Abnormal condition reporting device, abnormal condition reporting system, and abnormal condition reporting method

Abstract

To provide an abnormal condition reporting device that can quickly call an appropriate maintenance personnel by a simple method.SOLUTION: An abnormal condition reporting device includes: an abnormality determination unit that determines the cause of the abnormality based on data from a distribution line and a device installed in the distribution line; a memory unit that stores a plurality of reporting destinations; a selection unit that selects at least one or more of the plurality of destinations stored in the memory unit according to the cause of the abnormality determined by the abnormality determination unit; and a reporting unit that reports the cause of the abnormality to the selected destinations.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present disclosure relates to an abnormality status reporting device, an abnormality status reporting system, and an abnormality status reporting method, which detect accidents (abnormalities) such as power outages that occur in a power network (power distribution line) and notify maintenance personnel involved in responding to the accident of the occurrence of the abnormality. [Background technology]

[0002] When an accident such as a power outage occurs in a power network, it is necessary to quickly restore the system from the accident. The chief engineer in charge of the accident site must check the accident site, understand the details of the accident, select the maintenance personnel required for the accident restoration work, and confirm the contact information of the maintenance personnel. These tasks often take time, and the time required directly leads to a delay in restoration from the accident, which has been an issue.

[0003] In this regard, Patent Document 1 discloses a technique for selecting maintenance personnel required for restoration work from accident information acquired from outside and notifying the maintenance personnel. It discloses that the criteria for selecting maintenance personnel are taken into consideration, such as the geographical characteristics and weather conditions of the accident site, and the distance between the maintenance personnel candidates and the accident site, and that the selection is made so that the required numbers of work managers, live-line workers, and pole workers are met.

[0004] In addition, there are various causes of accidents such as power outages, including lightning strikes, cable deterioration, transformer or circuit breaker failures, and ground faults or short circuits caused by contact with animals or trees. When an accident occurs, a characteristic accident waveform is generated depending on the cause of the accident, and a method for estimating the cause of the accident based on this accident waveform is disclosed in Patent Document 2. In Patent Document 2, the zero-phase voltage waveform and the zero-phase current waveform at the time of the occurrence of a ground fault are subjected to waveform analysis from multiple viewpoints, and the obtained multiple analytical values ​​are input to a trained neural network model. As a result, the faulty phase is identified and the result of estimating the cause of the accident is output.

[0005] Furthermore, except for lightning strikes and the like, among these causes of accidents, ground faults do not occur suddenly, and an abnormal symptom phenomenon in which a small amount of leakage current flows often occurs prior to the occurrence of an accident. A technology for detecting this abnormal symptom is disclosed in Patent Document 3. Furthermore, Patent Document 3 discloses an example of a method for detecting a symptom caused by tree contact. Specifically, according to this document, the magnitude of the zero-phase voltage, the magnitude of the zero-phase current, and the phase difference between the zero-phase voltage and the zero-phase current are measured at each set period in multiple child stations arranged at appropriate locations on the distribution line. The central monitoring system receives these detection values ​​from each child station via network communication, and determines that the distribution line is in contact with a tree when there is a time change in these detection values ​​that monotonically increases or decreases over a period of several minutes to several tens of minutes. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] JP 2008-287444 A [Patent Document 2] Japanese Patent Application Publication No. 11-142466 [Patent Document 3] Patent No. 4142608 Summary of the Invention [Problem to be solved by the invention]

[0007] There are various causes for accidents such as power outages, but the maintenance personnel and equipment required to restore power will vary depending on the cause of the accident.

[0008] However, in the technology disclosed in Patent Document 1, the cause of the accident is not notified, so the chief engineer who receives the accident report must check the accident site and determine the cause of the accident. Therefore, if maintenance personnel are selected when the cause of the accident is undetermined, there is a possibility that more maintenance personnel and equipment than necessary will be selected, or that the necessary maintenance personnel and equipment cannot be selected, resulting in a shortage.

[0009] On the other hand, if the chief engineer checks the accident site, determines the cause of the accident, and then selects the maintenance personnel required to restore the accident, it takes time to select the maintenance personnel to perform the restoration work, which causes a problem of delaying restoration. Also, if abnormal signs that are precursors to an accident can be detected, maintenance work can be performed before an accident actually occurs, and accidents can be prevented in advance. The technology disclosed in Patent Document 2 can detect abnormal signs, but it is not a technology for the chief engineer who receives a report of the abnormal signs to select the necessary and sufficient maintenance personnel and maintenance equipment. In order to select the necessary and sufficient maintenance personnel and maintenance equipment for the reported abnormal signs, the chief engineer needs to make a judgment, which is a problem that takes time.

[0010] The present disclosure is intended to solve the above-mentioned problems, and provides an abnormal condition reporting device, an abnormal condition reporting system, and an abnormal condition reporting method that are capable of quickly calling appropriate maintenance personnel in a simple manner. [Means for solving the problem]

[0011] The abnormal condition reporting device disclosed herein includes an abnormality determination unit that determines the cause of the abnormality based on data from a distribution line and a device installed on the distribution line, a memory unit that stores a plurality of reporting destinations, a selection unit that selects at least one reporting destination from the plurality of reporting destinations stored in the memory unit in accordance with the cause of the abnormality determined by the abnormality determination unit, and a reporting unit that notifies the reporting destination selected by the selection unit of the cause of the abnormality.

[0012] The abnormal condition reporting system of the present disclosure includes a power distribution line, a device provided on the power distribution line, and the abnormal condition reporting device described above.

[0013] The abnormal condition reporting method disclosed herein includes a step of determining a cause of the abnormality based on data from a power distribution line and a device installed on the power distribution line, a step of selecting at least one or more report destinations from among a plurality of report destinations stored in a memory unit according to the determined cause of the abnormality, and a step of notifying the selected report destination of the cause of the abnormality. Effect of the Invention

[0014] The abnormal condition reporting device, abnormal condition reporting system, and abnormal condition reporting method disclosed herein make it possible to quickly call appropriate maintenance personnel in a simple manner. [Brief description of the drawings]

[0015] [Figure 1] FIG. 1 is a diagram illustrating a configuration of an abnormal condition reporting system 1 according to a first embodiment. [Diagram 2] 2 is a functional block diagram illustrating a configuration of an abnormal condition reporting device 20 according to the first embodiment. FIG. [Diagram 3] 5 is a diagram illustrating determination of a cause of an abnormality in abnormality determination unit 203 according to the first embodiment. FIG. [Figure 4] FIG. 2 is a diagram illustrating a first destination storage unit 202 according to the first embodiment. [Diagram 5] FIG. 11 is a diagram illustrating a second destination storage unit 204 according to the first embodiment. [Figure 6] FIG. 11 is a functional block diagram illustrating a configuration of an abnormal condition reporting device 20# according to a second embodiment. [Figure 7] FIG. 11 is a flow diagram illustrating a reporting process of a reporting unit 208# according to the second embodiment. [Figure 8] FIG. 11 is a diagram illustrating a reporting timing of a reporting unit 208# according to the second embodiment. [Figure 9] FIG. 13 is a flow diagram illustrating a reporting process of a reporting unit 208# according to a variation of the second embodiment. [Figure 10] FIG. 13 is a diagram illustrating a reporting timing of a reporting unit 208# according to the third embodiment. [Figure 11] FIG. 11 is a flow diagram illustrating a reporting process of a reporting unit 208# according to the third embodiment. [Figure 12] FIG. 13 is a diagram illustrating a report history in a report history storage unit 205 according to the third embodiment. [Figure 13] FIG. 13 is another diagram illustrating the report history in report history storage unit 205 according to the third embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0016] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In the following, the same or corresponding parts in the drawings are given the same reference characters, and their description will not be repeated in principle.

[0017] Embodiment 1 Hereinafter, an embodiment of the invention will be described with reference to the drawings.

[0018] FIG. 1 is a diagram illustrating a configuration of an abnormal condition reporting system 1 according to the first embodiment.

[0019] With reference to FIG. 1, an abnormal condition reporting system 1 according to a first embodiment reports an abnormal condition of a power distribution line 2. As shown in FIG.

[0020] The distribution line 2 is provided with a voltage / current sensor 10 for detecting the voltage and / or current of the distribution line 2, a switch / circuit breaker 12, and the like. The voltage / current sensor 10 is connected to a distribution line monitoring device 101. The switch / circuit breaker 12 is connected to an equipment monitoring device 102.

[0021] Data from the distribution line 2 and devices provided on the distribution line 2 are output from the distribution line monitoring device 101 and the facility monitoring device 102 to the abnormal state reporting device 20.

[0022] The abnormality status reporting device 20 detects an abnormality based on data from the power distribution line monitoring device 101 and the facility monitoring device 102, determines the cause and level of the abnormality, and reports the occurrence of the abnormality to maintenance personnel involved in responding to the accident.

[0023] The power distribution line monitoring device 101 and the facility monitoring device 102 may be part of a protective relay. A protective relay detects abnormalities such as power outages by monitoring the voltage and current of the power distribution line, and controls switches and circuit breakers.

[0024] Causes of abnormalities include deterioration of distribution lines, fallen trees, contact with animals, etc. In the case of abnormalities caused by deterioration of distribution lines, fallen trees, or contact with animals, characteristic waveforms are observed in the voltage and current of the distribution line, and the cause of the abnormality can be determined by analyzing these waveforms. Even if a power outage has not occurred, characteristic waveforms are observed in the voltage and current of the distribution line, and the level of abnormality signs can be determined by analyzing the magnitude and frequency of these waveforms.

[0025] In addition, with regard to abnormalities caused by equipment failures such as switches and circuit breakers, the cause of the abnormality and the level of the abnormality symptoms can be determined by monitoring the control voltage and control current of the equipment.

[0026] It is generally believed that as the level of abnormal symptoms increases, the probability of an accident such as a power outage or equipment failure occurring increases, or the time until an accident such as a power outage or equipment failure occurs decreases.

[0027] It is also possible to determine the cause of an abnormality or the level of an abnormal symptom by including information from environmental sensors such as a temperature and humidity sensor, a discharge sensor, etc. By monitoring this sensor information, the cause of an abnormality or the level of an abnormal symptom may be determined.

[0028] FIG. 2 is a functional block diagram illustrating a configuration of abnormal condition reporting device 20 according to the first embodiment.

[0029] Referring to FIG. 2, abnormal condition reporting device 20 includes a memory unit 201 that stores a plurality of reporting destinations, an abnormality determination unit 203 that determines a cause of the abnormality based on data from the distribution line and a device provided on the distribution line, a selection unit 206 that selects at least one reporting destination from the plurality of reporting destinations stored in memory unit 201 in accordance with the cause of the abnormality determined by abnormality determination unit 203, and a reporting unit 208 that notifies the reporting destination selected by selection unit 206 of the cause of the abnormality.

[0030] The abnormality determination unit 203 includes an abnormality cause determination unit 203A that determines the cause of the abnormality, and an abnormality level determination unit 203B that determines the level of the abnormality.

[0031] The storage unit 201 includes a first report destination storage unit 202 that stores a plurality of first report destinations, and a second report destination storage unit 204 that stores information on a second report destination that is a report destination from the first report destination.

[0032] The first report destination storage unit 202 stores a first report destination to which a report is to be sent when a cause of an abnormality is determined.

[0033] The second report destination storage unit 204 stores, for each cause of anomaly, information on the second report destination, which is a list of candidates to which the first report destination may contact the anomaly information.

[0034] FIG. 3 is a diagram illustrating determination of the cause of anomaly in abnormality determination unit 203 according to the first embodiment.

[0035] Referring to FIG. 3(a), the zero-sequence current waveform and the content of high-order harmonics during an earth fault when an animal comes into contact with a distribution line are shown.

[0036] Referring to FIG. 3(B), the zero-phase current waveform and the content of high-order harmonics during a ground fault when the cable is damaged are shown.

[0037] Referring to FIG. 3(C), there is shown a zero-phase current waveform and a content rate of high-order harmonics when a ground fault occurs due to an internal defect in the lightning arrester.

[0038] Referring to FIG. 3(D), there is shown a zero-phase current waveform and a content rate of high-order harmonics at the time of a ground fault in the case of a faulty cable.

[0039] Causes of abnormalities include deterioration of distribution lines, fallen trees, contact with animals, internal equipment malfunctions, etc. In the case of abnormalities caused by deterioration of distribution lines, fallen trees, contact with animals, internal equipment malfunctions, etc., characteristic waveforms are seen in the voltage and current of the distribution line as shown above, and by analyzing these waveforms, it is possible to determine the cause of the abnormality. Even if a power outage has not occurred, characteristic waveforms are seen in the voltage and current of the distribution line, and by analyzing the magnitude and frequency of these waveforms, it is possible to determine the level of abnormality signs (abnormality level).

[0040] In this example, the abnormality cause determination unit 203A determines the cause of the abnormality based on data from the distribution line and devices installed on the distribution line. Specifically, the abnormality cause determination unit 203A determines the cause of the abnormality based on characteristic waveforms of the voltage and current of the distribution line. The abnormality level determination unit 203B determines the level of the abnormality symptom (abnormality level) by analyzing the magnitude and frequency of the waveform. There are various methods for determining the abnormality cause and abnormality level, and the method is not limited to the above.

[0041] FIG. 4 is a diagram illustrating first destination storage unit 202 according to the first embodiment. With reference to FIG. 4, first report destination storage unit 202 stores a plurality of first report destinations.

[0042] Specifically, a case is shown in which the first reporting destination varies depending on the cause of the abnormality. Specifically, in the case of abnormality cause E1, the chief engineer PB is notified. In the case of abnormality cause E2, the chief engineer PC is notified. In the case of abnormality cause E3, the chief engineer PD is notified.

[0043] In addition, in this example, the report destination is changed according to the abnormality level.

[0044] Specifically, in the case of abnormality cause E1 and abnormality level L1, a report is sent to the chief engineer PB. In the case of abnormality cause E2 and abnormality level L1, a report is sent to the chief engineer PC. In the case of abnormality cause E3 and abnormality level L1, a report is sent to the chief engineer PD. A case is also shown in which a report is sent to the same chief engineer in the case of abnormality level L2.

[0045] On the other hand, in the case of abnormality level L3, in addition to Chief Engineer PB, Chief Engineer PC, and Chief Engineer PD, who report in the case of abnormality causes E1, E2, and E3, the case is shown where Chief Engineer PA is also notified.

[0046] For example, if the abnormality level rises, that is, if the abnormality level reaches L3, it is possible to notify the chief engineer PA who manages the entire system.

[0047] In this example, the case where the report destination is the same for abnormal levels L1 and L2 is shown as an example, but the report destination may be changed.

[0048] Furthermore, even if the cause of the abnormality is different, the first report destination may be the same, and the first report destination may be changed when the abnormality level changes.

[0049] Alternatively, the first report destination may be the same even when the abnormality level is different, and the first report destination may be changed when the cause of the abnormality is different.

[0050] In this example, the case where a chief engineer is registered is described, however, someone other than the chief engineer may be registered, and multiple people may be stored rather than just one.

[0051] For example, the selection unit 206 selects at least one report destination from among the multiple report destinations stored in the first report destination storage unit 202 of the storage unit 201 according to the cause of the abnormality determined by the abnormality determination unit 203 .

[0052] The selection unit 206 selects a chief engineer PB according to the abnormality cause E1 determined by the abnormality determination unit 203. The notification unit 208 notifies the chief engineer PB selected by the selection unit 206 of the abnormality cause E1.

[0053] The selection unit 206 selects a chief engineer PC according to the abnormality cause E2 determined by the abnormality determination unit 203. The notification unit 208 notifies the chief engineer PC selected by the selection unit 206 of the abnormality cause E2.

[0054] Furthermore, the selection unit 206 selects the chief engineers PA and PB according to the abnormality cause E1 and the abnormality level L3 determined by the abnormality determination unit 203. The notification unit 208 notifies the chief engineers PA and PB selected by the selection unit 206 of the abnormality cause E1.

[0055] Furthermore, the selection unit 206 selects the chief engineers PA and PC according to the abnormality cause E2 and the abnormality level L3 determined by the abnormality determination unit 203. The notification unit 208 notifies the chief engineers PA and PC selected by the selection unit 206 of the abnormality cause E1.

[0056] FIG. 5 is a diagram illustrating second destination storage unit 204 according to the first embodiment. With reference to FIG. 5, second report destination storage unit 204 stores a plurality of second report destinations.

[0057] Specifically, the case is shown in which the second reporting destination varies depending on the cause of the abnormality. Specifically, for the cause of abnormality E1, the local maintenance personnel and contact information are registered. For the cause of abnormality E2, the local maintenance personnel and contact information are registered. For the cause of abnormality E3, the local maintenance personnel and contact information are registered.

[0058] In addition, in this example, the report destination is changed according to the abnormality level.

[0059] Specifically, in the case of abnormality cause E1 and abnormality level L2, the contact information of the regional maintenance personnel, the assistant maintenance personnel for cable replacement work, the assistant maintenance personnel for high-altitude work, and each person is registered. In the case of abnormality cause E2 and abnormality level L2, the contact information of the regional maintenance personnel, the assistant maintenance personnel for circuit breaker replacement work, and each person is registered. In the case of abnormality cause E3 and abnormality level L2, the contact information of the regional maintenance personnel, the assistant maintenance personnel for transformer replacement work, and each person is registered.

[0060] In addition, in the case of abnormality cause E1 and abnormality level L3, the contact information of the local maintenance personnel, the auxiliary maintenance personnel for cable replacement work, the auxiliary maintenance personnel for high-altitude work, the relevant equipment personnel, and each person is registered. In the case of abnormality cause E2 and abnormality level L3, the contact information of the local maintenance personnel, the auxiliary maintenance personnel for circuit breaker replacement work, the relevant equipment personnel, the circuit breaker manufacturer's personnel, and each person is registered. In the case of abnormality cause E3 and abnormality level L3, the contact information of the local maintenance personnel, the auxiliary maintenance personnel for transformer replacement work, the relevant equipment personnel, the transformer manufacturer's personnel, and each person is registered.

[0061] For example, the selection unit 206 extracts information on the second report destination stored in the second report destination storage unit 204 of the storage unit 201 according to the cause of the abnormality determined by the abnormality determination unit 203 .

[0062] The selection unit 206 extracts the local maintenance personnel and contact information according to the abnormality cause E1 and the abnormality level L1 determined by the abnormality determination unit 203. The notification unit 208 notifies the chief engineer PB extracted by the selection unit 206 of the local maintenance personnel and contact information together with the abnormality cause E1.

[0063] As a result, the chief engineer PB is notified of the cause of the abnormality E1, as well as the local maintenance personnel and contact information, enabling subsequent maintenance measures to be taken quickly.

[0064] The selection unit 206 extracts the local maintenance personnel, the assistant maintenance personnel for cable replacement work, the assistant maintenance personnel for high-altitude work, and their respective contact information according to the abnormality cause E1 and abnormality level L2 determined by the abnormality determination unit 203. The reporting unit 208 notifies the chief engineer PB extracted by the selection unit 206 of the local maintenance personnel, the assistant maintenance personnel for cable replacement work, the assistant maintenance personnel for high-altitude work, and their respective contact information together with the abnormality cause E1.

[0065] As a result, the chief engineer PB is notified of the cause of the abnormality E1, as well as the regional maintenance personnel, the auxiliary maintenance personnel handling the cable replacement work, the auxiliary maintenance personnel handling work at height, and each person's contact information, enabling subsequent maintenance response to be carried out quickly.

[0066] The selection unit 206 extracts the contact information of the regional maintenance personnel, the assistant maintenance personnel for cable replacement work, the assistant maintenance personnel for work at height, the relevant equipment personnel, and each person according to the abnormality cause E1 and abnormality level L3 determined by the abnormality determination unit 203. The reporting unit 208 notifies the chief engineer PB extracted by the selection unit 206 of the abnormality cause E1, as well as the contact information of the regional maintenance personnel, the assistant maintenance personnel for cable replacement work, the assistant maintenance personnel for work at height, the relevant equipment personnel, and each person.

[0067] As a result, chief engineer PB is notified of the cause of the abnormality E1, as well as the local maintenance personnel, the auxiliary maintenance personnel handling the cable replacement work, the auxiliary maintenance personnel handling work at height, the relevant equipment personnel, and each person's contact information, enabling subsequent maintenance responses to be carried out swiftly.

[0068] In this example, the case of abnormality cause E1 and abnormality levels L1 to L3 has been described, but the same applies to other abnormality causes E2 and E3.

[0069] The maintenance personnel in charge of each area may be different depending on the cause of the abnormality, or may be the same.

[0070] The contact information of each person may be information on a contact method such as a telephone number or email address of the report destination. Also, information on multiple people may be stored.

[0071] The method according to the first embodiment makes it possible to quickly call appropriate maintenance personnel in a simple manner according to the cause of the abnormality. Also, it is possible to quickly call appropriate maintenance personnel in a simple manner according to the abnormality level.

[0072] Embodiment 2 FIG. 6 is a functional block diagram illustrating a configuration of an abnormal condition reporting device 20# according to the second embodiment.

[0073] Referring to Figure 6, abnormal condition reporting device 20# differs from abnormal condition reporting device 20 described in Figure 2 in that memory unit 201 is replaced with memory unit 201# and reporting unit 208 is replaced with reporting unit 208#.

[0074] Compared to storage unit 201, storage unit 201# includes a reporting period storage unit 207 and a reporting history storage unit 205.

[0075] The notification cycle storage unit 207 stores information relating to the shortest period for notification. The report history storage unit 205 stores the report history information.

[0076] The other configurations are similar and therefore will not be described in detail again. In this example, reporting unit 208# determines whether or not to report the information stored in report history storage unit 205 and report cycle storage unit 207.

[0077] FIG. 7 is a flow diagram illustrating reporting processing by reporting unit 208# according to the second embodiment.

[0078] Reporting unit 208# notifies the report destination selected by selection unit 206 of the cause of the abnormality. 7, reporting unit 208# obtains information on the shortest period for reporting from reporting period storage unit 207 (step S2).

[0079] Next, reporting unit 208# reads out the previous reporting time (step S4). Specifically, reporting unit 208# refers to report history storage unit 205 and reads out the previous reporting time from the history information.

[0080] Next, reporting unit 208# determines whether or not the minimum period for reporting has elapsed since the previous reporting time (step S6).

[0081] In step S6, if reporting unit 208# determines that the shortest period for reporting has elapsed since the previous reporting time (YES in step S6), it executes reporting processing to notify the selected reporting destination of the cause of the abnormality (step S8).

[0082] Then, reporting unit 208# overwrites and updates the previous report time (step S10). Then, the process ends (END).

[0083] On the other hand, in step S6, if reporting unit 208# determines that the shortest period for reporting has not elapsed since the previous reporting time (NO in step S6), it ends the reporting process (END).

[0084] The reporting period storage unit 207 stores in advance information on the shortest period for reporting an abnormal state to the first reporting destination.

[0085] An abnormality whose level is the level of an accident such as a power outage will not occur repeatedly until recovery work is carried out, but an abnormality whose level is the level of an abnormal symptom that has not yet reached the level of an accident such as a power outage may occur repeatedly.

[0086] As a result, the reporting unit may report to the first reporting destination frequently about abnormalities at the level of abnormal signs. Therefore, in the second embodiment, information on the shortest period for reporting is preset in the reporting period storage unit 207.

[0087] FIG. 8 is a diagram illustrating the reporting timing of reporting unit 208# according to the second embodiment.

[0088] 8A, a case is shown in which an abnormality is reported at times T1, T2, and T3. The intervals between times T1, T2, and T3 are longer than the shortest period for reporting.

[0089] This makes it possible to suppress high frequency of notifications and quickly call appropriate maintenance personnel in a simple manner.

[0090] Referring to FIG. 8(B), when a report is received that is shorter than the shortest period for reporting, the reports may be stored and reported together later.

[0091] In this example, after an abnormality is reported at time T4, the contents of abnormalities reported at times T5 and T6 are reported together at time T7.

[0092] FIG. 9 is a flow diagram illustrating a reporting process of reporting unit 208# according to the variation of the second embodiment.

[0093] Referring to FIG. 9, reporting unit 208# obtains information on the shortest period for reporting from reporting period storage unit 207 (step S2).

[0094] Next, reporting unit 208# reads out the previous reporting time (step S4). Specifically, reporting unit 208# refers to report history storage unit 205 and reads out the previous reporting time from the history information.

[0095] Next, reporting unit 208# determines whether or not the minimum period for reporting has elapsed since the previous reporting time (step S6).

[0096] In step S6, when reporting unit 208# determines that the shortest period for reporting has not elapsed since the previous reporting time (NO in step S6), it stores the detection result in storage unit 201# as unsent (step S12). Then, the process ends (END).

[0097] On the other hand, in step S6, if reporting unit 208# determines that the shortest period for reporting has elapsed since the last reporting time (YES in step S6), it then determines whether the detection result saved as unsent is saved in memory unit 201# (step S7).

[0098] In step S7, if reporting unit 208# determines that the detection result saved as unsent is not saved in memory unit 201# (NO in step S7), it executes reporting processing to notify the selected reporting destination of the cause of the abnormality (step S8).

[0099] Then, reporting unit 208# overwrites and updates the previous report time (step S10). Then, the reporting process ends (END).

[0100] On the other hand, in step S7, if reporting unit 208# determines that the detection result saved as unsent is saved in memory unit 201# (YES in step S7), it reads out the unsent detection result from memory unit 201# and reports it to the currently selected reporting destination by including it in the reporting process that notifies the cause of the abnormality (step S14).

[0101] Then, reporting unit 208# overwrites and updates the previous report time (step S10). Then, the reporting process ends (END).

[0102] This makes it possible to suppress high frequency of notifications and quickly call appropriate maintenance personnel in a simple manner.

[0103] Embodiment 3 Even if an abnormality with the same cause is repeatedly reported frequently, it is not new abnormality information for the first report destination and is not a useful report, but a report of an abnormality with a different cause is new abnormality information for the first report destination and is therefore useful information.

[0104] Therefore, the notification cycle storage unit 207 may be configured to set the shortest period for notifying each cause of an abnormality. In other words, when the causes of an abnormality are different, it is possible to confirm the shortest period for notifying each cause of an abnormality and then notify the cause of the abnormality.

[0105] FIG. 10 is a diagram illustrating the reporting timing of reporting unit 208# according to the third embodiment.

[0106] 10A shows cases where abnormalities are reported at times T8, T9, and T10. The cases shown are for the reports at times T8 and T9 because they are reports of abnormalities with different causes. The case shown is for the report at time T10 because the shortest period for reporting starting from time T8 has elapsed.

[0107] This makes it possible to suppress high frequency of notifications and quickly call appropriate maintenance personnel in a simple manner.

[0108] Referring to FIG. 10(B), if the abnormality level changes even within the shortest period for reporting, the abnormality information is new and useful to the first reporting destination.

[0109] Therefore, when the abnormality levels are different, a notification may be sent. FIG. 11 is a flow diagram illustrating a reporting process of reporting unit 208# according to the third embodiment.

[0110] Referring to FIG. 11, reporting unit 208# notifies the report destination selected by selection unit 206 of the cause of the abnormality.

[0111] Reporting unit 208# acquires information on the shortest period for reporting from reporting period storage unit 207 (step S2).

[0112] Next, reporting unit 208# reads out the previous reporting time (step S4). Specifically, reporting unit 208# refers to report history storage unit 205 and reads out the previous reporting time from the history information.

[0113] Next, reporting unit 208# determines whether or not the minimum period for reporting has elapsed since the previous reporting time (step S6).

[0114] In step S6, if reporting unit 208# determines that the shortest period for reporting has elapsed since the previous reporting time (YES in step S6), it executes reporting processing to notify the selected reporting destination of the cause of the abnormality (step S8).

[0115] Then, reporting unit 208# overwrites and updates the previous report time (step S10). Then, the process ends (END).

[0116] On the other hand, if reporting unit 208# determines in step S6 that the shortest period for reporting has not elapsed since the previous reporting time (NO in step S6), it determines whether the abnormality level has increased (step S15).

[0117] In step S15, when it is determined that the abnormality level has increased (YES in step S15), reporting unit 208# executes a reporting process to notify the selected reporting destination of the cause of the abnormality (step S8). The subsequent processes are similar.

[0118] In step S15, if reporting unit 208# determines that the abnormality level has not increased (NO in step S15), it ends the process (END).

[0119] By this process, when the abnormality level is rising, it becomes possible to report abnormality information even within the shortest reporting period.

[0120] This allows for a simple method of quickly summoning appropriate maintenance personnel. FIG. 12 is a diagram illustrating the report history in report history storage unit 205 according to the third embodiment.

[0121] FIG. 13 is another diagram illustrating the report history in report history storage unit 205 according to the third embodiment.

[0122] Specifically, for abnormality causes E1, E2, and E3, the report times of abnormality levels L1, L2, and L3 are registered, respectively.

[0123] When an abnormality is detected, the cause of the abnormality and the time of notification are registered in the abnormality determination history storage unit 209 for each abnormality level, as shown in FIG. 12 and FIG.

[0124] 12, the minimum reporting time is set to 3 hours. For example, assuming that an abnormality level L1 of an abnormality cause E1 occurs at 19:00 on May 10, 2023, it is determined that the minimum reporting period has not elapsed since the previous reporting time (18:00 on May 10, 2023) (NO in step S6), and it is also determined that the abnormality level has not increased (NO in step S15), so the reporting time of the abnormality level L1 of the abnormality cause E1 is not updated.

[0125] 12 and 13, the minimum reporting time is set to 3 hours. For example, assuming that an abnormality level L2 of abnormality cause E1 occurs at 19:00 on May 10, 2023, it is determined that the minimum reporting period has not elapsed since the previous reporting time (18:00 on May 10, 2023) (NO in step S6), and it is determined that the abnormality level has increased (YES in step S15), and the reporting time of abnormality level L2 of abnormality cause E1 is updated. In this case, the display changes from FIG. 12 to FIG. 13.

[0126] 13, the minimum reporting time is set to 3 hours. For example, assuming that an abnormality level L1 of an abnormality cause E1 occurs at 21:00 on May 10, 2023, it is determined that the minimum reporting period has not elapsed since the previous reporting time (19:00 on May 10, 2023) (NO in step S6), and it is also determined that the abnormality level has not increased (NO in step S15), so the reporting time of the abnormality level L1 of the abnormality cause E1 is not updated.

[0127] This allows for a simple method of quickly summoning appropriate maintenance personnel. The embodiments disclosed herein are also intended to be combined appropriately within a range that is not inconsistent. The embodiments disclosed herein should be considered to be illustrative and not restrictive in all respects. The scope of the present disclosure is indicated by the claims, not the above description, and is intended to include all modifications within the meaning and scope of the claims. [Explanation of symbols]

[0128] 1 Abnormal condition reporting system, 2 Power distribution line, 10 Voltage / current sensor, 12 Switch / circuit breaker, 20 Abnormal condition reporting device, 101 Power distribution line monitoring device, 102 Equipment monitoring device, 201 Memory unit, 202 First reporting destination memory unit, 203 Abnormality determination unit, 203A Abnormality cause determination unit, 203B Abnormality level determination unit, 204 Second reporting destination memory unit, 205 Report history memory unit, 206 Selection unit, 207 Report period memory unit, 208 Report unit.

Claims

1. an abnormality determination unit that determines a cause of an abnormality based on data from a distribution line and a device provided on the distribution line; A storage unit that stores a plurality of report destinations; a selection unit that selects at least one report destination from among a plurality of report destinations stored in the storage unit according to the cause of the abnormality determined by the abnormality determination unit; and a reporting unit that notifies the cause of the abnormality to the reporting destination selected by the selection unit.

2. The storage unit is a first report destination storage unit that stores a plurality of first report destinations; a second report destination storage unit configured to store information on a second report destination to which a report is sent from each of the first report destinations; The selection unit selects a first report destination from the first report destination storage unit according to a cause of the abnormality determined by the abnormality determination unit, and extracts information of a second report destination from the second report destination storage unit; 2 . The abnormal condition reporting device according to claim 1 , wherein the reporting unit notifies the first reporting destination selected by the selection unit of the cause of the abnormality and information on the extracted second reporting destination.

3. The second normal destination storage unit stores information on second notification destinations classified corresponding to a plurality of abnormality causes, 3. The abnormal condition reporting device according to claim 2, wherein the selection unit selects a first report destination from the first report destination memory unit according to the cause of the abnormality determined by the abnormality determination unit, and extracts information on a second report destination corresponding to the cause of the abnormality from the second report destination memory unit.

4. the abnormality determination unit determines a cause of an abnormality and an abnormality level of the cause of the abnormality based on data from the power distribution line and a device provided on the power distribution line; the second report destination storage unit stores information on second report destinations classified according to a plurality of abnormality causes and abnormality levels of the abnormality causes, 4. The abnormal condition reporting device according to claim 3, wherein the selection unit selects a first report destination from the first report destination memory unit in accordance with the cause of the abnormality determined by the abnormality determination unit, and extracts information on a second report destination corresponding to the cause of the abnormality and the abnormality level from the second report destination memory unit.

5. The first report destination storage unit stores the first report destinations classified corresponding to a plurality of abnormality causes, 3. The abnormal condition reporting device according to claim 2, wherein the selection unit selects a first report destination corresponding to the cause of the abnormality from the first report destination memory unit according to the cause of the abnormality determined by the abnormality determination unit, and extracts information of a second report destination from the second report destination memory unit.

6. the abnormality determination unit determines a cause of an abnormality and an abnormality level of the cause of the abnormality based on data from the power distribution line and a device provided on the power distribution line; the first report destination storage unit stores the first report destinations classified according to the causes of abnormality and the abnormality levels of the causes of abnormality, 6. The abnormal condition reporting device as described in claim 5, wherein the selection unit selects a first report destination corresponding to the cause of the abnormality and the abnormality level from the first report destination memory unit according to the cause of the abnormality determined by the abnormality determination unit, and extracts information of a second report destination from the second report destination memory unit.

7. A history storage unit that stores a notification history of notifications made by the notification unit to a notification destination, The reporting unit includes: determining whether the notification destination selected by the selection unit is stored in the history storage unit; If the same notification destination as the previous notification is stored in the notification history, it is determined whether a predetermined period of time has passed since the previous notification; The abnormal state reporting device according to claim 1 , wherein the reporting unit reports the cause of the abnormality to a notification destination selected by the selection unit based on a result of the determination.

8. The reporting unit includes: determining whether the notification destination selected by the selection unit is stored in the history storage unit; If the same notification destination as the previous notification is stored in the notification history, it is determined whether a predetermined period corresponding to the cause of the abnormality has elapsed since the previous notification; 8. The abnormal state reporting device according to claim 7, wherein the reporting unit reports the cause of the abnormality to a notification destination selected by the selection unit based on a result of the determination.

9. the abnormality determination unit determines a cause of an abnormality and an abnormality level of the cause of the abnormality based on data from the power distribution line and a device provided on the power distribution line; The reporting unit includes: determining whether the notification destination selected by the selection unit is stored in the history storage unit; If the same notification destination as the previous notification is stored in the notification history, it is determined whether a predetermined period corresponding to the cause of the abnormality has elapsed since the previous notification; If the predetermined period has elapsed, notifying the notification destination selected by the selection unit of the cause of the abnormality; If it is within the predetermined period and the abnormality level has not increased, the notification destination selected by the selection unit is not notified of the cause of the abnormality, 9. The abnormality reporting device according to claim 8, wherein, if the abnormality level is increasing within the predetermined period, the cause of the abnormality is notified to a notification destination selected by the selection unit.

10. the distribution line and a device provided on the distribution line; An abnormal condition reporting system comprising the abnormal condition reporting device according to any one of claims 1 to 9.

11. determining a cause of an anomaly based on data from the distribution line and devices installed on the distribution line; selecting at least one report destination from among a plurality of report destinations stored in a storage unit according to the determined cause of the abnormality; and notifying a selected notification destination of the cause of the abnormality.

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