Breaking systems and distribution boards

Abstract

To provide a shutoff system and the like that can accurately detect abnormalities related to electrical paths.SOLUTION: A shutoff system 100 includes: an acquisition unit 22 that acquires a current value of current flowing in an electrical path between an AC power source AC and a load 31; a detection unit 11 that detects an abnormality regarding the electrical path based on the current value acquired by executing software; a shutoff unit 12 that shuts off the electrical path when an abnormality is detected; a communication unit that outputs first information including a pre-shut off current value before the electrical path is shut off and a detection result indicating that an abnormality has been detected; and a control unit that updates the software when it is determined that the abnormality indicated by the detection result is due to false detection based on the pre-shutoff current value.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a circuit breaking system and a distribution board. [Background technology]

[0002] Patent Document 1 discloses a distribution board that includes a breaker (breaker system) that breaks an electric circuit when there is an abnormality in the current flow state of the electric circuit, and a communication unit. In such a distribution board, the communication unit is used to output the detection result of whether or not there is an abnormality in the current flow state. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent Publication No. 2021-048771 Summary of the Invention [Problem to be solved by the invention]

[0004] In recent years, new types of electrical appliances have been developed, and in homes, for example, these electrical appliances are connected to AC power sources as new types of loads that are different from existing loads. Even when such new types of loads are used, it is necessary to detect abnormalities in the electrical circuits in the distribution board.

[0005] When such a new type of load is connected to and used in a distribution board, if software stored in the distribution board at the time of manufacture or shipment is executed to detect an abnormality in the electrical circuit, false detection may occur. An example of a false detection is a case where an abnormality is mistakenly detected even when no abnormality actually exists. For example, the circuit breaker system and distribution board disclosed in Patent Document 1 are expected to execute software stored at the time of manufacture or the like to perform detection even when a new type of load is used, which may result in frequent false detection. In other words, such a circuit breaker system and distribution board may not be able to accurately detect abnormalities in the electrical circuit.

[0006] The present invention provides a circuit breaker system and the like that can accurately detect abnormalities in an electric circuit. [Means for solving the problem]

[0007] A circuit breaker system according to one embodiment of the present invention includes an acquisition unit that acquires a current value flowing in an electric circuit between an AC power source and a load; a detection unit that executes software to detect an abnormality in the electric circuit based on the acquired current value; a circuit breaker that cuts off the electric circuit when the abnormality is detected; a communication unit that outputs first information including a pre-interruption current value before the electric circuit is cut off and a detection result indicating that the abnormality has been detected; and a control unit that updates the software when it is determined based on the pre-interruption current value that the abnormality indicated by the detection result is due to a false detection.

[0008] A distribution board according to one aspect of the present invention includes the above-described circuit breaking system and a distribution board cabinet that stores the circuit breaking system. [Effects of the Invention]

[0009] The circuit breaker system of the present invention can accurately detect abnormalities in electrical circuits. [Brief explanation of the drawings]

[0010] [Figure 1] FIG. 1 is a block diagram illustrating a functional configuration of an interruption system according to an embodiment. [Figure 2] FIG. 2 is a flowchart of an operation example according to the embodiment. [Figure 3] FIG. 3 is a block diagram illustrating a functional configuration of an interruption system according to the first modification of the embodiment. [Figure 4] FIG. 4 is a block diagram showing a functional configuration of an interruption system according to the second modification of the embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0011] Hereinafter, the embodiments will be described in detail with reference to the drawings. Note that the embodiments described below are all comprehensive or specific examples. The numerical values, shapes, materials, components, component placement and connection forms, steps, and step order shown in the following embodiments are merely examples and are not intended to limit the present invention. Furthermore, among the components in the following embodiments, components not recited in independent claims will be described as optional components.

[0012] It should be noted that the drawings are schematic diagrams and are not necessarily strict illustrations. In addition, in the drawings, substantially the same components are denoted by the same reference numerals, and overlapping descriptions may be omitted or simplified.

[0013] (Embodiment) [composition] First, the configuration of an interruption system 100 according to an embodiment will be described.

[0014] FIG. 1 is a block diagram showing the functional configuration of an interruption system 100 according to this embodiment.

[0015] The interruption system 100 according to this embodiment is a system for detecting an abnormality and interrupting an electric circuit, and is used in a distribution board 50 installed in a building B such as a detached house. In this embodiment, the abnormality to be detected is an arc in the electric circuit, etc. The interruption system 100 communicates with a server device 200, which is an example of an external device.

[0016] The distribution board 50 includes a breaker system 100 having a main breaker 10 and a measurement unit 20, and a plurality of branch breakers 30, in a distribution board cabinet 5. In other words, the distribution board 50 includes the breaker system 100, a plurality of branch breakers 30, and a distribution board cabinet 5.

[0017] The distribution board 50 distributes AC power from the power line 40 to the plurality of branch breakers 30 via the main breaker 10. For example, a single-phase three-wire power distribution system may be used.

[0018] Here, the main breaker 10 is electrically connected between a power line 40 electrically connected to an external alternating current power source AC such as a commercial power source, and a power line 41 electrically connected to a measurement unit 20 in a distribution board 50. In addition, the measurement unit 20 is electrically connected between the power line 41 and a power line 42 electrically connected to a plurality of branch breakers 30 in the distribution board 50.

[0019] Each of the branch breakers 30 is electrically connected between a power line 42 and a power line 43. Each of the branch breakers 30 is connected to a load 31 via the power line 43.

[0020] In this embodiment, the electric paths interrupted by the interruption system 100 are electric paths between the AC power source AC and the plurality of loads 31, and are, for example, the power lines 40, 41, and .

[0021] As described above, the breaker system 100 includes the main breaker 10 and the measurement unit 20.

[0022] First, the main breaker 10 will be described.

[0023] The main breaker 10 is a device that executes software to interrupt an electric circuit based on a current value measured by the measurement unit 20. More specifically, the main breaker 10 includes a detection unit 11, a breaking unit 12, a first control unit 13, a first storage unit 14, and a first communication unit 16.

[0024] The detection unit 11 is a processing unit that executes software (hereinafter sometimes referred to as detection software) to detect an abnormality in the electrical circuit based on the value of the current flowing through the electrical circuit measured by the measurement unit 20. The detection unit 11 is realized by, for example, a microcomputer, but may also be realized by a processor or a dedicated circuit. The function of the detection unit 11 is realized by hardware such as a microcomputer or processor that constitutes the detection unit 11 executing software (computer program) stored in the first storage unit 14.

[0025] The circuit breaker 12 breaks the electric circuit when an abnormality is detected by the detection unit 11. More specifically, the circuit breaker 12 breaks the electric circuit as follows. First, in this embodiment, a contact unit is provided between the power line 40 and the power line 41. The contact unit is configured to open in response to an open signal from the circuit breaker 12.

[0026] When an abnormality is detected by the detection unit 11, the breaker unit 12 generates an open signal to open the contact unit in response to the break signal output from the first control unit 13, and outputs the generated open signal to the contact unit. In other words, the breaker unit 12 has a function of breaking the electric circuit in response to the detection result of the detection unit 11.

[0027] The first control unit 13 is a processing unit that outputs a shutdown signal to the interruption unit 12 when an abnormality is detected by the detection unit 11. In other words, when the detection unit 11 detects an abnormality, it outputs a detection result indicating that the abnormality has been detected to the first control unit 13, and the first control unit 13 outputs a shutdown signal to the interruption unit 12 in accordance with the output detection result. The first control unit 13 is realized, for example, by a microcomputer, but may also be realized by a processor or a dedicated circuit. The functions of the first control unit 13 are realized when hardware such as a microcomputer or processor constituting the first control unit 13 executes software (computer programs) stored in the first storage unit 14.

[0028] The first storage unit 14 is a storage device that stores information necessary for information processing to interrupt an electric circuit, such as software executed by the interrupting unit 12 and the first control unit 13. The first storage unit 14 is realized by, for example, a semiconductor memory.

[0029] The first communication unit 16 is an example of a communication unit and is a communication circuit that allows the main breaker 10 to communicate with the measurement unit 20 and the server device 200. In the present embodiment, the first communication unit 16 is a circuit for performing wireless communication, and specifically, the first communication unit 16 performs wireless communication according to a communication standard such as BLE (Blutooth (registered trademark) Low Energy) or Wi-Fi (registered trademark). Note that the first communication unit 16 may also be a circuit for performing wired communication. For example, the first communication unit 16 acquires a current value measured by the measurement unit 20 from the measurement unit 20. The first communication unit 16 also outputs first information that includes a pre-interruption current value before the electric circuit is interrupted and a detection result indicating that an abnormality has been detected. In this example, the first communication unit 16 outputs the first information to the server device 200.

[0030] 1, the detection unit 11, the breaker unit 12, the first control unit 13, the first storage unit 14, and the first communication unit 16 are housed in a housing 1 of the main breaker 10. The housing 1 is an example of a housing unit.

[0031] Next, the measurement unit 20 will be described.

[0032] The measurement unit 20 measures the value of a current flowing in an electric path between an AC power source AC and a plurality of loads 31. The measurement unit 20 includes a measurement unit 21, an acquisition unit 22, a determination unit 23, a second control unit 24, a second storage unit 25, an input reception unit 26, and a second communication unit 27.

[0033] The measurement unit 21 is a device that measures the value of a current flowing in an electric path between an alternating current power supply AC and a plurality of loads 31, that is, a current value sensor as an example, and more specifically, a CT (Current Transformer) sensor.

[0034] The acquisition unit 22 is a processing unit that acquires the value of a current flowing in an electric path between the AC power supply AC and the plurality of loads 31. That is, the acquisition unit 22 acquires the current value measured by the measurement unit 21. The acquisition unit 22 is realized by, for example, a microcomputer, but may also be realized by a processor or a dedicated circuit. The function of the acquisition unit 22 is realized by hardware such as a microcomputer or processor that constitutes the acquisition unit 22 executing software (computer program) stored in the second storage unit 25.

[0035] The determination unit 23 is a processing unit that determines whether the abnormality detected by the detection unit 11 is due to erroneous detection. The determination unit 23 determines whether the abnormality is due to erroneous detection based on the pre-interruption current value. For example, if one of the multiple loads 31 corresponds to a new type of load, the detection unit 11 may erroneously detect that an abnormality has occurred even though no abnormality has actually occurred. False detection refers to such a situation in which an abnormality is erroneously detected as occurring even though no abnormality actually exists. The determination unit 23 is realized, for example, by a microcomputer, but may also be realized by a processor or a dedicated circuit. The function of the determination unit 23 is realized by hardware such as a microcomputer or processor that constitutes the determination unit 23 executing software (computer programs) stored in the second storage unit 25.

[0036] When the acquisition unit 22 acquires a current value, the second control unit 24 controls the second communication unit 27 to output the acquired current value to the main breaker 10. Furthermore, when the determination unit 23 determines whether the abnormality is due to a false detection, the second control unit 24 controls the second communication unit 27 to output a first determination result, which is the determination result by the determination unit 23. The second control unit 24 is realized by, for example, a microcomputer, but may also be realized by a processor or a dedicated circuit. The function of the second control unit 24 is realized by hardware such as a microcomputer or processor constituting the second control unit 24 executing software (computer programs) stored in the second storage unit 25.

[0037] The second storage unit 25 is a storage device that stores information necessary for information processing for interrupting an electric circuit, such as software executed by the acquisition unit 22, the determination unit 23, and the second control unit 24. The second storage unit 25 is realized by, for example, a semiconductor memory.

[0038] The input receiving unit 26 receives an operation from a user. Specifically, the input receiving unit 26 is realized by a touch panel or the like. The user may be a service technician who repairs or inspects the shutdown system 100. The input receiving unit 26 receives an operation from the user indicating a second determination result as to whether or not the abnormality detected by the detection unit 11 is due to a false detection.

[0039] The second communication unit 27 is a communication circuit that enables the measurement unit 20 to communicate with the main breaker 10 and the server device 200. In the present embodiment, the second communication unit 27 is a circuit for performing wireless communication, and specifically, the second communication unit 27 performs wireless communication according to a communication standard such as BLE or Wi-Fi (registered trademark). For example, when the input receiving unit 26 receives an operation that indicates the second determination result, the second control unit 24 controls the second communication unit 27 to output the second determination result that is indicated by the operation received by the input receiving unit 26. The second communication unit 27 outputs the second determination result to the server device 200. Note that the second communication unit 27 may be a circuit for performing wired communication.

[0040] 1, the measurement unit 21, the acquisition unit 22, the determination unit 23, the second control unit 24, the second storage unit 25, the input reception unit 26, and the second communication unit 27 are housed in a housing 2 of the measurement unit 20. The housing 2 is an example of a housing unit. However, this is not limiting, and the housing 2 may house the acquisition unit 22, the determination unit 23, the second control unit 24, the second storage unit 25, the input reception unit 26, and the second communication unit 27, and the measurement unit 21 may be disposed outside the housing 2, in a distribution board cabinet 5.

[0041] In this embodiment, the housing 1 and the housing 2 are separate bodies and are separate housings.

[0042] Next, the server device 200 will be described.

[0043] The server device 200 is an example of an external device. In the present embodiment, the server device 200 is a cloud server. Alternatively, for example, a high-performance processor dedicated to the shutdown system 100 may be used as the external device instead of the server device 200. An external device such as the server device 200 is installed outside the building B, more specifically, installed in a location remote from the building B. The external device may also be installed inside the building B. The server device 200 is a device used by an administrator who manages the shutdown system 100.

[0044] The server device 200 acquires the first information output from the main breaker 10 and the first and second judgment results output from the measurement unit 20.

[0045] The server device 200 includes a third communication unit 201. The third communication unit 201 is a communication circuit that enables the server device 200 to communicate with the main breaker 10 and the measurement unit 20. In the present embodiment, the third communication unit 201 is a circuit for performing wireless communication, and specifically, the third communication unit 201 performs wireless communication in accordance with a communication standard such as BLE or Wi-Fi (registered trademark). The third communication unit 201 acquires the first information output from the main breaker 10 and the first and second judgment results output from the measurement unit 20. Note that the third communication unit 201 may be a circuit for performing wired communication.

[0046] Here, if it is determined that the abnormality detected by the detection unit 11 is due to a false detection, the administrator creates second information for updating the detection software executed by the detection unit 11. Furthermore, the server device 200 outputs the created second information to the first communication unit 16.

[0047] In addition, in the main breaker 10, the first communication unit 16 acquires the output second information. Furthermore, the first control unit 13 updates the detection software executed by the detection unit 11 based on the acquired second information.

[0048] Next, the operation of the shutdown system 100 according to this embodiment configured as above will be described.

[0049] [Example of operation] Fig. 2 is a flowchart of an example of operation according to this embodiment. The operation of Fig. 2 is performed, for example, after a distribution board 50 (breaking system 100) is installed in building B and a plurality of loads 31 are connected to the distribution board 50 in building B. In this example of operation, one of the plurality of loads 31 corresponds to the new type of load described in "Problem to be Solved by the Invention."

[0050] First, the measurement unit 21 measures the value of the current flowing through the electrical path between the AC power supply AC and the plurality of loads 31 (S10).

[0051] The acquiring unit 22 acquires the current value measured by the measuring unit 21 (S12). The second communication unit 27 outputs the current value acquired by the acquiring unit 22 to the first communication unit 16. More specifically, the acquiring unit 22 outputs current value information linking the measured current value with the time when the current value was measured to the first communication unit 16. The first communication unit 16 acquires the current value information output by the second communication unit 27.

[0052] In addition, in this embodiment, in step S10, the measurement unit 21 constantly measures the value of the current flowing in the electric circuit, and in step S12, the acquisition unit 22 constantly acquires the measured current value, and further, the second communication unit 27 outputs the current value to the first communication unit 16. That is, in the measurement unit 20, the measurement unit 21 constantly measures (monitors) the value of the current flowing in the electric circuit, and all of the current values ​​are acquired by the acquisition unit 22 and output to the main breaker 10 by the second communication unit 27.

[0053] Next, the detection unit 11 executes the detection software stored in the first storage unit 14 and detects an abnormality in the electric circuit based on the current value information (more specifically, the current value) acquired by the second communication unit 27 (S14). For example, the detection unit 11 that has executed the detection software may detect an abnormality in the electric circuit when the acquired current value is larger or smaller than a predetermined threshold value, in other words, the detection unit 11 may detect that there is an abnormality, but this is not limited to this.

[0054] If the detection unit 11 does not detect any abnormality, that is, if there is no abnormality (No in S14), the operation ends.

[0055] If the detection unit 11 detects an abnormality, that is, if there is an abnormality (Yes in S14), the interruption unit 12 interrupts the electric circuit (S16). Here, when an abnormality is detected by the detection unit 11, the first control unit 13 outputs an interruption signal to the interruption unit 12. Furthermore, the interruption unit 12 generates an open signal that opens the contact unit in response to the interruption signal output by the first control unit 13, and outputs the generated open signal to the contact unit. The open signal from the interruption unit 12 opens the contact unit, thereby interrupting the electric circuit. Note that, hereinafter, the current value acquired in step S12 and for which a Yes is determined in S14 may be referred to as an abnormal current value.

[0056] Furthermore, when the electric circuit is interrupted, the first communication unit 16 outputs first information including a pre-interruption current value before the electric circuit is interrupted and a detection result indicating that an abnormality has been detected to the second communication unit 27. The first information may be stored in the first storage unit 14. The pre-interruption current value is a current value during a predetermined time period from the time before the electric circuit is interrupted to the time when the electric circuit is interrupted, and as an example, the predetermined time period is a few milliseconds or less, a few seconds or less, or a dozen seconds or less.

[0057] The determination unit 23 determines whether the abnormality detected by the detection unit 11 is due to a false detection (S18). Here, the determination unit 23 makes the above determination based on the first information acquired by the second communication unit 27. The determination unit 23 acquires a detection result indicating that the abnormality included in the first information has been detected, and makes the above determination based on the pre-interruption current value included in the first information. Here, the determination unit 23 executes software stored in the second storage unit 25 to determine whether the abnormality detected by the detection unit 11 is due to a false detection based on the pre-interruption current value included in the first information.

[0058] Here, the processing performance of the detection unit 11 and the determination unit 23 will be described.

[0059] In the distribution board cabinet 5, there are significant restrictions on the placement and size of the housing 1 of the main breaker 10, and it is particularly difficult to increase the size of the housing 1. For this reason, it is also difficult to increase the size of the microcomputer that constitutes the detection unit 11 placed inside the housing 1, making it difficult to improve the processing performance of the detection unit 11.

[0060] On the other hand, in the distribution board cabinet 5, there are few restrictions on the arrangement and size of the housing 2 of the measurement unit 20, and it is easy to make the housing 2 larger. Therefore, the microcomputer constituting the determination unit 23 arranged in the housing 2 can also be made larger. Therefore, the processing performance of the determination unit 23 can be improved compared to the detection unit 11.

[0061] In this way, the determination unit 23 with higher processing performance can more accurately determine whether or not an abnormality detected by the detection unit 11 with lower processing performance is due to a false detection.

[0062] The first determination result is the result of the determination made by the determination unit 23 as to whether the abnormality is due to erroneous detection. The first determination result indicates whether the abnormality is due to erroneous detection.

[0063] Next, the input receiving unit 26 receives, from a serviceman, who is an example of a user, an operation indicating a second determination result as to whether or not the abnormality detected by the detection unit 11 is due to a false detection (S20). For example, after the electric circuit is interrupted in step S16, when a resident living in building B contacts the serviceman to inform him or her that the electric circuit has been interrupted, the serviceman inspects the interruption system 100 and the like in building B. At this time, the serviceman determines whether or not the abnormality is due to a false detection based on the first information stored in the first storage unit 14. This determination result is the second determination result. The second determination result indicates whether or not the abnormality is due to a false detection. Alternatively, for example, the serviceman may operate a diagnostic device that determines whether or not the abnormality is due to a false detection based on the first information, and the diagnostic device may indicate a second determination result based on the first information. The input receiving unit 26 may receive, from the serviceman, an operation indicating the second determination result indicated by the diagnostic device.

[0064] Next, the first communication unit 16 outputs first information including the pre-interruption current value before the electric circuit was interrupted and the detection result indicating that an abnormality has been detected, and the second communication unit 27 outputs the first judgment result and the second judgment result to the server device 200, which is an external device (S22). The server device 200 acquires the first information, the first judgment result, and the second judgment result output by the first communication unit 16 and the second communication unit 27.

[0065] The server device 200 determines whether the abnormality detected by the detection unit 11 is due to a false detection, based on the acquired first information, the first determination result, and the second determination result (S24).

[0066] For example, when at least one of the first and second judgment results indicates that the abnormality is due to a false detection, the server device 200 may determine that the abnormality is due to a false detection. Also, for example, when both the first and second judgment results indicate that the abnormality is due to a false detection, the server device 200 may determine that the abnormality is due to a false detection.

[0067] Alternatively, for example, instead of S24, an administrator who manages the shutdown system 100 may determine whether or not the abnormality is due to a false detection based on the acquired first information, the first determination result, and the second determination result, and the determination result by the administrator may be acquired by the server device 200. In this case, the server device 200 determines whether or not the abnormality detected by the detection unit 11 is due to a false detection, according to the content indicated by the acquired determination result.

[0068] If the server device 200 determines that the abnormality is due to a false detection (Yes in S24), the server device 200 outputs second information for updating the detection software executed by the detection unit 11 to the first communication unit 16 (S26).

[0069] The second information is created by an administrator. The pre-interrupt current value indicated by the acquired first information is analyzed to create the second information for updating the detection software to prevent erroneous detection of an abnormality.

[0070] Then, the first communication unit 16 acquires the second information output from the server device 200.

[0071] In the main breaker 10, the first control unit 13 updates the detection software executed by the detection unit 11 based on the second information acquired by the first communication unit 16 (S28). By updating the detection software, the detection software becomes detection software that corresponds to the new type of load. By executing this updated detection software, the detection unit 11 does not erroneously detect an abnormality based on the acquired current value.

[0072] Furthermore, if the server device 200 determines that the abnormality is not due to erroneous detection (No in S24), the operation ends.

[0073] Here, the differences between the circuit breaker system 100 and the distribution board 50 according to this embodiment and the circuit breaker system and distribution board disclosed in Patent Document 1 will be described.

[0074] As described in the "Problem to be Solved by the Invention" section, new types of electrical appliances have been developed in recent years. For example, in a house, which is an example of building B, these electrical appliances are connected to an AC power source as loads. In the circuit breaker system and distribution board disclosed in Patent Document 1, the detection software for detecting abnormalities is not updated, and the detection software stored at the time of manufacture continues to be used without change. The detection software stored at the time of manufacture is used to detect abnormalities when an existing load is connected to the circuit breaker system and distribution board disclosed in Patent Document 1. Therefore, if the software is used when an electrical appliance (i.e., a new type of load) created after the circuit breaker system and distribution board disclosed in Patent Document 1 were manufactured is connected to an AC power source, there is a risk of frequent false detections. In other words, the detection software stored at the time of manufacture cannot be used to detect abnormalities when a new type of load is connected to the AC power source; in other words, it does not support new types of loads.

[0075] For the reasons described above, in a circuit breaker system and distribution board in which the detection software is not updated, as disclosed in Patent Document 1, there is a risk that false detections will occur frequently when a new type of load is used.

[0076] However, in this embodiment, the detection software executed by the detection unit 11 is updated. By updating the detection software, the detection software becomes detection software that corresponds to a new type of load. Even when the detection unit 11 executes this updated detection software, an abnormality is not erroneously detected based on the acquired current value.

[0077] Examples of updating the detection software include the following: As described above, an abnormality in the electrical circuit is detected when the acquired current value is greater or less than a predetermined threshold, but by updating the detection software, this predetermined threshold is changed.

[0078] 2 is performed again after the detection software has been updated (i.e., after the above-mentioned predetermined threshold value has been changed). In this case, even if a current value equivalent to the abnormal current value acquired in step S12 of the operation example before the detection software was updated is acquired in step S12 of the operation example after the detection software has been updated, the updated software is executed in step S14 and the abnormality is not detected. In other words, the occurrence of false detection is suppressed.

[0079] In summary, by updating the detection software, the occurrence of false detection can be suppressed even when a new type of load is connected to the AC power supply AC in the interruption system 100. In other words, the interruption system 100 is realized which can accurately detect abnormalities in the electric circuit.

[0080] In this operation example, in step S22, the first information is output from the first communication unit 16, and the first judgment result and the second judgment result are output from the second communication unit 27 to the server device 200, but this is not limited to this.

[0081] For example, the first information may be output from the first communication unit 16 to the server device 200 between steps S16 and S18, and the first determination result may be output from the second communication unit 27 to the server device 200 between steps S18 and S20. In such a case, only the second determination result is output from the second communication unit 27 to the server device 200 in step S22.

[0082] [Effects, etc.] As described above, the shutdown system 100 includes the acquisition unit 22, the detection unit 11, the shutdown unit 12, the communication unit (first communication unit 16), and the control unit (first control unit 13).

[0083] The acquisition unit 22 acquires the value of a current flowing through an electric path between the AC power supply AC and the load 31.

[0084] The detection unit 11 executes software (detection software) to detect an abnormality in the electric circuit based on the acquired current value.

[0085] The breaker 12 breaks the electrical path when an abnormality is detected.

[0086] The first communication unit 16 outputs first information including a pre-interruption current value before the electric circuit is interrupted and a detection result indicating that an abnormality has been detected.

[0087] When it is determined based on the pre-interruption current value that the abnormality indicated by the detection result is due to erroneous detection, the first control unit 13 updates the software (detection software).

[0088] As described above, in a circuit breaker system and a distribution board in which the detection software is not updated, such as that disclosed in Patent Document 1, there is a risk that false detections will occur frequently when a new type of load is used.

[0089] However, in this embodiment, the interruption system 100 has the above configuration, and the detection software executed by the detection unit 11 is updated. By updating the detection software, the detection software becomes detection software that corresponds to a new type of load. Even when the detection unit 11 executes this updated detection software, an abnormality is not erroneously detected based on the acquired current value.

[0090] When the detection software is updated, for example, the predetermined threshold value is changed. As a result, even if a current value equivalent to the abnormal current value is acquired in step S12 of the operation example after the detection software is updated, the updated software is executed in step S14 and the abnormality is not detected. In other words, the occurrence of false detection is suppressed.

[0091] In summary, by updating the detection software, the occurrence of false detection can be suppressed even when a new type of load is connected to the AC power supply AC in the interruption system 100. In other words, the interruption system 100 is realized which can accurately detect abnormalities in the electric circuit.

[0092] Further, for example, the communication unit (first communication unit 16) outputs first information to an external device (server device 200). The external device outputs second information for updating software (detection software) to the first communication unit 16. The first control unit 13 updates the detection software based on the second information acquired by the first communication unit 16.

[0093] That is, the first communication unit 16 acquires the second information output from the server device 200 installed outside the building B, and the detection software is updated based on the acquired second information. Therefore, even if the detected abnormality is determined to be a false detection, a service person or the like does not need to go to the building B where the shutdown system 100 is installed in order to update the detection software. In other words, the detection software can be easily updated.

[0094] Further, for example, the external device is a cloud server (server device 200).

[0095] This allows the first communication unit 16 to acquire the second information from the external device, which is the cloud server (server device 200).

[0096] The shutdown system 100 includes a determination unit that determines whether the abnormality is due to a false detection. The first communication unit 16 outputs a first determination result by the determination unit.

[0097] This allows for a more accurate determination of whether the abnormality is due to a false detection.

[0098] Furthermore, in this embodiment, the measurement unit 20 has the determination unit 23, so that the processing load on the main breaker 10 is reduced compared to when the main breaker 10 has the determination unit 23.

[0099] Furthermore, for example, the shutdown system 100 includes an input receiving unit 26 that receives, from a user, an operation indicating a second determination result as to whether or not the abnormality is due to a false detection. The first communication unit 16 outputs the second determination result indicated by the received operation.

[0100] This allows for a more accurate determination of whether the abnormality is due to a false detection.

[0101] Furthermore, for example, a distribution board 50 according to the present embodiment includes the above-described interruption system 100 and a distribution board cabinet 5 that stores the interruption system 100.

[0102] As described above, the circuit breaking system 100 can accurately detect abnormalities in the electric circuit. Therefore, the distribution board 50 including such a circuit breaking system 100 can also accurately detect abnormalities in the electric circuit.

[0103] (First Modification of the Embodiment) Next, a first modification of the embodiment will be described. The first modification of the embodiment is different from the embodiment mainly in that the main breaker 10a (first communication unit 16a) does not directly communicate with the server device 200. The following description will focus on the differences from the embodiment, and the description of the commonalities will be omitted or simplified.

[0104] An example of the configuration of an interruption system 100a according to the first modification of the embodiment will be described with reference to FIG.

[0105] FIG. 3 is a block diagram showing the functional configuration of an interruption system 100a according to the first modification of the present embodiment.

[0106] The distribution board 50a includes a breaker system 100a having a main breaker 10a and a measurement unit 20a, a plurality of branch breakers 30, and a distribution board cabinet 5.

[0107] The main breaker 10a has the same configuration as the main breaker 10, except that it has a first communication unit 16a instead of the first communication unit 16. Also, the measurement unit 20a has the same configuration as the measurement unit 20, except that it has a second communication unit 27a instead of the second communication unit 27.

[0108] In this modified example, there is no need for direct communication between the main breaker 10a (first communication unit 16a) and the server device 200. Information output from the first communication unit 16a reaches the server device 200 via the measurement unit 20a (second communication unit 27a). For example, first information is output from the first communication unit 16a to the second communication unit 27a, and the second communication unit 27a further outputs the first information to the server device 200. Also, for example, second information is output from the server device 200 to the second communication unit 27a, and the second communication unit 27a further outputs the second information to the first communication unit 16a.

[0109] In the first modification, the first communication unit 16a does not need to communicate directly with the server device 200, and therefore the processing load on the main breaker 10a is reduced.

[0110] (Modification 2 of the embodiment) Next, a second modification of the embodiment will be described. The second modification of the embodiment mainly differs from the embodiment in that the main breaker 10b has an acquisition unit 22. The following description will focus on the differences from the embodiment, and the description of the commonalities will be omitted or simplified.

[0111] [composition] An example of the configuration of an interruption system 100b according to the second modification of the embodiment will be described with reference to FIG.

[0112] FIG. 4 is a block diagram showing the functional configuration of an interruption system 100b according to the second modification of the present embodiment.

[0113] The distribution board 50b includes a breaker system 100b having a main breaker 10b, a plurality of branch breakers 30, and a distribution board cabinet 5.

[0114] The main breaker 10b includes a detection unit 11, a breaker unit 12, a first control unit 13b, a first memory unit 14b, a first communication unit 16b, a measurement unit 21, an acquisition unit 22, a judgment unit 23, and an input reception unit 26.

[0115] 4, the interruption system 100b includes a housing 1b, which is an example of a housing unit. The housing 1b houses the detection unit 11, the interruption unit 12, the first control unit 13b, the first storage unit 14b, the first communication unit 16b, the measurement unit 21, the acquisition unit 22, the determination unit 23, and the input reception unit 26.

[0116] The first control unit 13b performs the processing performed by the first control unit 13 and the second control unit 24 according to the embodiment. The first storage unit 14b stores information stored in the first storage unit 14 and the second storage unit 25 according to the embodiment. The first communication unit 16b performs the processing performed by the first communication unit 16 and the second communication unit 27 according to the embodiment.

[0117] That is, the main breaker 10b has a configuration in which the main breaker 10 according to the embodiment and the measurement unit 20 are integrated.

[0118] [Effects, etc.] In this modification, the interruption system 100b includes a housing unit (casing 1b). Casing 1b houses an acquiring unit 22, a detecting unit 11, an interruption unit 12, and a communication unit (first communication unit 16b). More specifically, housing 1b houses the detecting unit 11, the interruption unit 12, a first control unit 13b, a first storage unit 14b, a first communication unit 16b, a measuring unit 21, an acquiring unit 22, a determining unit 23, and an input receiving unit 26.

[0119] For example, compared to the case where two housings 1 and 2 are provided as shown in the embodiment, providing one housing 1b allows the distribution board 50b including the interruption system 100b to be made more compact. Furthermore, communication between the main breaker 10 (first communication unit 16) and the measurement unit 20 (second communication unit 27) shown in the above embodiment is no longer necessary, reducing the processing load on the main breaker 10b.

[0120] (Other embodiments) Although the embodiments have been described above, the present invention is not limited to the above-described embodiments.

[0121] The communication method between the devices described in the above embodiment is merely an example, and is not particularly limited to this.

[0122] In the above-described embodiment, the processing performed by a specific processing unit may be performed by another processing unit. The order of multiple processing operations may be changed, or multiple processing operations may be performed in parallel.

[0123] In the above-described embodiments, components such as the control unit may be realized by executing a software program suitable for each component. Each component may be realized by a program execution unit such as a CPU or processor reading and executing a software program recorded on a recording medium such as a hard disk or semiconductor memory.

[0124] Furthermore, components such as the control unit may be realized by hardware. For example, components such as the control unit may be circuits (or integrated circuits). These circuits may form a single circuit as a whole, or may be separate circuits. Furthermore, each of these circuits may be a general-purpose circuit or a dedicated circuit.

[0125] Furthermore, the general or specific aspects of the present invention may be realized as a system, device, method, integrated circuit, computer program, or computer-readable recording medium such as a CD-ROM. Also, the present invention may be realized as any combination of a system, device, method, integrated circuit, computer program, and recording medium. For example, the present invention may be realized as the distribution board or server device of the above-described embodiments, or as an information processing method executed by the distribution board. The present invention may be realized as a program for causing a computer to execute such an information processing method, or as a non-transitory recording medium on which such a program is recorded. Such programs include application programs for causing a computer, such as a general-purpose information terminal, to function as the server device of the above-described embodiments.

[0126] In addition, the present invention also includes forms obtained by applying various modifications to each embodiment that a person skilled in the art would think of, or forms realized by arbitrarily combining the components and functions of each embodiment within the scope that does not deviate from the spirit of the present invention. [Explanation of symbols]

[0127] 5 Distribution board cabinet 11. Detection unit 12 Breaker 22 Acquisition Department 23 Judgment Department 26 Input reception section 31 Load 50, 50a, 50b distribution board 100, 100a, 100b shutoff systems AC alternating current power supply

Claims

1. an acquisition unit that acquires a current value flowing in an electric path between the AC power supply and the load; a detection unit that executes software to detect an abnormality related to the electric circuit based on the acquired current value; a breaker that breaks the electrical path when the abnormality is detected; a communication unit that outputs first information including a pre-interruption current value before the electric circuit is interrupted and a detection result indicating that the abnormality has been detected; a control unit that updates the software when it is determined that the abnormality indicated by the detection result is due to an erroneous detection based on the pre-interruption current value; an input receiving unit that receives, from a user, an operation indicating a second determination result as to whether or not the abnormality is due to an erroneous detection, The communication unit outputs the second determination result indicated by the received operation. Shut-off system.

2. the communication unit outputs the first information to an external device; the communication unit acquires second information for updating the software from the external device; The control unit updates the software based on the second information acquired by the communication unit. The isolation system of claim 1 .

3. a determination unit that determines whether the abnormality is due to a false detection; The communication unit outputs a first determination result by the determination unit. The isolation system according to claim 1 or 2.

4. The device includes a housing unit that houses the acquisition unit, the detection unit, the interruption unit, and the communication unit. The isolation system according to any one of claims 1 to 3.

5. An interruption system according to any one of claims 1 to 4; a distribution board cabinet for storing the circuit breaker system; Distribution board.

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