unit 75 may detect the movement of the user approaching the distribution board 1 when the notification unit 73 receives radio waves emitted by the information terminal 400. In these cases, the user detection unit 75 allows the user to check the movement of the user approaching the distribution board 1 only when the application for the monitoring system 100 installed on the information terminal 400 is running. It may also be detected as a starting action. In addition, the user detection unit 75 may detect an action in which the user starts an application for the monitoring system 100 described above as an action that becomes a starting point for the user to perform the confirmation work.

(3) Operation The operation of the monitoring system 100 of this embodiment will be described below using FIG. 5. In the following description, the user detection unit 75 detects the movement of the user (person) approaching the distribution board 1 as the movement that becomes the starting point for the user to perform the confirmation work, based on the detection result of the human sensor. Assume that Further, in the following, a mode in which detailed information is presented to the user on the distribution board 1 will be described. Detailed information is also output to the information terminal 400.

First, the detection unit 712 detects a wiring abnormality in the wiring C11 for each circuit C1 based on the current flowing through the circuit C1 (S1). When a wiring abnormality in the wiring C11 is detected in any circuit C1 (S2: Yes), the output unit 713 outputs a control signal to the circuit C1 in which the wiring abnormality was detected (S3). Here, the output unit 713 outputs a control signal including a command to open the contact to the switch 2 included in the circuit C1. At this time, the control unit 71 causes the storage unit 74 to store detailed information regarding the wiring abnormality of the wiring C11 (S4).

In the monitoring system 100, a human sensor detects the presence or absence of a person around the distribution board 1 (S5). Then, when the presence of a person is detected by the human sensor (S5: Yes), the user detection unit 75 detects the movement of the user approaching the distribution board 1 as the movement that becomes the starting point for the user to perform the confirmation work. do. When an action that is the starting point for the user's confirmation work is detected, the output unit 713 reads detailed information from the storage unit 74 and presents the read detailed information (S6).

As described above, in this embodiment, when a wiring abnormality occurs in the wiring C11 in the circuit C1 connected to the distribution board 1, the output unit 713 presents detailed information regarding the wiring abnormality. Therefore, the user who has confirmed the detailed information can understand that a wiring abnormality has occurred, and can also take some kind of measure against the wiring abnormality that has occurred. In other words, this embodiment has the advantage of improving usability for the user compared to a case where detailed information regarding wiring abnormalities is not presented.

As an example, assume that the occurrence of a parallel arc is detected as a wiring abnormality in the wiring C11 in one of the circuits C1. In this case, a short circuit current flows in the circuit C1 where the wiring abnormality has occurred, so the switch 2 (for example, the branch breaker 4) performs a breaking operation, thereby cutting off the power supply to the circuit C1.

Here, if the monitoring system does not have the detection unit 712 and the output unit 713 (hereinafter referred to as the “comparative example monitoring system”), the user cannot check detailed information, so the power to the circuit C1 is It may be difficult to understand the cause of the supply cut-off, leading to confusion.

On the other hand, in this embodiment, since the detection unit 712 and the output unit 713 are provided, if there is a wiring abnormality in the wiring C11, detailed information regarding this wiring abnormality is presented to the user. Therefore, in this embodiment, since the user can grasp that a wiring abnormality has occurred, the possibility of user confusion can be reduced compared to the monitoring system of the comparative example.

(4) Modifications The embodiment described above is just one of various embodiments of the present disclosure. The embodiments described above can be modified in various ways depending on the design, etc., as long as the objective of the present disclosure can be achieved. Further, functions similar to those of the monitoring system 100 may be realized by a monitoring method, a (computer) program, a non-temporary recording medium on which the program is recorded, or the like.

A monitoring method according to one embodiment includes a detection process and an output process. The detection process is a process of detecting a wiring abnormality in the wiring C11 included in the circuit C1 connected to the distribution board 1. The output process is a process of outputting according to the detection result of the detection process. In the output process, detailed information regarding the wiring abnormality is presented at least when the wiring abnormality occurs.

A program according to one aspect causes one or more processors to execute the above monitoring method.

Modifications of the above embodiment will be listed below. The modified examples described below can be applied in combination as appropriate.

The monitoring system 100 according to the present disclosure includes, for example, a computer system in the detection unit 712 and the like. A computer system mainly consists of a processor and a memory as hardware. The functions of the monitoring system 100 in the present disclosure are realized by a processor executing a program recorded in the memory of the computer system. The program may be pre-recorded in the memory of the computer system, may be provided through a telecommunications line, or may be recorded on a non-transitory storage medium readable by the computer system, such as a memory card, optical disc, hard disk drive, etc. may be provided. A processor in a computer system is comprised of one or more electronic circuits including semiconductor integrated circuits (ICs) or large scale integrated circuits (LSIs). The integrated circuits such as IC or LSI referred to herein have different names depending on the degree of integration, and include integrated circuits called system LSI, VLSI (Very Large Scale Integration), or ULSI (Ultra Large Scale Integration). Furthermore, an FPGA (Field-Programmable Gate Array), which is programmed after the LSI is manufactured, or a logic device that can reconfigure the connections inside the LSI or reconfigure the circuit sections inside the LSI, may also be used as a processor. Can be done. The plurality of electronic circuits may be integrated into one chip, or may be provided in a distributed manner over a plurality of chips. A plurality of chips may be integrated into one device, or may be distributed and provided in a plurality of devices. The computer system herein includes a microcontroller having one or more processors and one or more memories. Therefore, the microcontroller is also composed of one or more electronic circuits including semiconductor integrated circuits or large-scale integrated circuits.

Furthermore, the fact that multiple functions of the monitoring system 100 are integrated into one housing (monitoring unit 7) is not an essential configuration of the monitoring system 100, and the components of the monitoring system 100 are integrated into multiple housings. They may be provided in a dispersed manner. Furthermore, at least some of the functions of the monitoring system 100, such as the detection unit 712, may be realized by, for example, a cloud (cloud computing). On the contrary, all the functions of the monitoring system 100 may be integrated into one housing (monitoring unit 7) as in the above embodiment.

In the embodiment described above, the output unit 713 may change the presentation mode of the detailed information depending on the content of the detailed information. For example, the output unit 713 lights the light source in red when the wiring abnormality in the wiring C11 is the occurrence of a parallel arc, and lights the light source in orange when the wiring abnormality in the wiring C11 is the occurrence of a series arc. You can.

In the embodiment described above, the output unit 713 may send detailed information to the external system 600. The external system 600 is, for example, a cloud, the controller 25, or the like. Specifically, the output unit 713 may transmit detailed information to the controller 25 via the communication unit 72. Further, the output unit 713 may transmit detailed information to the cloud via the notification unit 73 and the wide area network 200. In this aspect, the external system 600 can collect detailed information as big data, for example, and use it to study trends in the occurrence of wiring abnormalities in the wiring C11 or measures to be taken against wiring abnormalities.

In the embodiment described above, the monitoring unit 7 does not need to include the notification section 73. That is, the monitoring system 100 does not need to have a communication function to communicate with the management server 300 and the information terminal 400 via the wide area network 200 such as the Internet. In this aspect, detailed information is presented to the user only by the distribution board 1.

In the embodiment described above, the monitoring unit 7 does not need to include the user detection section 75. That is, in the above-described embodiment, detailed information may be presented to the user (S6) without detecting a person using the human sensor. In other words, the monitoring system 100 may include an aspect in which detailed information is presented to the user regardless of whether or not a person is detected. In this aspect, detailed information is presented to the user using, for example, the information terminal 400 owned by the user.

In the embodiment described above, each switch 2 may have a function as the detection section 712. In this aspect, the monitoring unit 7 only needs to have a function of collecting detection results from each switch 2 instead of the detection unit 712. That is, the monitoring unit 7 may decide whether or not to operate the output section 713 according to the detection results of each detection section 712 collected from each switch 2.

In the embodiment described above, the output unit 713 may present recovery information including a procedure for recovering from a wiring abnormality in the wiring C11 as detailed information. As an example, if an arc occurs in any of the wirings C11, the output unit 713 may present as recovery information the contact information for the electrical construction company and a request to contact the electrical construction company. The "contact information" here may include, for example, a telephone number, an e-mail address, or, if the electrical construction company has a homepage, the URL (Uniform Resource Locator) of the homepage.

In the embodiment described above, the detection unit 712 may be configured to detect a wiring abnormality in the wiring C11 using, for example, a machine learning classifier. The classifier uses the current measured by the current measuring device 8 as input data for each circuit C1, and outputs the presence or absence of wiring abnormality in the wiring C11. Note that the classifier may be able to perform relearning while the monitoring system 100 is in use.

The classifier may include, for example, a linear classifier such as an SVM (Support Vector Machine), a classifier using a neural network, or a classifier generated by deep learning using a multilayer neural network. When the classifier is a classifier using a trained neural network, the trained neural network includes, for example, CNN (Convolutional Neural Network) or BNN (Bayesian Neural Network). obtain. In this case, the detection unit 712 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).

(summary)
As described above, the monitoring system (100) according to the first aspect includes a detection section (712) and an output section (713). The detection unit (712) detects a wiring abnormality in the wiring (C11) included in the circuit (C1) connected to the distribution board (1). The output unit (713) performs output according to the detection result of the detection unit (712). The output unit (713) presents detailed information regarding the wiring abnormality at least when the wiring abnormality occurs.

According to this aspect, the user of the distribution board (1) can understand that a wiring abnormality has occurred by checking the detailed information, and can also take some action against the wiring abnormality that has occurred. be able to. That is, according to this aspect, there is an advantage that user-friendliness can be improved.

In the monitoring system (100) according to the second aspect, in the first aspect, the detailed information includes type information indicating the type of wiring abnormality.

According to this aspect, there is an advantage that the user of the distribution board (1) can easily understand what kind of wiring abnormality has occurred.

In the monitoring system (100) according to the third aspect, in the second aspect, the types of wiring abnormalities include at least two types: parallel arcs and series arcs.

According to this aspect, there is an advantage that the user of the distribution board (1) can easily understand what kind of wiring abnormality has occurred.

In the monitoring system (100) according to the fourth aspect, in any one of the first to third aspects, the detailed information includes location information regarding the location where the wiring abnormality occurs.

According to this aspect, there is an advantage that the user of the distribution board (1) can easily grasp the location where the wiring abnormality occurs.

In the monitoring system (100) according to the fifth aspect, the number of circuits (C1) is plural in the fourth aspect. The location information includes information indicating one or more circuits (C1) among the plurality of circuits (C1).

According to this aspect, there is an advantage that the user of the distribution board (1) can easily understand in which circuit (C1) a wiring abnormality has occurred.

In the monitoring system (100) according to the sixth aspect, in any one of the first to fifth aspects, the detailed information includes equipment information regarding equipment included in the circuit (C1).

According to this aspect, there is an advantage that the user of the distribution board (1) can easily grasp which device the wiring (C11) is connected to in which an abnormality has occurred.

In the monitoring system (100) according to the seventh aspect, in any one of the first to sixth aspects, the detailed information includes time information regarding at least one of the timing and duration of the wiring abnormality.

According to this aspect, there is an advantage that the user of the distribution board (1) can easily grasp the time period in which the wiring abnormality has occurred.

In the monitoring system (100) according to the eighth aspect, in any one of the first to seventh aspects, the detailed information includes history information regarding the operation history of at least one of the detection unit (712) and the output unit (713). include.

According to this aspect, the user of the distribution board (1) can easily understand how the detection unit (712) and/or the output unit (713) operated in response to wiring abnormalities that occurred in the past. , there is an advantage.

In the monitoring system (100) according to the ninth aspect, in any one of the first to eighth aspects, the detailed information is the waveform of the current flowing through the circuit (C1) and used for detection by the detection unit (712). Contains current information regarding.

According to this aspect, there is an advantage that the user of the distribution board (1) can easily grasp the state of the current flowing through the circuit (C1) when a wiring abnormality occurs.

In the monitoring system (100) according to the tenth aspect, in any one of the first to ninth aspects, the output unit (713) changes the presentation mode of the detailed information depending on the content of the detailed information.

According to this aspect, there is an advantage that the user of the distribution board (1) can easily understand the contents of detailed information.

In the monitoring system (100) according to the eleventh aspect, in any one of the first to tenth aspects, the output unit (713) outputs a control signal for controlling the circuit (C1) to the circuit (C1). do.

According to this aspect, there is an advantage that by controlling the circuit (C1), it is possible to take measures such as preventing the occurrence of electrical fires due to wiring abnormalities.

In the monitoring system (100) according to the twelfth aspect, in any one of the first to eleventh aspects, the output unit (713) transmits detailed information to the external system (600).

According to this aspect, there is an advantage that detailed information can be used in the external system (600).

A monitoring method according to a thirteenth aspect includes a detection process and an output process. The detection process is a process of detecting a wiring abnormality in the wiring (C11) included in the circuit (C1) connected to the distribution board (1). The output process is a process of outputting according to the detection result of the detection process. In the output process, detailed information regarding the wiring abnormality is presented at least when the wiring abnormality occurs.

According to this aspect, the user of the distribution board (1) can understand that a wiring abnormality has occurred by checking the detailed information, and can also take some action against the wiring abnormality that has occurred. be able to. That is, according to this aspect, there is an advantage that user-friendliness can be improved.

The program according to the fourteenth aspect causes one or more processors to execute the monitoring method according to the thirteenth aspect.

According to this aspect, the user of the distribution board (1) can understand that a wiring abnormality has occurred by checking the detailed information, and can also take some action against the wiring abnormality that has occurred. be able to. That is, according to this aspect, there is an advantage that user-friendliness can be improved.

A distribution board (1) according to a fifteenth aspect includes the monitoring system (100) according to any one of the first to twelfth aspects and a distribution board cabinet (10). The distribution board cabinet (10) accommodates the monitoring system (100).

According to this aspect, the user of the distribution board (1) can understand that a wiring abnormality has occurred by checking the detailed information, and can also take some action against the wiring abnormality that has occurred. be able to. That is, according to this aspect, there is an advantage that user-friendliness can be improved.

The configurations according to the second to twelfth aspects are not essential to the monitoring system (100) and can be omitted as appropriate.

1 Distribution board 10 Distribution board cabinet 100 Monitoring system 712 Detection section 713 Output section 600 External system C1 Circuit C11 Wiring

Claims (15)

A monitoring system installed in a distribution board,
a detection unit that detects occurrence of an arc as a wiring abnormality in wiring included in a predetermined circuit;
an output unit that outputs an output according to the detection result of the detection unit,
The predetermined circuit is at least one of a circuit within the distribution board, a circuit between a branch breaker of the distribution board and a load, and a circuit between the branch breaker and a power source,
Further comprising a user detection unit that detects an operation of a user approaching the distribution board,
The output unit presents detailed information regarding the occurrence of the arc when the user detection unit detects an action of the user approaching the distribution board ;
The output unit outputs a control signal for interrupting the predetermined circuit to the predetermined circuit when the arc occurs,
The detailed information includes restoration information including a procedure for restoring the predetermined circuit.
Monitoring system. The detailed information includes type information indicating the type of the arc,
The monitoring system according to claim 1. The types of arcs include at least two types: parallel arcs and series arcs.
The monitoring system according to claim 2. The detailed information includes location information regarding the location where the arc occurs.
The monitoring system according to any one of claims 1 to 3. A plurality of the predetermined circuits are provided,
The location information includes information indicating one or more circuits among the plurality of predetermined circuits.
The monitoring system according to claim 4. The detailed information includes device information regarding devices included in the predetermined circuit.
The monitoring system according to any one of claims 1 to 5. The detailed information includes time information regarding at least one of generation timing and duration of the arc.
The monitoring system according to any one of claims 1 to 6. The detailed information includes history information regarding the operation history of at least one of the detection unit and the output unit,
The monitoring system according to any one of claims 1 to 7. The detailed information includes current information regarding a waveform of a current flowing through the predetermined circuit and used for detection by the detection unit.
The monitoring system according to any one of claims 1 to 8. The output unit changes the presentation mode of the detailed information depending on the content of the detailed information.
The monitoring system according to any one of claims 1 to 9. The output unit outputs a control signal for controlling power transmitted by the predetermined circuit to the predetermined circuit.
The monitoring system according to any one of claims 1 to 10. the output unit transmits the detailed information to an external system;
The monitoring system according to any one of claims 1 to 11. a detection process for detecting the occurrence of an arc as a wiring abnormality in wiring included in a predetermined circuit;
an output process that performs an output according to the detection result of the detection process,
The predetermined circuit is at least one of a circuit within a distribution board, a circuit between a branch breaker of the distribution board and a load, and a circuit between the branch breaker and a power source,
further comprising a user detection process for detecting an operation of a user approaching the distribution board,
In the output processing, when the user detection processing detects the movement of the user approaching the distribution board, detailed information regarding the occurrence of the arc is presented;
The output processing includes outputting a control signal to the predetermined circuit to interrupt the predetermined circuit when the arc occurs;
The detailed information includes restoration information including a procedure for restoring the predetermined circuit.
Monitoring method. A program for causing one or more processors to execute the monitoring method according to claim 13. A monitoring system according to any one of claims 1 to 12,
and a distribution board cabinet that accommodates the monitoring system.
Distribution board.

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