Distribution network fault outage perception and analysis method and equipment

Abstract

The present invention discloses a distribution network fault power outage perception analysis method and device, and the distribution network fault power outage perception analysis method comprises: collecting and obtaining power outage alarm signals of different terminals under the same line according to the power outage alarm signal to obtain multiple power outage alarm signals; eliminating multiple power outage alarm signals according to preset screening rules to obtain power outage alarm events; obtaining the topological relationship corresponding to the power outage alarm event, obtaining according to the topological relationship and determining whether the corresponding upper branch switch is a suspected fault device according to the number of upper branch switches, the number of terminals connected to the upper branch switch, the number of alarm terminals and the preset number threshold to generate a suspected fault power outage alarm event; obtaining and obtaining the final power outage alarm event according to the power outage alarm event set and the power outage alarm event set; determining the communication information corresponding to the final power outage alarm event according to the final power outage alarm event and the preset database. The present invention improves the judgment accuracy of the fault power outage alarm event.

Description

Technical Field

[0001] The present invention relates to the technical field of power distribution networks, and in particular to a method and device for sensing and analyzing power outages caused by faults in a power distribution network. Background Art

[0002] Most of the existing power outage perception and analysis methods are based on the power outage signals of a single automation system for judgment and processing, without making auxiliary judgments based on real-time voltage and current data and alarm signals from other automation systems. In addition, most of them identify and analyze relevant alarm signals after power is restored, and the processing methods for some error signals and false signals are too simple, resulting in low accuracy, poor real-time performance, and a narrow scope of data applicability. It is unable to effectively support service dispatching to carry out active early warning services for fault power outages. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a distribution network fault power outage perception analysis method, which can improve the accuracy of fault power outage perception.

[0004] The invention also provides an electronic control device.

[0005] In a first aspect, an embodiment of the present invention provides a distribution network fault power outage perception and analysis method, comprising:

[0006] Collecting a power outage alarm signal of a terminal, and acquiring the power outage alarm signals of different terminals under the same line according to the power outage alarm signal to obtain multiple power outage alarm signals;

[0007] Eliminate the multiple power outage alarm signals according to a preset screening rule to obtain a power outage alarm event;

[0008] Acquire the topological relationship of the alarm terminal corresponding to the power outage alarm event, and acquire the number of upper branch switches, the number of terminals connected to the upper branch switches, and the number of alarm terminals according to the topological relationship;

[0009] Determine whether the corresponding upper branch switch is a suspected fault device according to the number of the upper branch switches, the number of the terminals, the number of the alarm terminals and a preset number threshold to generate a suspected fault power outage alarm event;

[0010] Obtain a power outage alarm event set, and if the suspected fault power outage alarm event does not exist in the power outage alarm event set, obtain a final power outage alarm event;

[0011] The communication information corresponding to the final power outage alarm event is determined according to the final power outage alarm event and a preset database, and the final power outage alarm event is sent to an address corresponding to the communication information. The preset database includes: matching information between the final power outage alarm event and the communication information.

[0012] The distribution network fault power outage perception and analysis method of the embodiment of the present invention has at least the following beneficial effects: by obtaining the power outage alarm signal of the system operation terminal, and then filtering multiple power outage alarm signals through preset screening rules to obtain a fault power outage alarm event, and then further judging the topological relationship of the fault power outage alarm event to locate the fault point, the judgment accuracy of the fault power outage alarm event can be improved, so as to provide convenient early warning reminders to the business department and effectively improve customer satisfaction.

[0013] According to some other embodiments of the present invention, the distribution network fault power outage perception analysis method, the preset screening rules include: preset error screening rules and preset interference screening rules; the multiple power outage alarm signals are eliminated according to the preset screening rules to obtain the power outage alarm event, including:

[0014] Determine, according to the preset error screening rule, that the power outage alarm signal among the multiple power outage alarm signals is an error signal, and remove the delayed error signal;

[0015] And / or, judging that the power outage alarm signal among the multiple power outage alarm signals is an interference signal according to the preset interference screening rule, and removing the delayed interference signal;

[0016] The error signal and / or the interference signal are eliminated from the multiple power outage alarm signals to obtain the power outage alarm event.

[0017] According to some other embodiments of the present invention, the distribution network fault power outage perception and analysis method, wherein the power outage alarm signal among the multiple power outage alarm signals is determined to be an error signal according to the preset error screening rule, and the delayed error signal is eliminated, including:

[0018] Determining the alarm terminals corresponding to the multiple power outage alarm signals;

[0019] If the alarm terminal sends more than a preset first number of power outage alarm signals within a preset first time range, the power outage alarm signal corresponding to the alarm terminal is regarded as the error signal;

[0020] If the alarm terminal has voltage data and current data within the preset second time range, the power outage alarm signal corresponding to the alarm terminal is the error signal;

[0021] If the error signal has a delay, the error signal is discarded.

[0022] According to some other embodiments of the present invention, the distribution network fault power outage perception and analysis method, judging whether the power outage alarm signal among the multiple power outage alarm signals is an interference signal according to the preset interference screening rule, and removing the delayed interference signal, includes:

[0023] Determining an alarm terminal corresponding to the multiple power outage alarm signals;

[0024] Obtaining the power outage time and the power restoration time of the alarm terminal, determining the power outage duration according to the power outage time and the power restoration time, and if the power outage duration is less than a preset duration threshold, the power outage alarm signal corresponding to the alarm terminal is the interference signal;

[0025] If the interference signal has a delay, the interference signal is removed.

[0026] According to some other embodiments of the present invention, the distribution network fault power outage perception analysis method, the determining whether the corresponding upper branch switch is a suspected fault device according to the number of the upper branch switches, the number of terminals, the number of alarm terminals and a preset number threshold to generate a suspected fault power outage alarm event, includes:

[0027] If the number of the upper branch switch is single, determine whether the upper branch switch is the suspected fault device according to the comparison between the number of terminals, the number of alarm terminals and the preset number threshold, and generate the suspected fault power outage alarm event;

[0028] If there are multiple upper branch switches, whether the upper branch switch is the suspected fault device is determined according to the terminal quantity, the alarm terminal quantity and the preset quantity threshold, so as to generate the suspected fault power outage alarm event.

[0029] According to some other embodiments of the distribution network fault power outage perception and analysis method of the present invention, if the number of the upper branch switch is single, determining whether the upper branch switch is the suspected fault device according to the number of terminals, the number of alarm terminals and the preset number threshold, and generating the suspected fault power outage alarm event, includes:

[0030] If the number of the upper branch switch is single, the number of terminals exceeds the preset number threshold, and the number of alarm terminals exceeds the preset number threshold, the upper branch switch is determined to be the suspected fault device, and the suspected fault power outage alarm event is generated;

[0031] If the number of the upper branch switch is single, the number of terminals exceeds the preset number threshold, and the number of alarm terminals does not exceed the preset number threshold, it is determined that the upper branch switch is not a suspected fault device, and the suspected fault power outage alarm event is generated;

[0032] If the number of the upper branch switches is single, the number of terminals is lower than the preset number threshold, and the number of alarm terminals is lower than the preset number threshold, the upper branch switch is determined to be the suspected faulty device, and the suspected fault power outage alarm event is generated.

[0033] According to some other embodiments of the distribution network fault power outage perception and analysis method of the present invention, if the number of the upper branch switches is multiple, determining whether the upper branch switch is the suspected fault device according to the number of terminals, the number of alarm terminals and the preset number threshold, so as to generate the suspected fault power outage alarm event, includes:

[0034] If the number of the upper branch switches is multiple, the number of terminals exceeds the preset number threshold, and the number of alarm terminals exceeds the preset number threshold, the upper branch switch is determined to be the suspected fault device, and a suspected fault power outage alarm event is generated;

[0035] If there are multiple upper branch switches, the number of terminals does not exceed the preset number threshold, and the number of alarm terminals exceeds the preset number threshold, the upper branch switch is not a suspected fault device, and the suspected fault power outage alarm event is generated;

[0036] If there are multiple upper branch switches, the number of terminals does not exceed the preset number threshold, and the number of alarm terminals does not exceed the preset number threshold, the upper branch switch is the suspected fault device, and the suspected fault power outage alarm event is generated.

[0037] According to some other embodiments of the present invention, the distribution network fault power outage perception and analysis method further includes:

[0038] Collect the power-on signal, three-phase power parameters, collection time range and power outage time of the alarm terminal;

[0039] The power-on time of the alarm terminal is set according to the collection time, the power-off time, the three-phase power parameters, the power-on signal and a preset time range.

[0040] According to some other embodiments of the distribution network fault power outage perception and analysis method of the present invention, the preset time range includes: a first preset time range and a second preset time range; the power restoration time of the alarm terminal is set according to the acquisition time, the power outage time, the three-phase power parameters, the power restoration signal and the preset time range, including:

[0041] If the power restoration signal and / or the three-phase power parameters are collected, setting the power restoration time of the alarm terminal to the current time;

[0042] and / or, if the collection time of the three-phase electrical parameters is within the first preset time range, setting the power-on time of the alarm terminal to the collection time minus a preset time threshold;

[0043] And / or, if the power restoration signal and the three-phase power parameters are not collected, and the power outage time exceeds the second preset time range, the power restoration time of the alarm terminal is set to the sum of the power outage time and the second preset time range.

[0044] In a second aspect, an embodiment of the present invention provides an electronic control device, comprising:

[0045] at least one processor, and

[0046] a memory communicatively connected to the at least one processor; wherein,

[0047] The memory stores instructions that can be executed by the at least one processor, and the instructions are executed by the at least one processor so that the at least one processor can execute the distribution network fault power outage perception and analysis method as described in the first aspect.

[0048] Other features and advantages of the present application will be described in the following description, and partly become apparent from the description, or understood by practicing the present application. The purpose and other advantages of the present application can be realized and obtained through the structures particularly pointed out in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] Figure 1 It is a schematic flow chart of a specific embodiment of a method for sensing and analyzing power outages caused by power distribution network faults in an embodiment of the present invention;

[0050] Figure 2 It is a flowchart of another specific embodiment of the method for sensing and analyzing power outages caused by power distribution network faults in an embodiment of the present invention;

[0051] Figure 3 It is a flowchart of another specific embodiment of the method for sensing and analyzing power outages caused by power distribution network faults in an embodiment of the present invention;

[0052] Figure 4It is a flowchart of another specific embodiment of the method for sensing and analyzing power outages caused by power distribution network faults in an embodiment of the present invention;

[0053] Figure 5 It is a flowchart of another specific embodiment of the method for sensing and analyzing power outages caused by power distribution network faults in an embodiment of the present invention;

[0054] Figure 6 It is a flowchart of another specific embodiment of the method for sensing and analyzing power outages caused by power distribution network faults in an embodiment of the present invention;

[0055] Figure 7 It is a flowchart of another specific embodiment of the method for sensing and analyzing power outages caused by power distribution network faults in an embodiment of the present invention;

[0056] Figure 8 It is a flowchart of another specific embodiment of the method for sensing and analyzing power outages caused by power distribution network faults in an embodiment of the present invention;

[0057] Fig. 9 It is a flowchart of another specific embodiment of the distribution network fault power outage perception and analysis method in an embodiment of the present invention. DETAILED DESCRIPTION

[0058] The following will be combined with the embodiments to clearly and completely describe the concept of the present invention and the technical effects produced, so as to fully understand the purpose, characteristics and effects of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, other embodiments obtained by those skilled in the art without creative work are all within the scope of protection of the present invention.

[0059] In the description of the present invention, if it involves orientation description, the orientation or position relationship indicated by "up", "down", "front", "back", "left", "right", etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0060] In the description of the embodiments of the present invention, if "several" is involved, it means more than one, if "multiple" is involved, it means more than two, if "greater than", "less than" or "exceed" is involved, it should be understood as not including the number itself, if "above", "below" or "within" is involved, it should be understood as including the number itself. If "first" or "second" is involved, it should be understood as being used to distinguish technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0061] There are many reasons for distribution network failures, including both subjective factors and objective factors. Therefore, the specific reasons still need to be analyzed in detail. Most of the power outage perception and analysis methods in related technologies use data synchronization tools to synchronize the power outage alarm signals of the metering automation system at regular intervals, which are directly used after simple filtering. In addition, the processing methods for some error signals and interference signals are too simple, resulting in low accuracy in power outage fault perception and real-time troubleshooting, and cannot effectively support the development of fault analysis services based on power outage fault information.

[0062] In the related art, the power outage signal of a single automation system is used for judgment and processing, and voltage data, current data and alarm signals of other automation systems are not considered for auxiliary judgment. In addition, most of the related alarm signals are identified and analyzed after power is restored. Therefore, the accuracy of power outage signal perception in the related art is not high.

[0063] Based on this, the present application discloses a distribution network fault power outage perception and analysis method, which can improve the accuracy of power outage perception and effectively support service dispatching to carry out active early warning services for fault power outages.

[0064] Reference Figure 1 In a first aspect, an embodiment of the present invention discloses a method for analyzing power outages caused by power distribution network faults, including:

[0065] S100, collecting terminal power outage alarm signals, and obtaining power outage alarm signals of different terminals under the same line according to the power outage alarm signals to obtain multiple power outage alarm signals;

[0066] S200, eliminating multiple power outage alarm signals according to a preset screening rule to obtain a power outage alarm event;

[0067] S300, obtaining the topological relationship of the alarm terminal corresponding to the power outage alarm event, and obtaining the number of upper branch switches, the number of terminals connected to the upper branch switches, and the number of alarm terminals according to the topological relationship;

[0068] S400, determining whether the corresponding upper branch switch is a suspected fault device according to the number of upper branch switches, the number of terminals, the number of alarm terminals and a preset number threshold to generate a suspected fault power outage alarm event;

[0069] S500, obtaining a power outage alarm event set, and if the suspected fault power outage alarm event does not exist in the power outage alarm event set, obtaining a final power outage alarm event;

[0070] S600, determining communication information corresponding to the final power outage alarm event according to the final power outage alarm event and a preset database, and sending the final power outage alarm event to an address corresponding to the communication information, wherein the preset database includes: matching information of the final power outage alarm event and the communication information.

[0071] After the power outage alarm signal of the terminal is collected, the power outage alarm signals of different terminals under the same line are obtained according to the power outage alarm signal to obtain multiple power outage alarm signals, wherein there are error signals and / or interference signals in the power outage alarm signals of different terminals under the same line, then it is necessary to eliminate the multiple power outage alarm signals according to the preset screening rules to eliminate the power outage alarm signals that are error signals and / or interference signals in the multiple power outage alarm signals, and then obtain the power outage alarm event according to the eliminated multiple power outage alarm signals. After the power outage alarm event is automatically collected, the alarm terminal corresponding to the power outage alarm event is obtained, and the topological relationship of the alarm terminal is obtained. According to the topological relationship, the number of upper branch switches of the alarm terminal, the number of terminals connected to the upper branch switch, and the number of alarm terminals are obtained, and then the number of upper branch switches, the number of terminals connected to the upper branch switch, and the number of alarm terminals are compared with the preset number threshold to determine whether the upper branch switch is a suspected fault device to generate a suspected fault power outage alarm event. If the upper branch switch is determined to be a suspected faulty device and a suspected fault power outage alarm event is generated, then determine whether there is a power outage alarm event in the power outage alarm event set that is similar to the suspected fault power outage alarm event. If not, obtain the final power outage alarm event based on the suspected fault power outage alarm event. Then determine the corresponding communication information based on the final power outage alarm event and the preset database, and then send the final power outage alarm event to the address corresponding to the communication information to automatically analyze the fault point location based on the topological relationship, and then obtain a more accurate final power outage alarm event, and automatically send it to the user, so that the user can view the final power outage alarm event to further carry out related services such as active early warning.

[0072] Among them, the power outage alarm signal of the collection terminal is collected, and the terminal is a terminal of any system in the operation and collection metering automation system, distribution network automation system, dispatching automation system, distribution network OMS system, and main network OMS system. Therefore, by obtaining the power outage alarm signal of the system operation terminal, and then filtering multiple power outage alarm signals through preset screening rules to obtain fault power outage alarm events, and then further judging the topological relationship of the fault power outage alarm event to locate the fault point, the judgment accuracy of the fault power outage alarm event can be improved, so as to provide convenient early warning reminders to the business department and effectively improve customer satisfaction.

[0073] Reference Figure 2 In some embodiments, the preset screening rules include: preset error screening rules and preset interference screening rules, and step S200 includes:

[0074] S210, determining that a power outage alarm signal among multiple power outage alarm signals is an error signal according to a preset error screening rule, and removing delayed error signals;

[0075] S220, and / or, determining that a power outage alarm signal among multiple power outage alarm signals is an interference signal according to a preset interference screening rule, and removing the delayed interference signal;

[0076] S230: Eliminate error signals and / or interference signals from a plurality of power outage alarm signals to obtain a power outage alarm event.

[0077] Since there are power outage alarm signals that are error signals or interference signals among multiple power outage alarm signals, it is necessary to judge the multiple power outage alarm signals according to the preset error screening rules to find out the power outage alarm signals that are error signals, and then judge the multiple power outage alarm signals according to the preset interference screening rules to find out the power outage alarm signals that are interference signals, and then remove the delayed error signals and / or interference signals from the multiple power outage alarm signals, and then collect the multiple power outage alarm signals to obtain power outage alarm events. Therefore, according to the preset error screening rules and / or preset interference screening rules, the error signals and interference signals of multiple power outage alarm signals are removed to obtain more accurate power outage alarm signals, and then the final power outage alarm event obtained by subsequent analysis based on the power outage alarm event is more accurate.

[0078] Reference Figure 3 In some embodiments, step S210 includes:

[0079] S211, determining alarm terminals corresponding to multiple power outage alarm signals;

[0080] S212: if the alarm terminal sends more than a preset first number of alarm signals within a preset first time range, the power outage alarm signal corresponding to the alarm terminal is regarded as an error signal;

[0081] S213: If the alarm terminal has voltage data and current data within the preset second time range, the power outage alarm signal corresponding to the alarm terminal is an error signal;

[0082] S214: If there is a delay in the error signal, the error signal is discarded.

[0083] Among them, multiple power outage alarm signals are judged according to preset error screening rules to determine the error signal, mainly judging that the alarm terminal corresponding to the power outage alarm signal sends more than a preset first number of power outage alarm signals within a preset first time range, and / or there is voltage data and current data within a preset second time range; then the power outage alarm signal output by the alarm terminal is an error signal, and then it is judged whether there is a delay in the error signal. If there is a delay in the error signal, the power outage alarm signal that is an error signal will be eliminated from the multiple power outage alarm signals, and then the multiple power outage alarm signals from which the error signals have been eliminated will be aggregated to obtain a power outage alarm event, so that the obtained power outage alarm event is more accurate.

[0084] Specifically, in this embodiment, the first time range is 1 hour, and if the number of power outage alarm signals collected by the alarm terminal corresponding to the power outage alarm signal exceeds the preset first number in 1 hour, the power outage alarm signal of the alarm terminal is judged to be an error signal. If the alarm terminal has voltage data and current data in the preset second time range, mainly collects "A phase current", "B phase current", "C phase current", "A phase voltage", "B phase voltage", "C phase voltage" data for one-by-one judgment, in this embodiment, the preset second time range is 0 to 15 minutes, if there is any one of "A phase current", "B phase current", "C phase current", "A phase voltage", "B phase voltage", "C phase voltage" within 15 minutes, then the power outage alarm signal of the alarm terminal is judged to be an error signal, and then it is judged whether the power outage alarm signal of the error signal is delayed. If the error signal is delayed, the power outage alarm signal of the error signal will be eliminated from the original multiple power outage alarm signals to re-collect multiple power outage alarm signals to obtain a power outage alarm event.

[0085] Reference Figure 4 , wherein step S220 includes:

[0086] S221, determining the corresponding alarm terminal among multiple power outage alarm signals;

[0087] S222, obtaining the power outage time and the power restoration time of the alarm terminal, and determining the power outage duration according to the power outage time and the power restoration time. If the power outage duration is less than a preset duration threshold, the power outage alarm signal corresponding to the alarm terminal is an interference signal;

[0088] S223: If the interference signal has a delay, remove the interference signal.

[0089] According to the preset interference screening rules, determine whether there is a power outage alarm signal that is an interference signal among multiple power outage alarm signals. The preset interference screening rules are mainly: obtain the power outage duration and power restoration time of the alarm terminal corresponding to the power outage alarm signal, and then determine the power outage duration based on the power outage time and power restoration time. If the power outage duration is less than the preset duration threshold, the power outage alarm signal output by the alarm terminal is an interference signal, and then determine whether the interference signal has a delay. If the interference signal has a delay, the power outage alarm signal that is an interference signal will be eliminated, and then multiple power outage alarm signals that have been eliminated from the interference signal will be aggregated to obtain a power outage alarm event. Therefore, the power outage alarm event obtained is accurate.

[0090] Specifically, the preset duration threshold is 10 minutes. If the power outage duration obtained by the power outage time and the power restoration time of the alarm terminal is less than 10 minutes, the power outage alarm signal corresponding to the alarm terminal is considered to be an interference signal. Then, when aggregating multiple power outage alarm signals, it is necessary to determine whether the power outage alarm signal that is an interference signal has a delay. If the interference signal is delayed, the power outage alarm signal that is an interference signal will be removed from the multiple power outage alarm signals, and the power outage alarm event will be obtained by aggregating the multiple power outage alarm signals after elimination. Therefore, the power outage alarm signal that is an error signal and / or an interference signal is eliminated from multiple power outage alarm signals and then aggregated to obtain a power outage alarm event, so that the aggregation of power outage alarm events is more accurate.

[0091] Reference Figure 5 In some embodiments, step S400 includes:

[0092] S410, if the number of upper branch switches is single, determine whether the upper branch switch is a suspected fault device based on the number of terminals, the number of alarm terminals and a preset number threshold, and generate a suspected fault power outage alarm event;

[0093] S420: If there are multiple upper branch switches, determine whether the upper branch switch is a suspected fault device according to the number of terminals, the number of alarm terminals and a preset number threshold, so as to generate a suspected fault power outage alarm event.

[0094] After automatically collecting power outage alarm events, according to the topological relationship of the alarm terminal corresponding to the power outage alarm event, since the power outage alarm event includes multiple power outage alarm signals, and multiple power outage alarm signals correspond to multiple alarm terminals, there are also multiple topological relationships corresponding to multiple alarm terminals. According to the topological relationship of each alarm terminal, the number of upper branch switches of the alarm terminal, the number of terminals connected to the upper branch switch, and the number of alarm terminals with alarms are obtained. Then, the number of upper branch switches, the number of terminals, and the number of alarm terminals can be compared with the preset number threshold to further determine whether the upper branch switch is a suspected faulty device, and then generate a suspected fault power outage alarm event or a fault power outage alarm event. Therefore, the power outage alarm signal output by the alarm terminal is used to further determine whether the upper branch switch connected to the alarm terminal is a suspected faulty device, so as to further determine the situation of the power outage fault, so that the power outage fault perception is more accurate, rather than just analyzing the existence of a power outage fault in the alarm terminal. Since the number of upper branch switches is determined to be single or multiple according to the topological relationship of the alarm terminal, Therefore, it is necessary to first analyze the number of upper-level branch switches and then compare the number of terminals, the number of alarm terminals and the preset number threshold to determine whether the upper-level branch switch is a suspected faulty device, so as to generate a suspected fault power outage alarm event or a non-suspected fault power outage alarm event. In this way, it is possible to more accurately determine whether the upper-level branch switch is a suspected faulty device, and further determine whether the alarm terminal outputs a power outage alarm signal due to a real fault power outage at the alarm terminal or whether the upper-level branch switch is a suspected faulty device. In this way, the final power outage alarm event output is more accurate, and the fault can be accurately located, so as to effectively improve the accuracy of subsequent business analysis based on the final power outage alarm event.

[0095] Reference Figure 6 In some embodiments, step S410 includes:

[0096] S411, if the number of upper branch switches is single, the number of terminals exceeds the preset number threshold, and the number of alarm terminals exceeds the preset number threshold, the upper branch switch is determined to be a suspected fault device, and a suspected fault power outage alarm event is generated;

[0097] S412: If the number of upper branch switches is single, the number of terminals exceeds the preset number threshold, and the number of alarm terminals does not exceed the preset number threshold, the upper branch switch is determined to be a non-suspected fault device, and a suspected fault power outage alarm event is generated;

[0098] S413: If the number of upper branch switches is single, the number of terminals is lower than the preset number threshold, and the number of alarm terminals is lower than the preset number threshold, the upper branch switch is determined to be a suspected faulty device, and a suspected fault power outage alarm event is generated.

[0099] After the upper branch switch is determined according to the topological relationship of the alarm terminal, if the upper branch switch of the alarm terminal is single, the number of terminals running downstream of the upper branch switch and the number of alarm terminals on the branch line at the same time are determined, and then the number of terminals, the number of alarm terminals and the preset number threshold are compared to determine whether the upper branch switch is a suspected faulty device; if the upper branch switch is a suspected faulty device, a suspected fault power outage alarm event is generated, and if the upper branch switch is not a suspected faulty device but a non-suspected faulty device, a non-suspected fault power outage alarm event is generated. Therefore, it is determined that the upper branch switch is single, and the number of terminals on the upper branch switch, the number of alarm terminals and the preset number threshold are compared to determine whether the upper branch switch is a suspected faulty device, so as to further analyze and obtain a more accurate suspected fault power outage alarm event.

[0100] Specifically, in this embodiment, the preset number threshold is 5, and in other embodiments, the preset number threshold can be set to other values. For a single upper branch switch, when the number of terminals running downstream of the upper branch switch is greater than or equal to 5, and the number of alarm terminals on the branch line in the same time period is greater than or equal to 5, a suspected fault power outage alarm event is generated, and the upper branch switch is judged as a suspected fault device. That is, if the number of alarm terminals exceeds the preset number threshold according to the power outage alarm signal, it is considered that the upper branch switch corresponding to the alarm terminal is faulty. For a single upper branch switch, when the number of terminals running downstream of the upper branch switch is greater than or equal to 5, and the number of alarm terminals on the branch line in the same time period is less than 5, a suspected fault power outage alarm event is generated, and the upper branch switch is judged as a non-suspected fault device. For a single upper branch switch, when the number of terminals running downstream is less than 5, and the number of alarm terminals on the branch line in the same time period is also less than 5, a suspected fault power outage alarm event is generated, and the branch switch is judged as a suspected fault device.

[0101] Reference Figure 7 In some embodiments, step S420 includes:

[0102] S421. If there are multiple upper branch switches, the number of terminals exceeds the preset number threshold, and the number of alarm terminals exceeds the preset number threshold, the upper branch switch is determined to be a suspected fault device, and a suspected fault power outage alarm event is generated;

[0103] S422: If there are multiple upper branch switches, the number of terminals does not exceed the preset number threshold, and the number of alarm terminals exceeds the preset number threshold, the upper branch switch is not a suspected fault device, and a suspected fault power outage alarm event is generated;

[0104] S423. If there are multiple upper branch switches, the number of terminals does not exceed the preset number threshold, and the number of alarm terminals does not exceed the preset number threshold, the upper branch switch is not suspected to be a faulty device, and a suspected fault power outage alarm event is generated.

[0105] When there are multiple upper-level branch switches of the alarm terminal, the number of terminals, the number of alarm terminals and the preset number threshold are compared to analyze whether the upper-level branch switch is a suspected faulty device, and a suspected fault power outage alarm event is generated to further determine whether the output of the power outage alarm signal is caused by the upper-level branch switch being a suspected faulty device. In this way, business analysis based on the final power outage alarm event is more accurate.

[0106] Specifically, for multiple upper branch switches under the same line, if the number of terminals running under any upper branch switch is greater than or equal to 5, and the number of alarm terminals on the branch line is also greater than or equal to 5 in the same period, a suspected fault power outage alarm event is generated, and the upper branch switch is judged as a suspected fault device. For multiple upper branch switches under the same line, if the number of terminals running under any upper branch switch is less than 5, and the number of alarm terminals on the branch line is greater than or equal to 5 in the same period, a suspected fault power outage alarm event is generated, and the upper branch switch is judged as a non-suspected fault device. For multiple upper branch switches under the same line, if the number of terminals running under any upper branch switch is less than 5, and the number of alarm terminals on the branch line is less than 5 in the same period, a suspected fault power outage alarm event is generated, and the branch switch is judged as a suspected fault device. For multiple branch switches under the same line, if the number of terminals running under multiple branch switches is greater than or equal to 5, and the number of alarm terminals on multiple branch lines within the same period is greater than or equal to 5, a suspected fault power outage alarm event is generated, and these upper-level branch switches are judged as suspected faulty devices.

[0107] After determining the suspected fault power outage alarm event, it is necessary to compare the suspected fault power outage alarm event with the power outage alarm events in the known power outage alarm event set. If there is a power outage alarm event in the known power outage alarm event set that is consistent with the suspected fault power outage alarm event, the suspected fault power outage alarm event is judged as an existing event. If there is no suspected fault power outage alarm event in the known power outage alarm event set, the suspected fault power outage alarm event is classified as the final power outage alarm event, and the final power outage alarm event can be sent to the corresponding address of the communication information so that the user can obtain the accurate final power outage alarm event.

[0108] Reference Figure 8 In some embodiments, the distribution network fault power outage perception analysis method further includes:

[0109] S700, collecting the power restoration signal, three-phase power parameters, collection time range and power outage time of the alarm terminal;

[0110] S800. Set the power-on time of the alarm terminal according to the collection time, the power-off time, the three-phase power parameters, the power-on signal and the preset time range.

[0111] After the final power outage alarm event is sent to the user, the power-on signal, three-phase power parameters, collection time and power outage time of the alarm terminal are collected, and the power-on time of the alarm terminal is determined based on the collection time, power outage time, three-phase power parameters, power-on signal and preset time range to clearly know the power-on time. The final power outage alarm event is determined based on the power-on time to feed back the latest final power outage alarm event to the user. The user can then know which terminal has a fault power outage and the specific cause of the fault power outage based on the final power outage alarm event.

[0112] In some embodiments, the preset time range includes: a first preset time range and a second preset time range;

[0113] Reference Fig. 9 , step S800 includes:

[0114] S810: If a power-on signal and / or three-phase power parameters are collected, the power-on time of the alarm terminal is set to the current time;

[0115] S820, and / or, if the collection time of the three-phase power parameters is within the first preset time range, setting the power-on time of the alarm terminal to be the collection time minus the preset time threshold;

[0116] S830, and / or, if the power restoration signal and three-phase power parameters are not collected, and the power outage time exceeds the second preset time range, the power restoration time of the alarm terminal is set to the sum of the power outage time and the second preset time range.

[0117] Through the collected power-on signal and three-phase power parameters, it is considered that the alarm terminal has been powered on, and the power-on time is set to the current time. If the collection time of the three-phase power parameters is within the first preset time range, the alarm terminal is also judged to have been powered on, and the power-on time of the alarm terminal is set to the collection time minus the preset time threshold. If the power-on signal and three-phase power parameters are collected, and the power-off time exceeds the second preset time range, it is assumed that the alarm terminal has been powered on, and the power-on time of the alarm terminal is set to the sum of the power-off time and the second preset time range, that is, the power-on time is set to be delayed by the second preset time range after the power outage. Therefore, the final power outage alarm event is determined according to the power-on time to remind the latest final power outage alarm event, so that the user can receive the collection of the final power outage alarm event to analyze the fault power outage of the alarm terminal.

[0118] Specifically, the three-phase electrical parameters include: A-phase current, B-phase current, C-phase current, A-phase voltage, B-phase voltage, and C-phase voltage. In this embodiment, the first preset time range is 15 minutes, the preset time threshold is 8 minutes, and the second preset time range is 72 hours. If the collected alarm terminal is single, the collected power outage alarm event is automatically matched according to the collected power-on signal, and the corresponding alarm terminal is set to have power restored. If there are multiple alarm terminals, the collected power outage alarm event is automatically matched according to the collected power-on signal, and the alarm terminals are set to have power restored in batches. If the collected alarm terminal is single, but the power-on signal cannot be collected, the collected power outage alarm event is automatically matched according to the collected latest voltage data, and the corresponding alarm terminal is set to have power restored. (The earliest time to collect voltage data after the power outage alarm minus 8 minutes is used as the power-on time of the alarm terminal). If there are multiple alarm terminals that are collected, but the power-on signal cannot be collected, the system will automatically match the collected power outage alarm events based on the earliest voltage data collected, and set the corresponding alarm terminals in batches to have power restored. (The earliest time to collect voltage data after the power outage alarm minus 8 minutes is used as the power-on time of the corresponding alarm terminal). If there is only one alarm terminal that is collected, and the power outage alarm time and the time the terminal collects voltage and current are within a certain threshold (threshold setting: the alarm terminal is online or collects current and voltage data 15 minutes after the power outage alarm), it is determined to have power restored, and the collected power outage alarm events are automatically matched to restore power to the alarm terminal. (The earliest time to collect voltage data after the power outage alarm minus 8 minutes is used as the power-on time of the alarm terminal). If there are multiple alarm terminals that are aggregated, and the power outage alarm time and the time when the terminal collects voltage and current are within a certain threshold (threshold setting: the alarm terminal is online or collects current and voltage data 15 minutes after the power outage alarm), it is judged that power has been restored, and the aggregated power outage alarm events are automatically matched to restore power to the corresponding alarm terminals in batches. (The earliest time to collect voltage data after the power outage alarm minus 8 minutes is used as the power restoration time of the alarm terminal). If there is only one alarm terminal that is aggregated, when the voltage and current signals cannot be collected, and the power restoration signal is not collected within 72 hours, the alarm terminal is judged to have been restored, and the system automatically matches the aggregated power outage alarm events and sets the power restoration time of the alarm terminal to the power outage alarm time + 72 hours. If there are multiple alarm terminals that are aggregated, when the voltage and current signals cannot be collected, and the power restoration signal is not collected within 72 hours, these alarm terminals are judged to have been restored. The system automatically matches the collected power outage alarm events and sets the power-on time of these alarm terminals to the power outage alarm time + 72 hours. If the collected alarm terminal is single, the system collects the power-on signal, and there is a power outage alarm signal before the power-on signal, then the terminal device is judged to have been powered on. The system automatically matches the collected power outage alarm events and sets the power-on time of the alarm terminal to the power-on alarm time.If there are multiple alarm terminals in the collection, and the system collects the power-on signal, and there is a power-off alarm signal before the power-on alarm, the terminal device with the power-on signal will be judged as having been powered on. The system automatically matches the collected power-off alarm events and sets the power-on time of these alarm terminals in batches to the corresponding power-on alarm time.

[0119] In a second aspect, an embodiment of the present invention further discloses an electronic control device, comprising: at least one processor, and a memory communicatively connected to the at least one processor; wherein the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor so that the at least one processor can execute the distribution network fault power outage perception and analysis method as described in the first aspect.

[0120] The device embodiments described above are merely illustrative, and the units described as separate components may or may not be physically separated, that is, they may be located in one place or distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0121] It will be appreciated by those skilled in the art that all or some of the steps and systems in the disclosed method above may be implemented as software, firmware, hardware and appropriate combinations thereof. Some physical components or all physical components may be implemented as software executed by a processor, such as a central processing unit, a digital signal processor or a microprocessor, or may be implemented as hardware, or may be implemented as an integrated circuit, such as an application specific integrated circuit. Such software may be distributed on a computer-readable medium, which may include a computer storage medium (or a non-transitory medium) and a communication medium (or a temporary medium). As known to those skilled in the art, the term computer storage medium includes volatile and non-volatile, removable and non-removable media implemented in any method or technology for storing information (such as computer-readable instructions, data structures, program modules or other data). Computer storage media include, but are not limited to, RAM, ROM, EEPROM, flash memory or other memory technologies, CD-ROM, digital versatile disks (DVD) or other optical disk storage, magnetic cassettes, magnetic tapes, disk storage or other magnetic storage devices, or any other medium that may be used to store desired information and may be accessed by a computer. Furthermore, it is well known to those skilled in the art that communication media typically embodies computer readable instructions, data structures, program modules, or other data in a modulated data signal such as a carrier wave or other transport mechanism, and may include any information delivery media.

[0122] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge of ordinary technicians in the relevant technical field without departing from the purpose of the present invention. In addition, the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict.

Claims

1. A distribution network fault outage perception and analysis method, characterized in that: include: Collecting a power outage alarm signal of a terminal, and acquiring the power outage alarm signals of different terminals under the same line according to the power outage alarm signal to obtain multiple power outage alarm signals; If the alarm terminal sends more than the preset first number of power outage alarm signals within the preset first time range, the power outage alarm signal corresponding to the alarm terminal is regarded as an error signal; wherein the preset first time range is 1 hour; if the alarm terminal has voltage data and current data within the preset second time range, the power outage alarm signal corresponding to the alarm terminal is the error signal; wherein the preset second time range is 15 minutes, the voltage data are A phase voltage, B phase voltage and C phase voltage, and the current data are A phase current, B phase current and C phase current; if the error signal has a delay, the error signal is discarded; And / or, determine the alarm terminal corresponding to the multiple power outage alarm signals; obtain the power outage time and power restoration time of the alarm terminal, determine the power outage duration according to the power outage time and the power restoration time, if the power outage duration is less than a preset duration threshold, the power outage alarm signal corresponding to the alarm terminal is an interference signal; wherein the preset duration threshold is 10 minutes; if the interference signal has a delay, the interference signal is eliminated; Eliminate the error signal and / or the interference signal from the multiple power outage alarm signals to obtain a power outage alarm event; Acquire the topological relationship of the alarm terminal corresponding to the power outage alarm event, and acquire the number of upper branch switches, the number of terminals connected to the upper branch switches, and the number of alarm terminals according to the topological relationship; Determine whether the corresponding upper branch switch is a suspected fault device according to the number of the upper branch switches, the number of the terminals, the number of the alarm terminals and a preset number threshold to generate a suspected fault power outage alarm event; Obtain a power outage alarm event set, and if the suspected fault power outage alarm event does not exist in the power outage alarm event set, determine the suspected fault power outage alarm event as the final power outage alarm event; Determine the communication information corresponding to the final power outage alarm event according to the final power outage alarm event and a preset database, and send the final power outage alarm event to the address corresponding to the communication information, wherein the preset database includes: matching information between the final power outage alarm event and the communication information; Wherein, determining whether the corresponding upper branch switch is a suspected fault device according to the number of the upper branch switches, the number of the terminals, the number of the alarm terminals and a preset number threshold to generate a suspected fault power outage alarm event specifically includes: If the number of the upper branch switch is single, determine whether the upper branch switch is the suspected fault device according to the comparison between the number of terminals, the number of alarm terminals and the preset number threshold, and generate the suspected fault power outage alarm event; If there are multiple upper branch switches, determine whether the upper branch switch is the suspected fault device according to the number of terminals, the number of alarm terminals and the preset number threshold, so as to generate the suspected fault power outage alarm event; Wherein, if the number of the upper branch switch is single, determining whether the upper branch switch is the suspected fault device according to the number of terminals, the number of alarm terminals and the preset number threshold, and generating the suspected fault power outage alarm event, specifically includes: If the number of the upper branch switch is single, the number of terminals exceeds the preset number threshold, and the number of alarm terminals exceeds the preset number threshold, the upper branch switch is determined to be the suspected fault device, and the suspected fault power outage alarm event is generated; If the number of the upper branch switch is single, the number of terminals exceeds the preset number threshold, and the number of alarm terminals does not exceed the preset number threshold, it is determined that the upper branch switch is not a suspected fault device, and the suspected fault power outage alarm event is generated; If the number of the upper branch switch is single, the number of terminals is lower than the preset number threshold, and the number of alarm terminals is lower than the preset number threshold, the upper branch switch is determined to be the suspected fault device, and the suspected fault power outage alarm event is generated; Wherein, if the number of the upper branch switches is multiple, determining whether the upper branch switch is the suspected fault device according to the number of terminals, the number of alarm terminals and the preset number threshold, so as to generate the suspected fault power outage alarm event, specifically includes: If the number of the upper branch switches is multiple, the number of terminals exceeds the preset number threshold, and the number of alarm terminals exceeds the preset number threshold, the upper branch switch is determined to be the suspected fault device, and a suspected fault power outage alarm event is generated; If there are multiple upper branch switches, the number of terminals does not exceed the preset number threshold, and the number of alarm terminals exceeds the preset number threshold, the upper branch switch is not a suspected fault device, and the suspected fault power outage alarm event is generated; If there are multiple upper branch switches, the number of terminals does not exceed the preset number threshold, and the number of alarm terminals does not exceed the preset number threshold, the upper branch switch is the suspected fault device, and the suspected fault power outage alarm event is generated.

2. The method for analyzing power outage caused by power distribution network fault according to claim 1, characterized in that: Also includes: Collect the power-on signal, three-phase power parameters, collection time range and power outage time of the alarm terminal; The power restoration time of the alarm terminal is set according to the collection time, the power outage time, the three-phase power parameters, the power restoration signal and a preset time range.

3. The method for analyzing power outage caused by power distribution network fault according to claim 2, characterized in that: The preset time range includes: a first preset time range and a second preset time range; the setting of the power restoration time of the alarm terminal according to the acquisition time, the power outage time, the three-phase power parameters, the power restoration signal and the preset time range includes: If the power restoration signal and / or the three-phase power parameters are collected, setting the power restoration time of the alarm terminal to the current time; and / or, if the collection time of the three-phase electrical parameters is within the first preset time range, setting the power-on time of the alarm terminal to the collection time minus a preset time threshold; And / or, if the power restoration signal and the three-phase power parameters are not collected, and the power outage time exceeds the second preset time range, the power restoration time of the alarm terminal is set to the sum of the power outage time and the second preset time range.

4. An electronic control device, characterized in that: include: at least one processor, and a memory communicatively connected to the at least one processor; wherein, The memory stores instructions that can be executed by the at least one processor, and the instructions are executed by the at least one processor so that the at least one processor can execute the distribution network fault power outage perception and analysis method as described in any one of claims 1 to 3.

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