State estimation system, circuit breaker, distribution board, state estimation method, and program

Abstract

To enable coping depending on estimation of a state of an electric path or an estimated state at the time of occurence of power outage.SOLUTION: A state estimation system 1 comprises an acquisition unit, a specification unit, and an estimation unit. The acquisition unit executes acquisition processing for acquiring disaster related information from an external server 60. The disaster related information is information related to occurrence of a natural disaster. The specification unit executes cause specification processing at the time of occurrence of power outage. The cause specification processing is processing that on the basis of a measurement result from a measurement unit 15, specifies a cause of the outage and acquires cause information. The measurement unit 15 is used with breakers (10, 50) lying among electric paths (203a to 203c) between a power system 201 and a user's home load 202. The estimation unit estimates states of the electric paths (203a to 203c) on the basis of the disaster related information and the cause information and executes state estimation processing of acquiring state information on an estimation result.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present disclosure relates to a state estimation system, a breaker, a distribution board, a state estimation method, and a program. More specifically, it relates to a state estimation system, a breaker, a distribution board, a state estimation method, and a program for estimating the state of an electric circuit when a power outage occurs.

Background Art

[0002] Patent Document 1 describes a power outage information notification system that notifies a customer terminal of power outage information regarding an occurred power outage by a server device. The notified power outage information includes the power outage time and the cause of the power outage.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] Power outages include widespread power outages caused by power systems (hereinafter referred to as system power outages) and power outages within a house (hereinafter referred to as in-house power outages) caused by the operation of breakers in individual customer houses (interruption operations that cut off the current in the electric circuit when an abnormality such as overcurrent or leakage occurs in the electric circuit). The power outage cause notification system of Patent Document 1 notifies information such as the cause of the power outage (system power outage information) during a system power outage, and does not notify state information regarding the state of the electric circuit (a state in which an abnormality (interruption cause) such as overcurrent or leakage that causes the breaker to interrupt operates in the electric circuit) during an in-house power outage.

[0005] An object of the present disclosure is to provide a state estimation system, a breaker, a distribution board, a state estimation method, and a program that can enable the estimation of the state of an electric circuit when a power outage occurs, and thus enable countermeasures according to the estimated state.

Means for Solving the Problems

[0006] A state estimation system according to one aspect of this disclosure comprises an acquisition unit, a specification unit, and an estimation unit. The acquisition unit performs an acquisition process. The acquisition process is the process of acquiring disaster-related information from an external server. The disaster-related information is information related to the occurrence of a natural disaster. The specification unit performs a cause identification process when a power outage occurs. The cause identification process is the process of identifying the cause of the power outage and acquiring cause information based on measurement results from a measurement unit. The measurement unit is used in conjunction with a circuit breaker. The circuit breaker is interposed in the circuit between the power grid and the load inside the customer's home. The estimation unit performs a state estimation process. The state estimation process is the process of estimating the state of the circuit based on the disaster-related information and the cause information and acquiring state information related to the estimation result.

[0007] A circuit breaker according to one aspect of this disclosure is interposed in the circuit between the power grid and the load inside the customer's home. The circuit breaker comprises an acquisition unit, a identification unit, and an estimation unit. The acquisition unit performs an acquisition process. The acquisition process is the process of acquiring disaster-related information from an external server. The disaster-related information is information related to the occurrence of a natural disaster. The identification unit performs a cause identification process when a power outage occurs. The cause identification process is the process of identifying the cause of the power outage and acquiring cause information based on measurement results from a measurement unit. The measurement unit is used in conjunction with the circuit breaker. The estimation unit performs a state estimation process. The state estimation process is the process of estimating the state of the circuit based on the disaster-related information and the cause information and acquiring state information related to the estimation result.

[0008] A distribution board according to one aspect of this disclosure includes the aforementioned circuit breaker.

[0009] A state estimation method according to one aspect of this disclosure comprises an acquisition step, a identification step, and an estimation step. The acquisition step performs an acquisition process. The acquisition process is a process of acquiring disaster-related information from an external server. The disaster-related information is information related to the occurrence of a natural disaster. The identification step performs a cause identification process when a power outage occurs. The cause identification process is a process of identifying the cause of the power outage and acquiring cause information based on measurement results from a measurement unit. The measurement unit is used in conjunction with a circuit breaker. The circuit breaker is interposed in the circuit between the power system and the load inside the customer's home. The estimation step performs a state estimation process. The state estimation process is a process of estimating the state of the circuit based on the disaster-related information and the cause information and acquiring state information related to the estimation result.

[0010] A program according to one aspect of this disclosure causes one or more computers to execute the state estimation method. [Effects of the Invention]

[0011] The state estimation system, circuit breaker, distribution board, state estimation method, and program disclosed herein have the effect of enabling the estimation of the state of the electrical circuit and, consequently, taking appropriate action according to the estimated state, when a power outage occurs. [Brief explanation of the drawing]

[0012] [Figure 1] Figure 1 is a block diagram of a power supply system including a state estimation system according to Embodiment 1 of this disclosure. [Figure 2] Figure 2 is a block diagram of the main circuit breaker that constitutes the state estimation system described above. [Figure 3] Figure 3 is a flowchart illustrating the operation of the state estimation system described above. [Figure 4] Figure 4 shows an example of output such as action information from the state estimation system described above. [Figure 5] Figure 5 shows other examples of output such as response information from the same state estimation system. [Figure 6] FIG. 6 is a block diagram of a power supply system including a state estimation system according to Embodiment 2 of the present disclosure. [Figure 7] FIG. 7 is a block diagram of a server constituting the state estimation system described above. [Figure 8] FIG. 8 is a block diagram of a main breaker constituting the state estimation system described above. [Figure 9] FIG. 9 is a diagram showing an output example of countermeasure information and the like by the state estimation system described above. [Figure 10] FIG. 10 is an external view of a distribution board including the main breaker described above. **[Embodiments for Carrying Out the Invention]**

[0013] The present disclosure is not limited to the following embodiments, and various modifications can be made according to the design and the like as long as the effects of the present disclosure can be achieved.

[0014] In the present disclosure, the state estimation system estimates the state of the circuit when a power outage occurs and obtains at least one of state information and countermeasure information.

[0015] In Embodiment 1 of the present disclosure, the state estimation system is composed of one breaker, and one breaker estimates the state of the circuit and obtains state information and the like when a power outage occurs.

[0016] In Embodiment 2, the state estimation system is composed of one or more breakers and a server. The server cooperates with each of the one or more breakers to estimate the state and obtain state information and the like for each of the one or more circuits corresponding to the one or more breakers when a power outage occurs.

[0017] (1) Premises (1-1) Premises Common to Embodiments 1 and 2 First, referring appropriately to FIGS. 1 to 10, the premises common to the state estimation system 1 according to Embodiments 1 and 2 of the present disclosure will be described.

[0018] As shown in Figures 1 and 6, the state estimation system 1 according to embodiments 1 and 2 of this disclosure identifies the cause of a power outage based on the measurement results of a measurement unit 15 used in conjunction with the circuit breakers (10, 50) interposed in the electrical circuit (203a to 203c) between the power grid 201 and the load 202 inside the customer's home. Then, based on the identified cause of the power outage and disaster-related information from an external server 60, the system estimates the state of the electrical circuit (203a to 203c).

[0019] (1-1-1) Breaker The circuit breaker (10,50) is, for example, the main circuit breaker 10 that makes up the distribution board 100 as shown in Figure 10. The distribution board 100 will be described later.

[0020] The main circuit breaker 10 has a detection function for detecting overcurrent, leakage current and earthquakes, a tripping function that interrupts the current in the circuits (203a to 203c) when an overcurrent or the like is detected (it enters a tripped state), and a communication function that communicates with at least terminal 40.

[0021] The main circuit breaker 10 will trip if an overcurrent or ground fault occurs in the second circuit 203b or the third circuit 203c, or if an earthquake occurs. When the main circuit breaker 10 trips, the power supply to the load 202 is stopped.

[0022] The main circuit breaker 10 is connected to the customer's terminal 40 for communication purposes, for example, in the event of a power outage. That is, the main circuit breaker 10 becomes capable of communicating with the terminal 40 via short-range wireless communication in response to a connection operation performed by the customer in the event of a power outage. Alternatively, the main circuit breaker 10 may automatically attempt to establish a short-range wireless connection with the terminal 40 in the event of a power outage. Alternatively, the main circuit breaker 10 may be connected to the terminal 40 for constant communication purposes, for example, via the measurement unit 15, the second network 302, the gateway (GW) 303, and the first network 301.

[0023] The main circuit breaker 10 includes a processor (CPU, MPU, etc.), memory (semiconductor memory, SSD, etc.), and a communication module (none of which are shown in the figures). Various types of data and programs are stored in the memory, and the processor executes these programs using the data, thereby realizing the detection and shutdown functions described above. In the following, the processor and memory that realize these various functions may be referred to as a "computer."

[0024] The communication module of the main circuit breaker 10 implements the above-mentioned communication function. Communication between the main circuit breaker 10 and the terminal 40 is typically short-range wireless communication, and the communication module implements at least short-range wireless communication functionality.

[0025] The main circuit breaker 10 may have input devices such as a touch panel or a keyboard. The main circuit breaker 10 may also have output devices such as a display or a speaker.

[0026] The distribution board 100, for example as shown in Figure 10, includes a main circuit breaker 10, one or more branch circuit breakers 50, and a measurement unit 15. The main circuit breaker 10 is provided with a switch (also called a handle) 10A for opening and closing contacts (described later), and similar switches are provided on the branch circuit breakers 50. The measurement unit 15 has a connection key 15A for receiving connection operations (described later). The measurement unit 15 may also have a display 15B for displaying information such as measurement results.

[0027] However, the breaker may be, for example, a branch breaker 50 that makes up the distribution board 100. Alternatively, the breaker may be, for example, a limiter (not shown) that makes up the distribution board 100, or it may not even be a component of the distribution board 100. In other words, the type of breaker does not matter as long as it is interposed in the circuit (203a~203c) between the power system 201 and the load 202 and interrupts the current in the circuit (203a~203c) in response to the occurrence of overcurrent, etc.

[0028] (1-1-2) Load Load 202 is a household electrical appliance that operates on power from the power grid 201. Load 202 is preferably an IoT device such as a consumer electronics appliance. Such a load 202 can be connected to the second network 302 (described later) (Embodiment 2: see Figure 6). However, Load 202 may be an electrical appliance that does not have a connection function to the second network 302 (Embodiment 1: see Figure 1).

[0029] (1-1-3) Electrical circuit The electrical circuits (203a to 203c) include the first circuit 203a, the second circuit 203b, and the third circuit 203c. The first circuit 203a is the circuit on the power system 201 side (the primary side of the main circuit breaker 10) relative to the breaker (main circuit breaker 10). The second circuit 203b is the circuit on the load 202 side (the secondary side of the main circuit breaker 10) relative to the breaker (main circuit breaker 10). The third circuit 203c is the circuit on the load 202 side (the secondary side of the branch circuit breaker 50) relative to the branch circuit breaker 50.

[0030] (1-1-4) Terminal The above-mentioned customer can use terminal 40. Use includes, for example, viewing information displayed on the screen or outputting audio from the speaker, inputting information via an input device such as a touch panel, etc. Terminal 40 is capable of short-range wireless communication with the main circuit breaker 10.

[0031] Terminal 40 is, for example, a mobile device such as a smartphone or tablet, but it may also be a stationary device such as a desktop PC (Personal Computer). Mobile devices are carried by the customer. Stationary devices are installed in the customer's home.

[0032] The terminal 40 includes a processor and memory (computer), a communication module that enables at least short-range wireless communication, an input device such as a touch panel, and an output device such as a display.

[0033] (1-2) Prerequisites for Embodiment 2 Next, referring to Figure 6, we will explain the prerequisites specific to the state estimation system 1 according to Embodiment 2.

[0034] In Embodiment 2, each of the one or more distribution boards 100 is connected to the server 30 so as to be able to communicate via the first network 301, GW 303, and second network 302 (all described later).

[0035] (1-2-1) Server Server 30 works in cooperation with one or more distribution boards 100 to realize the state estimation system 1. For each of the one or more distribution boards 100, Server 30 receives the measurement results from the measurement unit 15, estimates the state of the electrical circuits (203a to 203c) (described later), and acquires at least one of the state information and the action information (both described later). Then, Server 30 provides at least one of the estimated information and the action information to each of the one or more terminals 40 corresponding to the one or more distribution boards 100.

[0036] Server 30 includes a processor and memory (computer), and a communication module that enables communication via the first network 301.

[0037] (1-2-2) Network Server 30 is connected to at least one of the customer's and supporter's terminals 40 (described later) via the first network 301, enabling communication. The first network 301 is, for example, a wide-area network such as the internet or a telecommunications network.

[0038] On the other hand, the network to which load 202 is connected is the second network 302. The second network is, for example, a PLC (Power Line Communications) network that communicates via the electrical circuitry within the house. The second network 302 is connected to the first network 301 via GW303 so as to be able to communicate (Embodiment 2).

[0039] More specifically, in Embodiment 2, since the communication protocol of the first network (Internet) to which the server 30 is connected and the communication protocol of the second network (PLC network) to which the main circuit breaker 10 is connected are different, a GW303 is interposed between the first network and the second network to convert between the two protocols.

[0040] In addition to such protocol conversion, GW303 may also perform processing related to various IoT devices connected to the second network 302. Related processing includes, for example, collecting device information about various IoT devices and providing it to the server 30.

[0041] In Embodiment 2, the communication module of the measurement unit 15 (described later) has two types of communication functions: short-range wireless communication and communication via the second network 302. The communication module of the main circuit breaker 10 further realizes the communication function via the second network 302 by performing short-range wireless communication with the communication module of the measurement unit 15.

[0042] However, the communication module of the main circuit breaker 10 may independently implement the communication function via the second network 302 without going through the communication module of the measurement unit 15. Also, the communication module of the main circuit breaker 10 may independently implement the communication function via the first network 301 (described later) without going through the communication module of the terminal 40.

[0043] (1-2-3) Customer terminal In addition to short-range wireless communication with the main circuit breaker 10, the customer's terminal 40 can also communicate with the server 30 via the first network 301. The communication module of the terminal 40 further enables this communication function via the first network 301 in addition to short-range wireless communication.

[0044] (1-2-4) Supporter's terminal When dealing with a state estimated by the state estimation system 1, the customer can receive assistance from a supporter (e.g., a vendor: described later). The supporter also uses a terminal 40. The supporter's terminal 40 is usually connected to the server 30 via the first network 301 for communication. However, the supporter's terminal 40 may also perform short-range wireless communication with the main circuit breaker 10.

[0045] The supporter's terminal 40 includes a processor and memory (computer), a communication module that enables communication via at least the first network 301, an input device such as a keyboard, and an output device such as a display.

[0046] (2) Main part Next, the main components of the state estimation system 1 of Embodiments 1 and 2 will be described.

[0047] The state estimation system 1 according to embodiments 1 and 2 of this disclosure is as shown in Figures 1 and 6, It comprises an acquisition unit 121, a identification unit 122, and an estimation unit 123.

[0048] (2-1) Acquisition unit and acquisition process The acquisition unit 121 executes an acquisition process. The acquisition process is the process of acquiring disaster-related information from the external server 60. The acquisition process is executed, for example, in response to a power outage, but it may also be executed periodically or irregularly.

[0049] External servers 60 include, for example, the Japan Meteorological Agency's servers or the servers of power companies operating the power grid 201, but are not limited to these.

[0050] (2-1-1) Disaster-related information: Disaster occurrence information, weather information, etc. Disaster-related information refers to information related to natural disasters. This includes, for example, disaster occurrence information regarding the occurrence of natural disasters, and weather information regarding weather conditions.

[0051] Disaster-related information is usually based on observations, but it may also be based on predictions (forecasts). Observation-based information includes, for example, earthquake early warnings based on seismic wave observations, and earthquake information (magnitude and extent of earthquakes, etc.) based on observation results from various locations. Prediction-based information includes, for example, warnings and advisories (heavy rain warnings, lightning advisories, etc.) based on predictions using observation results from various locations, statistical information, and weather prediction models, but also includes weather information other than warnings and advisories (weather forecasts). Predictions are usually calculated, but they may also include human predictions.

[0052] In Embodiments 1 and 2, disaster-related information is acquired periodically (for example, every hour), but it may also be acquired irregularly in response to human operation, or acquired when a power outage occurs (for example, actively acquired in response to a power outage, or passively acquired via push notifications, etc.).

[0053] (2-1-1a) Other examples of disaster-related information: System outage information Furthermore, disaster-related information may also include, for example, grid outage information provided by power companies. Grid outage information refers to information about grid outages. This information may include, for example, information about the cause of the grid outage, the extent of the outage, the time of power restoration, etc.

[0054] However, some of the power outage information (for example, information indicating the occurrence of a power outage) may be acquired within the state estimation system 1 based on the measurement results of the measurement unit 15, as described later.

[0055] (2-2) Identification part and cause identification process The identification unit 122 performs cause identification processing when a power outage occurs. Cause identification processing is the process of identifying the cause of the power outage and acquiring cause information based on the measurement results from the measurement unit 15.

[0056] (2-2-1) Cause Information Cause information refers to information that identifies the cause of a power outage. Cause information includes information about the cause of the power outage.

[0057] (2-2-1a) Identification of the cause of the interruption: Information on the cause of the interruption The tripping cause information refers to information indicating the cause of the tripping operation of the circuit breaker (10, 50). For example, the tripping cause information indicates whether the cause of the tripping was overcurrent, ground fault, or earthquake. Note that overcurrent may be classified into three types, for example, overcurrent due to overload, overcurrent due to short circuit, and overcurrent due to lightning (lightning surge).

[0058] In the cause identification process, for example, based on the measurement results from the measurement unit 15 (e.g., current value from the ammeter and acceleration value from the accelerometer: described later), it is determined whether the cause of the interruption is overcurrent, leakage current, or earthquake (in other words, whether the interruption is overcurrent interruption, leakage current interruption, or earthquake interruption), and interruption cause information indicating the determination result is obtained.

[0059] (2-2-1b) Identifying whether it is a system outage or an in-house outage: Information on the cause of the outage The cause information may further include power outage cause information. Power outage cause information is information indicating whether the power outage that occurred was a grid outage or an in-house outage. For example, if the measurement unit 15 includes other measuring instruments for detecting grid outages, the cause identification process first identifies whether the power outage that occurred was a grid outage or an in-house outage based on the measured values ​​of the other measuring instruments (for example, the power value of a power meter: described later), and the power outage cause information is obtained.

[0060] Furthermore, if the power outage is an internal power outage, the cause of the circuit breaker (10, 50) tripping is identified from one or more of the above tripping causes, and the tripping cause information is obtained.

[0061] However, information on the cause of the power outage does not necessarily have to be obtained within the state estimation system 1; for example, it may be included in disaster-related information provided by an external server 60.

[0062] (2-2-1c) Identifying whether the issue is catastrophic or non-catastrophic: Root cause information The cause information in Embodiments 1 and 2 further includes root cause information. Root cause information is information indicating whether the root cause of the power outage is a natural disaster or not. For example, root cause information indicates whether the disaster attribute of the interruption cause or power outage cause is catastrophic or non-catastrophic.

[0063] The identification unit 122 performs a disaster attribute determination process to determine whether the disaster attribute is hazardous or non-hazardous, based on the disaster-related information acquired by the acquisition unit 121, and acquires root cause information.

[0064] The measurement unit 15 is used in conjunction with the circuit breaker. The circuit breaker is usually the main circuit breaker 10, but it may also be one or more branch circuit breakers 50 (hereinafter simply referred to as "circuit breaker (10, 50)"). The circuit breakers (10, 50) are interposed in the circuit between the power system 201 and the load 202 inside the customer's house. The circuit includes the first circuit 203a, the second circuit 203b, and the third circuit 203c (hereinafter simply referred to as "circuit (203a~203c)").

[0065] (2-3) Estimation unit and state estimation process The estimation unit 123 performs state estimation processing. State estimation processing is a process that estimates the state of the electrical circuits (203a~203c) based on disaster-related information and cause information, and obtains state information related to the estimation results.

[0066] The estimated state of the electrical circuit (203a~203c) is one of four or more states, including, for example, a non-hazardous leakage state and a hazardous leakage state, as well as a non-hazardous overcurrent state and a hazardous overcurrent state.

[0067] A non-disaster-related electrical leakage condition refers to a state in which, if a reset operation is performed without any countermeasures, an electrical leakage (non-disaster-related electrical leakage) may occur due to a cause other than a natural disaster (a cause specific to the house). A reset operation is the operation to reset the circuit breaker (10, 50) from the tripped state, for example, the operation of switch 10A shown in Figure 10.

[0068] A disaster-induced overcurrent condition refers to a state in which, due to a natural disaster, there is a high probability that damage has occurred to the electrical circuits in the area, including inside homes, and if restoration operations are performed without taking any countermeasures, a short circuit (disaster-induced short circuit) may occur inside the home.

[0069] A non-disaster-related overcurrent condition refers to a state in which, if a reset operation is performed without any countermeasures, an overcurrent (non-disaster-related overcurrent) may occur due to a cause other than a natural disaster (a cause specific to the house).

[0070] A disaster-induced overcurrent condition refers to a state in which, due to a natural disaster, there is a high probability that damage has occurred to the electrical circuits in the area, including inside homes, and if restoration operations are performed without taking any countermeasures, an overcurrent (disaster-induced overcurrent) may occur inside the home.

[0071] (2-3-1) Status Information Status information refers to information about the state of the electrical circuit (203a~203c). Status information includes, for example, the cause of interruption information as described above, status type information indicating one of the four or more states mentioned above, and disaster attribute information (described later) indicating whether the cause of interruption is catastrophic or non-catastrophic. In addition, status information may further include interruption location information that identifies the location of the interruption in the electrical circuit (203a~203c).

[0072] (2-3-2) How to obtain status information For example, a set of pairs of pair information (a pair of disaster-related information and a blockage cause information) and state information (a pair of the first pair information and the first state information, a pair of the second pair information and the second state information, etc.) is stored in memory. The estimation unit 123 identifies the pair information from the group of pair information (first pair information, second pair information, etc.) stored in memory that is closest to the acquired pair information, which is a pair of disaster-related information acquired by the acquisition unit 121 and a blockage cause information acquired by the identification unit 122. Then, the estimation unit 123 acquires the corresponding action information from the group of action information (first action information, second action information, etc.) stored in memory that is paired with the identified pair information.

[0073] For example, if the set of set information (first set information, second set information, etc.) stored in memory is closest to the acquired set information, then the second state information that corresponds to that second set information will be acquired.

[0074] (2-4) Main advantages of Embodiments 1 and 2 As described above, in these embodiments 1 and 2, when a power outage occurs, it is possible to estimate the state of the electrical circuits (203a to 203c) using disaster-related information from the external server 60 and cause information based on the measurement results of the measurement unit 15. Estimating the state of the electrical circuits (203a to 203c) could, for example, be an estimation of whether the cause of the power outage is damage or other in an external electrical circuit (203a), or whether the cause of the interruption is leakage or other in an internal electrical circuit (203b, 203c), or it could be an estimation of which type of interruption is occurring in which internal electrical circuit, or it could be an estimation of whether the root cause of the interruption is a disaster or not. In turn, it becomes possible to take appropriate action according to the state estimated in this way.

[0075] (3)Details Next, we will describe the details of the state estimation system 1 in Embodiments 1 and 2.

[0076] (3-1) Breaker (3-1-1) Main circuit breaker In Embodiments 1 and 2, the main circuit breaker 10 detects the occurrence of overcurrent, leakage current, and earthquake on the secondary side of the main circuit breaker 10 itself, based on the current value and acceleration value from the measurement results of the measurement unit 15 as described above, and trips.

[0077] More specifically, the processing unit 12, described later, determines whether or not an overcurrent or the like has occurred based on the measurement results of the measurement unit 15. If it determines that an overcurrent or the like has occurred, the processing unit 12 may open the contacts between the first circuit 203a and the second circuit 203b via a switching mechanism (not shown) that opens and closes the contacts, and a drive circuit (not shown) that drives the switching mechanism, thereby causing the main circuit breaker 10 to trip.

[0078] However, the main circuit breaker 10 is not limited to the electronic type circuit breaker described above; it may also be a thermal or electromagnetic type circuit breaker that uses a bimetallic strip or electromagnetic coil to transition to a tripped state (switch 10A is in the off state). In this case, the main circuit breaker 10 is equipped with a sensor that detects whether switch 10A is on or off, and the processing unit 12 determines whether or not it is in a tripped state based on the detection result of the sensor.

[0079] (3-1-2) Branch circuit breaker Based on the second current value, the branch circuit breaker 50 detects the occurrence of an overcurrent on its own secondary side and trips.

[0080] (3-2) Measurement Unit The measurement unit 15 includes one or more measuring instruments for detecting the cause of the interruption.

[0081] (3-2-1) Cause of interruption The cause of tripping refers to a phenomenon that causes the circuit breaker (10, 50) to perform a tripping action that interrupts the current in the circuit (203a~203c) (for example, physical phenomena occurring in the circuit such as overcurrent or leakage current, and natural phenomena occurring over a wide area such as earthquakes).

[0082] The cause of the interruption is, for example, one or more of the following: overcurrent, leakage current, and earthquake. The overcurrent preferably includes one or more of the following: overcurrent due to overload, overcurrent due to short circuit, and overcurrent due to lightning (lightning surge).

[0083] (3-2-2) One or more measuring instruments In embodiments 1 and 2, one or more measuring instruments are an ammeter for detecting at least one of overcurrent and leakage current, and an accelerometer for detecting earthquakes. Detection means, for example, detecting overcurrent and leakage current based on the measurement result (current value) of the ammeter, or detecting earthquakes based on the measurement result (acceleration value) of the accelerometer.

[0084] However, one or more measuring instruments may be various sensors that detect the various causes of interruption themselves (for example, one or more of an overcurrent sensor, a leakage sensor, and an earthquake sensor).

[0085] One or more measuring instruments may include, for example, an overcurrent sensor for detecting overcurrents, a leakage current sensor for detecting leakage currents, and an earthquake sensor for detecting earthquakes. The overcurrent sensor and the leakage current sensor are each implemented with dedicated ammeters, but they can also be implemented with a single ammeter.

[0086] (3-2-2a) Embodiment 1: Ammeter and accelerometer One or more measuring instruments in Embodiment 1 include an ammeter and an accelerometer. The ammeter is for detecting overcurrent and leakage current on the secondary side of the main breaker 10 (second circuit 203b and second circuit 203c) and is installed in the second circuit 203b. The accelerometer is for detecting earthquakes and is installed in the distribution board 100.

[0087] (3-2-2b) Embodiment 2: First ammeter, second ammeter, and accelerometer The one or more measuring instruments in Embodiment 2 include a first ammeter, one or more second ammeters, and an accelerometer. The first ammeter is for detecting overcurrent and leakage current on the secondary side (second circuit 203b and second circuit 203c) of the main breaker 10 and is installed in the second circuit 203b. The one or more second ammeters are for detecting overcurrent and leakage current on the secondary side (second circuit 203c) of each of the one or more branch breakers 50 and are installed in one or more third circuits 203c. The accelerometer is for detecting earthquakes and is installed in the distribution board 100.

[0088] (3-3) Measurement results The measurement results include one or more measured values ​​corresponding to one or more measuring instruments.

[0089] In Embodiment 1, one or more measured values ​​are, for example, a current value corresponding to an ammeter and an acceleration value corresponding to an accelerometer.

[0090] In Embodiment 2, one or more measured values ​​are, for example, a first current value corresponding to a first ammeter, one or more second current values ​​corresponding to one or more second ammeters, and an acceleration value corresponding to an accelerometer.

[0091] (3-4) Circuit breaker and interruption operation The circuit breaker (10, 50) performs a tripping operation when it detects one or more tripping causes based on one or more measured values ​​from the measurement unit 15.

[0092] A tripping operation is the action of interrupting the current in the electrical circuit (203a~203c). The causes of tripping include one or more of the following: overcurrent, ground fault, and earthquake.

[0093] The power outages in Embodiments 1 and 2 are primarily power outages within the home caused by the tripping operation of such circuit breakers (10, 50). The cause information acquired by the identification unit 122 includes tripping cause information that identifies which of one or more tripping causes caused the tripping operation.

[0094] (3-5) Further advantages of Embodiments 1 and 2 This makes it possible to estimate the cause of the power outage in the event of a power failure inside the house (whether the abnormality occurring in the electrical circuit inside the house (203a~203c) is due to overcurrent, leakage current, or earthquake).

[0095] (3-6) Other measuring instruments: Method for obtaining information on the cause of power outages As described above, the measurement unit 15 of Embodiments 1 and 2 further includes other measuring instruments for detecting grid failures. These other measuring instruments include, for example, a power meter on the primary side of the main circuit breaker 10, and grid failures are detected based on the power values ​​of such a power meter.

[0096] The identification unit 122 further identifies whether the power outage is a system outage or an in-house outage based on the measured values ​​of the other measuring instruments mentioned above, and obtains information on the cause of the power outage.

[0097] (3-6-1) Other methods for obtaining information on the cause of power outages However, as mentioned above, the information on the cause of the power outage may already be included in the disaster-related information provided by, for example, the external server 60. In that case, the identification unit 122 will acquire the information on the cause of the power outage based on the disaster-related information acquired by the acquisition unit 121.

[0098] Thus, the estimation of the state of the electrical circuits (203a~203c) includes the estimation of whether it is a system outage or an in-house outage. This makes it possible to estimate whether the occurring power outage is a system outage (for example, a state in which no current is flowing through the circuit (first circuit 203a) on the primary side (outside the house) of the main breaker 10) or an in-house outage (for example, a power outage caused by the tripping operation of the main breaker 10: a state in which current is flowing through the circuit outside the house (first circuit 203a), but no current is flowing through the circuits inside the house (second circuit 203b, third circuit 203c)).

[0099] (3-7) Natural disasters and disaster-related information In embodiments 1 and 2, the natural disaster includes at least one of earthquakes, lightning, heavy rain, and floods. The acquisition unit 121 acquires disaster-related information from the external server 60 related to the occurrence of earthquakes, lightning, heavy rain, and floods.

[0100] By acquiring such disaster-related information, the acquisition unit 121 allows the estimation unit 123 to estimate the state of the electrical circuits (203a to 203c) in more detail. For example, it can determine whether the natural disaster causing the power outage is an earthquake, lightning, heavy rain, or flood, enabling appropriate countermeasures based on the type of natural disaster.

[0101] (3-8) Handling unit and output unit The state estimation system 1 further comprises a response unit 124 and an output unit 13.

[0102] (3-8-1) Response section and response information The response unit 124 acquires response information. Response information is information that supports responses according to the state estimated by the estimation unit 123 (such as the cause of the interruption and the disaster attributes). Response information includes, for example, response information for a system power outage and response information for a power outage within a house. Furthermore, response information for a power outage within a house includes, for example, response information for a non-disaster-related leakage current state, a non-disaster-related overcurrent state, a disaster-related leakage current state, and a disaster-related overcurrent state.

[0103] (3-8-1a) Information on how to deal with system outages / household power outages In the event of a system outage, the response unit 124 may acquire response information indicating that it will wait until power is restored to the power system 201. In the event of an in-house power outage, response information corresponding to the cause of the outage will be acquired.

[0104] (3-8-1b) Different response information depending on the disaster type The response unit 124 may acquire different response information depending on whether the interruption is due to a disaster or not, even if the cause of the interruption is the same.

[0105] (3-8-1bA) Information on dealing with non-disaster-related disruptions Specifically, in the case of a non-disaster-related tripping, the response unit 124 acquires response information, including operational information related to the reset operation. In this case, different operational information may be acquired depending on the cause of the tripping (e.g., operational information for ground faults, operational information for overcurrents, etc.). The party to whom repairs should be requested may also differ depending on the cause of the tripping (for example, a ground fault repair company in the case of a ground fault, and a general electrical contractor in the case of a non-ground fault).

[0106] (3-8-1bB) Information on dealing with disaster-related disruptions In contrast, in the case of a disaster-related shutdown, the response unit 124 may obtain response information indicating that it will refrain from performing a restoration operation and request repairs from a contractor.

[0107] (3-8-1c) How to obtain countermeasure information For example, a set of pairs of state information and action information is stored in memory, and the action unit 124 retrieves the action information that corresponds to the state information acquired by the estimation unit 123 from memory.

[0108] (3-8-2) Output targets of the output section: status information and action information The output unit 13 outputs at least one of the state information acquired by the estimation unit 123 and the countermeasure information acquired by the countermeasure unit 124.

[0109] In embodiments 1 and 2, the output unit 13 usually outputs both status information and action information, but it may output only one of them.

[0110] (3-8-2a) Output method: Transmission or display The output from the output unit 13 is either a transmission or a display. The output is, for example, a transmission to the terminal 40, or a display on the display 15B of the distribution board 100 (measurement unit 15).

[0111] By outputting this type of response information, it is possible to support appropriate responses according to the condition of the electrical circuits (203a to 203c) (responses according to various causes of interruption, appropriate responses in the event of a natural disaster, etc.).

[0112] (3-8-2b) Example of sending to a terminal The output unit 13 transmits at least one of the status information and the action information to at least one of the customer's and the support worker's terminals 40. The support worker assists the customer in dealing with the power outage.

[0113] In Embodiment 1, the output unit 13 transmits status information and action information to the customer's terminal 40. In Embodiment 2, the output unit 13 transmits status information and action information to at least one of the customer's terminal 40 and the supporter's terminal 40.

[0114] In this way, by transmitting at least one of the status information and the action information to the terminal 40 of at least one of the customer and the supporter, it becomes possible for the customer or the supporter to take action against the power outage in the home.

[0115] (3-9) Disaster attribute information The status information in Embodiments 1 and 2 further includes disaster attribute information. Disaster attribute information indicates whether the root cause of the power outage is a disaster-related power outage caused by a natural disaster or a non-disaster-related power outage not caused by a natural disaster. The power outage here is, for example, a power outage within a house caused by a circuit breaker in response to an overcurrent or leakage current, but it may also be a power outage within a house caused by an earthquake or a grid outage.

[0116] In particular, when the cause of the interruption is identified as an overcurrent or ground fault based on the interruption cause information, it is preferable that the status information includes disaster attribute information.

[0117] The response unit 124 acquires different response information depending on whether the disaster attribute information included in the status information indicates a disaster-related power outage or a non-disaster-related power outage.

[0118] (3-9-1) Disaster attribute determination process In Embodiments 1 and 2, the handling unit 124 performs disaster attribute determination processing. Disaster attribute determination processing is the process of determining whether the disaster attribute information included in the status information indicates a disaster or a non-disaster power outage.

[0119] In this way, by obtaining different support information depending on whether the power outage is due to a disaster or not, it becomes possible to provide support for appropriate responses to natural disasters (for example, measures that can prevent secondary disasters such as electrical fires) when the root cause of the power outage is a natural disaster.

[0120] (3-9-2) Information on dealing with disaster-related power outages: Disaster response information The response unit 124 acquires disaster response information if the disaster attribute information included in the status information indicates a disaster-related power outage. The disaster response information includes at least one of warning information and recommendation information. The warning information is information that advises against performing restoration operations. The recommendation information is information that advises performing at least one of inspection and repair related to the electrical circuits (203a~203c).

[0121] Thus, for a catastrophic power outage, by obtaining disaster response information including warning information or recommended information, it is possible to provide support for appropriate responses to natural disasters. For example, in the case of an in-house power outage caused by an earthquake, by warning against performing a restoration operation, it is possible to avoid the occurrence of secondary disasters such as electrical fires due to power restoration. In the case of an in-house power outage caused by heavy rain (where the electrical circuits (203b, 203c) in the house are tripped due to leakage), by recommending an inspection request to a contractor, it is possible to avoid electric shock and the like. In the case of an in-house power outage caused by reasons other than natural disasters, by guiding the procedure for the restoration operation, it is possible to support the customer's own response.

[0122] (3-9-2a) Examples of supporters: Contractors The supporter is a contractor related to the electrical circuits (203a to 203c). The contractor is, for example, an electrical contractor who performs work related to the electrical circuits (203a to 203c). Alternatively, the contractor may be an electric utility such as an electric power company that manages the power system 201, a repair contractor who repairs the load 202 (electrical equipment such as home appliances), a management contractor who manages the customer's house, or the like.

[0123] When the disaster attribute information included in the status information indicates a catastrophic power outage, the response unit 124 and the output unit 13 perform the following operations. That is, the response unit 124 obtains disaster response information for contractors including request information for requesting at least one of inspection and repair related to the electrical circuits (203a to 203c), and warning information indicating that the customer should refrain from performing a restoration operation to return the breaker (10, 50) from the off state to the on state, and obtains customer-oriented disaster response information including at least one of notification information indicating that the response request information for contractors should be transmitted.

[0124] The output unit 13 transmits the contractor-oriented response information thus obtained by the response unit 124 to the terminal 40 of the contractor and transmits the customer-oriented response information to the terminal 40 of the customer.

[0125] In this way, during a power outage caused by a disaster, the system automatically requests an inspection from a service provider, warns customers to refrain from attempting to restore power, and notifies them of the request to the service provider, thereby supporting customers in taking appropriate action with the assistance of the service provider.

[0126] (3-9-3) Information on dealing with non-disaster power outages: Disaster response information If the disaster attribute information included in the status information indicates a non-disaster-related power outage, the response unit 124 and the output unit 13 perform the following actions: The response unit 124 acquires non-disaster response information. The non-disaster response information includes procedure information. Procedure information refers to information regarding the procedure for the restoration operation. Note that the procedure for the restoration operation may differ depending on the cause of the power outage.

[0127] The output unit 13 then transmits the non-disaster response information acquired by the response unit 124 to the customer's terminal 40.

[0128] In this way, during non-disaster-related power outages, notifying customers of the restoration procedure helps them to take appropriate action themselves.

[0129] (3-10) Backup power supply The state estimation system 1 further comprises a power supply unit 14. The power supply unit 14 supplies power to at least the main circuit breaker 10 during a power outage. The power supply unit 14 also normally supplies power to the measurement unit 15.

[0130] The power supply unit 14 is typically a battery. The battery may be disposable, for example, but it may also be rechargeable. In embodiments 1 and 2, the power supply unit 14 is separate from the main circuit breaker 10 and is installed in the distribution board 100. However, the power supply unit 14 may be built into the main circuit breaker 10, or it may be built into an internal unit other than the main circuit breaker 10.

[0131] Alternatively, the power supply unit 14 may be, for example, a private power generation system that operates at least during grid outages.

[0132] (3-11) Connection between the measurement unit and the circuit breaker In embodiments 1 and 2, the measurement unit 15 is a separate, dedicated unit from the main circuit breaker 10 and is constantly connected to the breaker (main circuit breaker 10) for communication. In embodiments 1 and 2, the connection between the measurement unit 15 and the main circuit breaker 10 is made by short-range wireless communication, but a wired connection may also be used.

[0133] However, some components of the measurement unit 15 (other than the second ammeter) may be components of the main circuit breaker 10. For example, at least one of the first ammeter and the accelerometer may be further incorporated into the main circuit breaker 10.

[0134] Alternatively, the measurement unit 15 may be located in an internal component of the distribution board 100 other than the main circuit breaker 10 (for example, a limiter), or it may be located outside the distribution board 100. The location of the measurement unit 15 is irrelevant as long as the measurement results of the measurement unit 15 can be transferred to the processing unit 12 of the main circuit breaker 10.

[0135] (4) Embodiment 1 Next, the state estimation system 1 according to Embodiment 1 of this disclosure will be described. Note that explanations of previously mentioned matters have been omitted or simplified.

[0136] As shown in Figure 1, the state estimation system 1 according to Embodiment 1 of this disclosure consists of a single distribution board 100. The distribution board 100 includes a main circuit breaker 10, one or more branch circuit breakers 50, a measurement unit 15, and a power supply unit 14. The main circuit breaker 10 is connected to an external server 60 and a terminal 40 via the measurement unit 15, a second network 302, a GW 303, and a first network 301, enabling communication (for example, timely connection or always-on connection).

[0137] As shown in Figure 2, the main circuit breaker 10 includes a reception unit 11, a processing unit 12, and an output unit 13. The processing unit 12 includes an acquisition unit 121, a identification unit 122, an estimation unit 123, and a handling unit 124.

[0138] The reception unit 11 receives various operations and various types of information. Various operations include, for example, connection operations. Connection operations are received via the connection key 15A. Various types of information include, for example, measurement results from the measurement unit 15 and disaster-related information from the external server 60. Information such as measurement results is received via the communication module.

[0139] The processing unit 12 performs various processes. These various processes include, for example, the acquisition process of the acquisition unit 121, the cause identification process of the identification unit 122, the state estimation process of the estimation unit 123, and the response process of the response unit 124 (including the disaster attribute determination process).

[0140] As described above, the output unit 13 outputs at least one of status information and action information (see Figures 4 and 5). The output of status information and other information is usually transmitted to the terminal 40 via the communication module, but it may also be displayed on the display 15B or output as audio from a speaker (not shown).

[0141] Each component (11-13 and 121-124) of the main circuit breaker 10 normally operates on power from the power grid 201, but during a power outage, it operates on power from the power supply unit 14.

[0142] The measurement unit 15 is connected to the main circuit breaker 10 for constant communication. The connection between the measurement unit 15 and the main circuit breaker 10 is via short-range wireless communication.

[0143] The measurement unit 15 measures the power of the first circuit 203a on the primary side of the main breaker 10 using a power meter. The measurement unit 15 also measures the current of the second circuit 203b on the secondary side of the main breaker 10 using a first ammeter. Furthermore, the measurement unit 15 measures its own acceleration using an accelerometer. The measurement unit 15 then transmits these three measurement results (power value, first current value, and acceleration value) to the main breaker 10.

[0144] Based on the measurement results from the measurement unit 15, the main circuit breaker 10 detects the occurrence of overcurrent, leakage current, and earthquake on its secondary side and trips.

[0145] (4-1) Example of operation The main circuit breaker 10 operates, for example, according to the flowchart shown in Figure 3. This flowchart process is initiated in response to the supply of power from the power grid 201.

[0146] The processing unit 12, which constitutes the main circuit breaker 10, determines whether or not a power outage has occurred based on the measurement results from the measurement unit 15 (step S1). If it is determined that no power outage has occurred, the process returns to step S1.

[0147] If it is determined that a power outage has occurred, the acquisition unit 121, which constitutes the processing unit 12, executes an acquisition process to acquire disaster-related information (step S2). Next, the identification unit 122 executes a cause identification process to acquire cause information (step S3).

[0148] Next, the estimation unit 123 performs a state estimation process based on the disaster-related information obtained in step S2 and the cause information obtained in step S3, and obtains state information (step S4).

[0149] Next, the response unit 124 performs a disaster attribute determination process based on the disaster attribute information included in the disaster-related information acquired in step S2 (step S5) to determine whether the power outage that occurred is a disaster-related power outage or not (step S6).

[0150] If the system determines that the power outage is a disaster-related power outage, the response unit 124 acquires response information including at least one of warning information and recommendation information, and the output unit 13 outputs the acquired response information (step S7). As a result, a screen like the one shown in Figure 5 is displayed on the terminal 40.

[0151] If the system determines that the power outage is not a disaster-related power outage, the response unit 124 acquires response information including procedural information, and the output unit 13 outputs the acquired response information (step S8). As a result, a screen like the one shown in Figure 4 is displayed on the terminal 40.

[0152] After the troubleshooting information is output, the process returns to step S1.

[0153] Note that the acquisition process in step S2 may be executed before the determination process in step S1 (determining whether or not there is a power outage). If it is determined in step S1 after step S2 that there is no power outage, the process may return to the acquisition process in step S2 after a certain period of time has elapsed since that determination.

[0154] (4-2) Example Output (4-2-1) Example of output in the case of a power outage due to a disaster The screen in Figure 5 includes the following text, which warns against attempting to restore power and recommends contacting a professional: "A power outage has occurred. The cause of the power outage is the operation of the in-house circuit breaker. There is a possibility of a short circuit due to flooding caused by heavy rain. Please take the following steps: Do not turn on the circuit breaker switch. Please contact a professional for inspection."

[0155] Customers can refer to the screen in Figure 5 to take appropriate action against the disaster-induced electrical leakage that caused the power outage (refraining from restoration operations and requesting an inspection from a contractor).

[0156] (4-2-2) Example of output in the case of a non-disaster power outage The screen in Figure 4 contains the following text indicating the procedure for restoring power: "A power outage has occurred. The cause of the power outage is the operation of the in-house circuit breaker. There is a possibility of a short circuit. Please take the following steps: Turn off all branch circuit breaker switches. Turn on the main circuit breaker switch. Turn on the branch circuit breaker switches one by one..."

[0157] Customers can refer to the screen in Figure 4 to take appropriate action (restoration operation) against non-disaster-related electrical leakage that caused the power outage.

[0158] (4-3) Advantages of Embodiment 1 As described above, according to Embodiment 1, it is possible to estimate the state of the electrical circuit in the event of a power outage in a single house, and consequently to take action against the estimated state.

[0159] (5) Embodiment 2 Next, we will describe the state estimation system 1 according to Embodiment 2 of this disclosure. In the following, we will only describe the differences from Embodiment 1, and explanations of previously mentioned matters will be omitted or simplified.

[0160] The state estimation system 1 according to Embodiment 2 comprises one or more distribution boards 100 and a server 30, as shown in Figure 6. Each of the one or more distribution boards 100 is continuously connected to the server 30 via a first network 301, a GW 303, and a second network 302. The server 30 may also be connected to a customer terminal 40 via the first network 301. Circuit breakers (10, 50) and measurement units 15 are built into each of the one or more distribution boards 100.

[0161] (5-1) Server In Embodiment 1, the acquisition unit 121, identification unit 122, estimation unit 123, and handling unit 124 (see Figure 2) that were provided in the main circuit breaker 10 are removed from the main circuit breaker 10 in Embodiment 2, as shown in Figure 8, and provided in the server 30, as shown in Figure 7.

[0162] (5-1-1) Server acquisition section The acquisition unit 121 of the server 30 performs the aforementioned acquisition process for disaster-related information related to natural disasters in the area where each of the one or more distribution boards 100 is located. The results of the acquisition process are usually stored in the server 30's memory, associated with a distribution board identifier that identifies each distribution board 100.

[0163] (5-1-2) Server identification part The identification unit 122 of the server 30 performs the cause identification process described above based on the measurement results from the measurement units 15 built into each of the one or more distribution boards 100.

[0164] (5-1-3) Server estimation unit The estimation unit 123 of the server 30 performs the state estimation process described above for each of the circuit breakers (10, 50) built into one or more distribution boards 100, specifically for the circuits (203a to 203c) that are interposed therein.

[0165] (5-1-4) Server handling section, etc. The response unit 124 of the server 30 performs a response process, including the aforementioned disaster attribute determination process, for each of the circuit circuits (203a to 203c) through which the circuit breakers (10, 50) built into each of the one or more distribution boards 100 are located.

[0166] Thus, in Embodiment 2, the state estimation system 1 comprises one or more distribution boards 100 and a server 30, and the server 30 performs, for each of the one or more distribution boards 100 (each distribution board 100), a response process including acquisition processing, cause identification processing, state estimation processing, and disaster attribute determination processing (and further, an output process that outputs at least one of state information and response information). As a result, in the event of a power outage, the state of the electrical circuits (203a to 203c) can be estimated in each distribution board 100.

[0167] (5-2) One or more distribution boards Each of the one or more distribution boards 100 constituting the state estimation system 1 of Embodiment 2 includes a main circuit breaker 10, one or more branch circuit breakers 50, a measurement unit 15, and a power supply unit 14, similar to the single distribution board 100 constituting the state estimation system 1 of Embodiment 1.

[0168] (5-2-1) Measurement Unit However, the measurement unit 15 in Embodiment 2 further detects at least one of overcurrent and leakage current in the third circuit 203c.

[0169] (5-2-2) Storage section of the distribution board: Second storage section (5-3) Supporter's terminal In Embodiment 2, as described above, status information and the like are transmitted to the supporter's terminal 40 in addition to, or instead of, the customer's terminal 40. The server 30 is connected to the supporter's terminal 40 via the first network 301 so as to be able to communicate with it.

[0170] (5-3-1) Contractor The contractor is an electrical contractor that performs work related to electrical circuits (203a~203c). The contractor's terminal 40 is connected to the server 30 via the first network 301 so that it can communicate with it.

[0171] (5-3-2) Disaster response information for businesses and disaster response information for customers The response unit 124 may acquire disaster response information for contractors as well as disaster response information for customers. The disaster response information for contractors includes request information requesting at least one of inspection and repair related to the electrical circuits (203a to 203c). The disaster response information for customers includes notification information notifying that the request information for contractors will be transmitted.

[0172] The output unit 13 may transmit the service provider's response information to the former terminal 40, and also transmit the customer's response information to the customer's terminal 40.

[0173] (5-4) Example of operation Server 30 executes the flowchart in Figure 3 for each of the one or more distribution boards 100. Below, we will explain the process for one of the one or more distribution boards 100 (hereinafter simply referred to as "distribution board 100").

[0174] The processing unit 32, which constitutes the server 30, determines whether or not a power outage has occurred in the house, including the distribution board 100, based on the measurement results from the measurement unit 15 of the distribution board 100 (step S1). If it is determined that no power outage has occurred, the process returns to step S1.

[0175] If it is determined that a power outage has occurred, the acquisition unit 121, which constitutes the processing unit 32, executes an acquisition process to acquire disaster-related information for the area, including the distribution board 100 (step S2). Next, the identification unit 122 executes an in-house cause identification process for the premises, including the distribution board 100, and acquires cause information (step S3).

[0176] Next, the estimation unit 123 performs a state estimation process for the electrical circuit corresponding to the distribution board 100 based on the disaster-related information obtained in step S2 and the cause information obtained in step S3, and obtains state information (step S4).

[0177] Next, the response unit 124 performs a disaster attribute determination process based on the disaster attribute information included in the disaster-related information acquired in step S2 (step S5) to determine whether the power outage that occurred in the house, including the distribution board 100, is a disaster-related power outage or not (step S6).

[0178] If the system determines that the power outage is a disaster-related power outage, the response unit 124 acquires response information for the premises, including the distribution board 100, which includes at least one of warning information and recommendation information, and the output unit 13 outputs the acquired response information (step S7). As a result, a screen like the one shown in Figure 9 is displayed on the customer's terminal 40, which is connected to the distribution board 100.

[0179] If the system determines that the power outage is not a disaster-related outage, the response unit 124 acquires response information including procedural information, and the output unit 13 outputs the acquired response information (step S8). As a result, a screen like the one shown in Figure 4 is displayed on the customer's terminal 40.

[0180] After the troubleshooting information is output, the process returns to step S1.

[0181] (5-5) Output example (5-5-1) Example of output in the case of a disaster-related power outage For example, in response to a disaster-related power outage occurring within the home, including the distribution board 100, a screen like the one shown in Figure 9 is displayed on the customer's terminal 40, which is connected to the distribution board 100.

[0182] The screen in Figure 9 contains text that warns against attempting to restore power and recommends contacting a professional: "A power outage has occurred. The cause of the power outage is the operation of the in-house circuit breaker. There is a possibility of electrical leakage in the entrance due to flooding caused by heavy rain. Please take the following steps: Turn off the switch on the upper right branch circuit breaker. Turn on the switch on the main circuit breaker. We have requested an inspection from a professional, so please wait for their arrival."

[0183] Customers inside the house, including those with access to the distribution board 100, can refer to the screen in Figure 9 to take appropriate action against the disaster-related electrical leakage at the entrance, which is the cause of the power outage (by turning off the branch breaker corresponding to the entrance, turning on the main breaker switch, and waiting for the technician to arrive).

[0184] (5-5-2) Example of output in the case of a non-disaster power outage In response to a non-disaster-related power outage occurring within the home, including the distribution board 100, a screen like the one shown in Figure 4 is displayed on the customer's terminal 40, which is connected to the distribution board 100.

[0185] Customers inside their homes, including those inside the distribution board 100, can refer to the screen in Figure 4 to take appropriate action (restoration operation) against non-disaster-related electrical leakage that caused the power outage.

[0186] (5-6) Advantages of Embodiment 2 As described above, according to Embodiment 2, by performing acquisition processing, cause identification processing, and state estimation processing (and further, countermeasure processing including disaster attribute determination processing, and output processing) for each of one or more houses in response to a power outage, it becomes possible to estimate the state of the electrical circuits (203a to 203c) and, consequently, to take action against the estimated state.

[0187] (6) State estimation method and program Functions similar to those of state estimation system 1 may be implemented by a state estimation method or program. The state estimation method includes at least step S2 (acquisition step), step S3 (specification step), and step S4 (estimation step) from among the various steps described above.

[0188] The program causes one or more computers to execute a state estimation method. One or more computers may be, for example, the processor of the main circuit breaker 10 alone, or two processors, such as the processor of the main circuit breaker 10 and the processor of the server 30, or three or more processors, such as these two processors plus one or more processors corresponding to one or more terminals 40.

[0189] (7) Summary A state estimation system (1) according to a first aspect of this disclosure comprises an acquisition unit (121), a specification unit (122), and an estimation unit (123). The acquisition unit (121) performs an acquisition process. The acquisition process is the process of acquiring disaster-related information from an external server (60). The disaster-related information is information related to the occurrence of natural disasters. The specification unit (122) performs a cause identification process when a power outage occurs. The cause identification process is the process of identifying the cause of the power outage and acquiring cause information based on measurement results from a measurement unit (15). The measurement unit (15) is used in conjunction with a circuit breaker (main circuit breaker 10, branch circuit breakers 50: hereinafter simply referred to as (10, 50)). The circuit breakers (10, 50) are located in the electrical circuits (first circuit 203a, second circuit 203b, third circuit 203c; hereinafter simply referred to as (203a~203c)) between the power grid (201) and the load inside the customer's house (202). The estimation unit (123) performs state estimation processing. State estimation processing is a process that estimates the state of the electrical circuits (203a~203c) based on disaster-related information and cause information, and obtains state information related to the estimation results.

[0190] According to this embodiment, when a power outage occurs, it is possible to estimate the state of the electrical circuits (203a to 203c) using disaster-related information from an external server (60) and cause information based on the measurement results of the measurement unit (15). In turn, it becomes possible to take appropriate action according to the estimated state.

[0191] In the state estimation system (1) according to the second embodiment, in the first embodiment, the measurement unit (15) includes one or more measuring instruments for detecting one or more tripping causes from overcurrent, leakage current, and earthquake. The measurement result includes one or more measured values ​​corresponding to one or more measuring instruments. The breaker (10, 50) performs a tripping operation to interrupt the current in the circuit (203a~203c) when it detects one or more tripping causes based on one or more measured values. The power outage is a power outage within the house. The power outage within the house is a power outage caused by the tripping operation. The cause information includes tripping cause information. The tripping cause information is information that identifies which of the one or more tripping causes caused the tripping operation.

[0192] According to this embodiment, when a power outage occurs inside a house, it becomes possible to estimate the cause of the interruption (whether the abnormality occurring in the electrical circuit inside the house (203a~203c) is due to overcurrent, leakage current, or earthquake).

[0193] In the state estimation system (1) according to the third embodiment, in the second embodiment, the measurement unit (15) further includes other measuring instruments for detecting a grid outage. A grid outage is a power outage caused by the power system (201). The cause identification process further identifies whether the outage is a grid outage or an in-house outage based on the measured values ​​of the other measuring instruments. The cause information further includes power outage cause information. The power outage cause information is information indicating whether the power outage is a grid outage or an in-house outage.

[0194] According to this configuration, it becomes possible to estimate whether the power outage occurring is a system outage (a state in which no current flows through the circuit (203a~203c) on the primary side (outside the house) of the circuit breaker (10,50)) or an in-house outage (a power outage caused by the tripping operation of the circuit breaker (10,50): a state in which current flows through the circuit (203a~203c) outside the house, but no current flows through the circuit (203a~203c) on the secondary side (inside the house) of the circuit breaker (10,50)).

[0195] In the state estimation system (1) relating to the fourth aspect, in any of the first to third aspects, the natural disaster includes at least one of earthquakes, lightning, heavy rain, and floods.

[0196] According to this approach, by considering information on earthquakes, lightning, heavy rain, and floods, the state of the power lines (203a-203c) can be estimated in more detail (estimating which of the following natural disasters—earthquake, lightning, heavy rain, or flood—is the root cause of the power outage). This, in turn, enables appropriate countermeasures depending on the type of natural disaster.

[0197] The state estimation system (1) according to the fifth embodiment further comprises, in any of the first to fourth embodiments, a response unit (124) and an output unit (13). The response unit (124) acquires response information. The response information is information that supports the response according to the state estimated by the estimation unit (123). The output unit (13) outputs at least one of the state information and the response information.

[0198] This configuration makes it possible to provide support for countermeasures that correspond to the condition of the electrical circuits (203a to 203c) (countermeasures corresponding to various causes of interruption, countermeasures suitable for natural disasters, etc.).

[0199] In the state estimation system (1) according to the sixth embodiment, in the fifth embodiment, the output unit (13) transmits at least one of the state information and the action information to at least one of the customer's and the supporter's terminals (40). The supporter assists the customer in dealing with the power outage.

[0200] According to this embodiment, by transmitting at least one of status information and action information to the customer's or supporter's terminal (40), it is possible to enable the customer to take action against a power outage in their home or for the supporter to take action.

[0201] In the state estimation system (1) according to the seventh embodiment, in the sixth embodiment, the state information further includes disaster attribute information. The disaster attribute information indicates whether the root cause of the power outage is a disaster-related power outage caused by a natural disaster or a non-disaster-related power outage not caused by a natural disaster. The response unit (124) acquires different response information depending on whether the disaster attribute information included in the state information indicates a disaster-related power outage or a non-disaster-related power outage.

[0202] According to this embodiment, when the root cause of a power outage is a natural disaster, it is possible to provide support for appropriate measures to be taken during a natural disaster (for example, measures that can prevent secondary disasters such as electrical fires).

[0203] In the state estimation system (1) according to the eighth embodiment, in the seventh embodiment, the response unit (124) acquires disaster response information when the disaster attribute information included in the state information indicates a disaster-related power outage. The disaster response information includes at least one of warning information and recommendation information. The warning information is information that restoring the circuit breakers (10, 50) from the tripped state should be refrained from. The recommendation information is information that recommends performing at least one of inspection and repair related to the electrical circuits (203a~203c).

[0204] According to this embodiment, in response to disaster-related power outages, support for appropriate responses to natural disasters can be provided by obtaining disaster response information, including warning information or recommendation information.

[0205] In the state estimation system (1) according to the ninth embodiment, in the eighth embodiment, the supporter is a contractor involved with the electrical circuits (203a~203c). If the disaster attribute information included in the state information indicates a disaster-related power outage, the response unit (124) and the output unit (13) perform the following operations. Specifically, the response unit (124) acquires disaster response information for contractors, which includes request information to request at least one of inspection and repair related to the electrical circuits (203a~203c), and also acquires disaster response information for customers, which includes at least one of warning information that customers should refrain from performing a reset operation to restore the breakers (10, 50) from the tripped state, and notification information that the contractor response request information will be sent. The output unit (13) transmits the contractor response information to the contractor's terminal (40) and transmits the customer response information to the customer's terminal (40).

[0206] In this configuration, during a power outage caused by a disaster, an inspection is automatically requested from a contractor, and the customer is warned to refrain from attempting to restore power and notified of the request to the contractor, thereby supporting the customer in taking appropriate action with the help of the contractor.

[0207] In the state estimation system (1) according to the tenth embodiment, in any of the seventh to ninth embodiments, if the disaster attribute information included in the state information indicates a non-disaster power outage, the response unit (124) and the output unit (13) perform the following operations. That is, the response unit (124) acquires non-disaster response information. The non-disaster response information includes procedural information relating to the procedure for the restoration operation to restore the circuit breakers (10, 50) from the tripped state. The output unit (13) transmits the non-disaster response information to the customer's terminal (40).

[0208] In this configuration, during non-disaster-related power outages, customers can be supported in taking appropriate action themselves by being notified of the procedure for restoring power.

[0209] The state estimation system (1) according to the 11th embodiment further comprises one or more distribution boards (100) and a server (30) in any of the first to tenth embodiments. The server (30) is capable of communicating with each of the one or more distribution boards (100). Circuit breakers (10, 50) and measurement units (15) are built into each of the one or more distribution boards (100). An acquisition unit (121), a specification unit (122), and an estimation unit (123) are provided in the server (30). The acquisition unit (121) provided in the server (30) performs acquisition processing for disaster-related information related to natural disasters in the area where each of the one or more distribution boards (100) is located. The specification unit (122) provided in the server (30) performs cause identification processing based on measurement results from the measurement units (15) built into each of the one or more distribution boards (100). The estimation unit (123) of the server (30) performs state estimation processing for the circuits (203a to 203c) through which the circuit breakers (10, 50) built into each of the one or more distribution boards (100) are located.

[0210] According to this embodiment, it is possible to estimate the state of the electrical circuits (203a to 203c) in each of the one or more distribution boards (100). Consequently, it is possible to take appropriate action in each distribution board (100) according to the estimated state.

[0211] The circuit breaker (10, 50) according to the twelfth embodiment is interposed in the electrical circuit (203a~203c) between the power system (201) and the load (202) inside the customer's premises. The circuit breaker (10, 50) comprises an acquisition unit (121), a specification unit (122), and an estimation unit (123). The acquisition unit (121) performs an acquisition process. The acquisition process is the process of acquiring disaster-related information from an external server (60). The disaster-related information is information related to the occurrence of natural disasters. The specification unit (122) performs a cause identification process when a power outage occurs. The cause identification process is the process of identifying the cause of the power outage and acquiring cause information based on the measurement results from the measurement unit (15). The measurement unit (15) is used in conjunction with the circuit breaker (10, 50). The estimation unit (123) performs a state estimation process. The state estimation process estimates the state of the electrical circuits (203a~203c) based on disaster-related information and cause information, and obtains state information related to the estimation results.

[0212] According to this embodiment, similar to the first embodiment, it is possible to estimate the state of the electrical circuits (203a to 203c) when a power outage occurs, and to take appropriate action according to the estimated state.

[0213] The distribution board (100) according to the 13th embodiment includes the circuit breakers (50, 10) according to the 12th embodiment.

[0214] According to this embodiment, similar to the first embodiment, it is possible to estimate the state of the electrical circuits (203a to 203c) when a power outage occurs, and to take appropriate action according to the estimated state.

[0215] The state estimation method according to the 14th embodiment comprises an acquisition step (S2), a identification step (S3), and an estimation step (S4). The acquisition step (S2) executes an acquisition process. The acquisition process is the process of acquiring disaster-related information from an external server (60). The disaster-related information is information related to the occurrence of natural disasters. The identification step (S3) executes a cause identification process when a power outage occurs. The cause identification process is the process of identifying the cause of the power outage and acquiring cause information based on the measurement results from the measurement unit (15). The measurement unit (15) is used in conjunction with the circuit breakers (10, 50). The circuit breakers (10, 50) are interposed in the electrical circuits (203a~203c) between the power system (201) and the load (202) inside the customer's house. The estimation step (S4) executes a state estimation process. The state estimation process estimates the state of the electrical circuits (203a~203c) based on disaster-related information and cause information, and obtains state information related to the estimation results.

[0216] According to this embodiment, similar to the first embodiment, it is possible to estimate the state of the electrical circuits (203a to 203c) when a power outage occurs, and to take appropriate action according to the estimated state.

[0217] The program according to the 15th embodiment causes one or more computers to execute the state estimation method according to the 14th embodiment.

[0218] According to this embodiment, similar to the first embodiment, it is possible to estimate the state of the electrical circuits (203a to 203c) when a power outage occurs, and to take appropriate action according to the estimated state. [Explanation of Symbols]

[0219] 1. State Estimation System 10. Main circuit breaker (circuit breaker) 100-unit distribution board 11,31 Reception Department 12,32 Processing Unit 121 Acquisition Department 122 Specific part 123 Estimation Department 124 Response Section 13,33 Output Department 14 Power Supply Section 15 Measuring ユニット 30 サーバ 40 end 60 external サーバ 201 Power System 202 load 203a Circuit 1 (Circuit) 203b Circuit 2 (Circuit) 203c Circuit 3 (Circuit)

Claims

1. An acquisition unit that performs an acquisition process to obtain disaster-related information related to the occurrence of natural disasters from an external server, A unit that performs a cause identification process to identify the cause of a power outage and acquire cause information based on measurement results from a measurement unit used in conjunction with a circuit breaker interposed in the electrical circuit between the power system and the load inside the customer's home when a power outage occurs, The system includes an estimation unit that performs a state estimation process, which estimates the state of the electrical circuit based on the disaster-related information and the cause information, and obtains state information related to the estimation result. State estimation system.

2. The measurement unit includes one or more measuring instruments for detecting one or more causes of interruption among overcurrent, leakage current, and earthquake. The measurement results include one or more measured values ​​corresponding to one or more measuring instruments, The circuit breaker, when it detects one or more of the above-mentioned causes of interruption based on the one or more measured values, performs an interruption operation to interrupt the current in the circuit. The aforementioned power outage is a power outage within the home caused by the aforementioned shutoff operation. The aforementioned cause information includes cause information that identifies which of the one or more aforementioned cause information is the cause of the shutdown operation that led to the shutdown operation. The state estimation system according to claim 1.

3. The measurement unit further includes other measuring instruments for detecting a power outage, which is a power outage caused by the power system. The aforementioned cause identification process further determines whether the power outage is a system outage or an in-house outage, based on the measured values ​​of the other measuring instruments. The aforementioned cause information further includes power outage cause information indicating whether the power outage is a system outage or an in-house power outage. The state estimation system according to claim 2.

4. The aforementioned natural disaster includes at least one of the following: earthquake, lightning, heavy rain, and flood. The state estimation system according to claim 1.

5. A response unit that acquires response information to support taking action according to the state estimated by the estimation unit, The system further includes an output unit that outputs at least one of the aforementioned state information and the aforementioned action information. The state estimation system according to claim 1.

6. The output unit transmits at least one of the status information and the action information to the terminal of at least one of the customer and the support person who assists the customer in dealing with the power outage. The state estimation system according to claim 5.

7. The status information further includes disaster attribute information indicating whether the root cause of the power outage is a disaster-related power outage caused by the natural disaster or a non-disaster-related power outage not caused by the natural disaster, The aforementioned response unit acquires different response information depending on whether the disaster attribute information included in the status information indicates a disaster-related power outage or a non-disaster-related power outage. The state estimation system according to claim 6.

8. The response unit acquires disaster response information that includes at least one of the following: warning information indicating that the reset operation to restore the circuit breaker from the tripped state should be refrained from, and recommendation information indicating that at least one of the inspection and repair related to the electrical circuit should be performed, if the disaster attribute information included in the status information indicates a disaster-related power outage. The state estimation system according to claim 7.

9. The aforementioned supporter is a contractor involved in the aforementioned electrical circuit, If the disaster attribute information included in the status information indicates a disaster-related power outage, The response unit acquires disaster response information for contractors, which includes request information to request at least one of inspection and repair related to the electrical circuit, and also acquires disaster response information for customers, which includes at least one of warning information advising the customer to refrain from performing a reset operation to restore the breaker from the tripped state, and notification information indicating that the request information for contractors will be sent. The output unit transmits the vendor-directed response information to the vendor's terminal and the customer-directed response information to the customer's terminal. The state estimation system according to claim 8.

10. If the disaster attribute information included in the status information indicates a non-disaster-related power outage, The aforementioned response unit acquires non-disaster response information, including procedural information relating to the procedure for a reset operation to restore the circuit breaker from the tripped state. The output unit transmits the non-disaster response information to the customer's terminal. The state estimation system according to claim 7.

11. One or more distribution boards, The system further comprises a server capable of communicating with each of the one or more of the aforementioned distribution boards, The circuit breaker and the measurement unit are built into each of the one or more distribution boards. The acquisition unit, the identification unit, and the estimation unit are provided in the server. The acquisition unit provided in the server performs the acquisition process for the disaster-related information relating to the natural disaster in the area where each of the one or more distribution boards is located. The identification unit provided in the server executes the cause identification process based on the measurement results from the measurement units built into each of the one or more distribution boards. The estimation unit provided in the server performs the state estimation process for the circuit through which the circuit breaker built into each of the one or more distribution boards is interposed. A state estimation system according to any one of claims 1 to 10.

12. A circuit breaker interposed in the electrical circuit between the power grid and the load inside the customer's home, An acquisition unit that performs an acquisition process to obtain disaster-related information related to the occurrence of natural disasters from an external server, When a power outage occurs, the system includes a unit that performs a cause identification process to identify the cause of the power outage and acquire cause information based on measurement results from a measurement unit used in conjunction with the circuit breaker, and a unit that performs a cause identification process. The system includes an estimation unit that performs a state estimation process, which estimates the state of the electrical circuit based on the disaster-related information and the cause information, and obtains state information related to the estimation result. breaker.

13. The circuit breaker is provided as described in claim 12. Distribution board.

14. An acquisition step that executes an acquisition process to obtain disaster-related information related to the occurrence of a natural disaster from an external server, The process includes a determination step, in which, when a power outage occurs, a measurement unit used in conjunction with a circuit breaker in the electrical circuit between the power grid and the load inside the customer's home is used to determine the cause of the power outage and to obtain cause information, and a determination step, in which the cause of the power outage is determined based on the measurement results from the measurement unit, and the cause of the power outage is determined and cause information is obtained. The system includes an estimation step of performing a state estimation process that estimates the state of the electrical circuit based on the disaster-related information and the cause information, and obtains state information related to the estimation result. State estimation method.

15. To cause one or more computers to execute the state estimation method described in claim 14, program.

Images