Intelligent analysis and positioning system and method for lightning protection accidents in distribution networks

Abstract

The embodiment of the present application provides a distribution network lightning protection accident intelligent analysis and positioning system and method, which relates to the field of distribution network lightning protection analysis. The system includes a data acquisition subsystem, a network service subsystem, an accident positioning subsystem, a lightning accident analysis subsystem, and an emergency response subsystem. Improve the current level of automation in the management of lightning strike accidents in distribution networks, integrate a comprehensive system with functions such as real-time monitoring, lightning strike accident positioning, and emergency response, and quickly and accurately locate the lightning strike accident area and evaluate the impact of the accident by real-time monitoring of the distribution network operation status. When an accident occurs, the main station computer immediately analyzes and processes the accident data and automatically alarms, and provides corresponding processing measures and suggestions, thereby improving the safety and reliability of the distribution network, further promoting the intelligence and energy saving and consumption reduction of the power system, and better meeting the needs of urban modernization construction.

Description

Technical Field

[0001] The present invention relates to the technical field of lightning protection for distribution networks, and in particular to an intelligent analysis and positioning system and method for lightning protection accidents in distribution networks. Background Art

[0002] The distribution network is the last level of transmission and distribution system for urban electric energy, which directly affects the city’s power supply and safety. The power system requires high reliability and stability, and the stable operation of various power equipment also needs to be guaranteed.

[0003] The current construction of smart distribution networks is relatively weak in the control and analysis of power grid accidents. In outdoor thunderstorm weather, lightning strikes can easily cause electrical accidents to the distribution network. The analysis and operation of the accidents is not systematic enough, and the lightning strike accident problems cannot be promptly investigated, resulting in the inability to carry out repair operations on the lightning strike accident points in a timely manner, reducing the efficiency of the distribution network recovery and seriously affecting the normal operation of life and production in the region. Therefore, there is an urgent need for a system and method that can quickly and accurately locate and handle lightning strike accidents when lightning strikes occur in power equipment. Summary of the invention

[0004] In view of this, the purpose of the present invention is to overcome the deficiencies in the prior art and to provide a distribution network lightning protection accident intelligent analysis and positioning system and method.

[0005] The present invention provides the following technical solutions:

[0006] In a first aspect, an embodiment of the present disclosure provides a distribution network lightning protection accident intelligent analysis and positioning system, the system comprising a data acquisition subsystem, a network service subsystem, an accident positioning subsystem, a lightning accident analysis subsystem and an emergency response subsystem;

[0007] The data acquisition subsystem includes a real-time monitoring unit and a data acquisition unit. The data acquisition subsystem is used to collect distribution network accident data and collect and analyze real-time operation data of the power grid;

[0008] The network service subsystem is used to manage the distribution network accident data and send the accident data to the accident location subsystem according to the data channel;

[0009] The accident location subsystem is used to locate and analyze lightning accidents based on the distribution network accident data;

[0010] The lightning accident analysis subsystem is used to monitor and analyze lightning accident data in real time, and obtain the type of lightning accident, the degree of lightning accident and the impact range of lightning according to the lightning location model;

[0011] The emergency response subsystem is used to trigger a corresponding emergency plan according to the type of lightning accident, the degree of the lightning accident and the impact range of the lightning accident, and generate lightning accident handling suggestions.

[0012] According to a specific embodiment disclosed in the present application, the real-time monitoring unit includes a surge protector remote signal monitoring subunit, a surge protector action times monitoring subunit, a three-phase voltage monitoring subunit and a lightning current online monitoring subunit;

[0013] The surge protector remote signal monitoring subunit is used to alarm and prompt SPD failure when a remote signal alarm switch state change is detected;

[0014] The surge protector action times monitoring subunit is used for when the SPD is actuated, the single chip microcomputer in the analyzer detects the current value sensed by the lightning strike times sensor, and determines whether to count once after judgment;

[0015] The three-phase voltage monitoring subunit is used to detect the three-phase voltage;

[0016] The lightning current online monitoring subunit is used for online monitoring of the peak value, polarity, energy, lightning strike time and number of lightning currents, and timely data transmission after a lightning strike occurs.

[0017] According to a specific implementation manner disclosed in the present application, the data acquisition unit is used to collect grid voltage, grid current, grid power and grid frequency, wherein the grid power is divided into peak power and valley power.

[0018] According to a specific implementation method disclosed in the present application, the network service subsystem includes a wireless remote submodule, a host working submodule and an accident data storage submodule, the wireless remote submodule is connected to the host working submodule via a data connection line, and the accident data storage submodule is electrically connected to the host working submodule;

[0019] The wireless remote submodule is used to complete the on-site information collection and classification and statistical processing of the distribution network, and transmit the classified accident information and pictures taken on-site to the host working submodule;

[0020] The host working submodule is used to classify the accidents of the distribution network according to the accident information, and track and manage the accidents of the distribution network equipment, lines and the whole network;

[0021] The accident data storage submodule is used to store the accident information and accident classification.

[0022] According to a specific implementation method disclosed in the present application, the accident location subsystem includes an accident location unit and an accident distance calculation unit;

[0023] The accident location unit is used to establish a corresponding matrix model according to the specific construction of the distribution network, establish an accident data matrix according to the lightning accident data, and calculate the accident data matrix to obtain the lightning accident point;

[0024] The accident distance calculation unit is used to perform off-line short-circuit calculation on the lightning accident feedback line based on the medium voltage network analysis model.

[0025] According to a specific implementation method disclosed in the present application, the lightning accident analysis subsystem includes an accident information collection unit, an accident site investigation unit, a data analysis unit, and a protective measures evaluation unit;

[0026] The accident information collection unit is used to record the time of the accident, weather conditions at the accident location, and the type and location of the damaged equipment;

[0027] The accident site investigation unit is used to conduct an on-site investigation of the accident site, wherein the on-site investigation includes checking lightning strike traces, checking the status of damaged equipment, and checking the surrounding environment;

[0028] The data analysis unit is used to analyze the intensity and type of lightning strikes and the probability of lightning strikes according to lightning monitoring data;

[0029] The protection measure evaluation unit is used to evaluate the working status and configuration rationality of existing lightning protection equipment and put forward optimization suggestions.

[0030] According to a specific implementation method disclosed in the present application, the emergency response subsystem includes an accident alarm module, a plan activation module and an emergency repair scheduling module;

[0031] The accident alarm module is used to issue alarm information according to the lightning accident information of the power distribution station;

[0032] The plan start module is used to isolate the distribution station line according to the distribution station lightning accident information, determine the switch position, and separate the accident line from the non-accident line;

[0033] The emergency repair scheduling module is used to construct the shortest power supply path in the power supply area to be restored according to the accident isolation analysis data.

[0034] In a second aspect, an embodiment of the present disclosure provides a method for intelligent analysis and positioning of lightning protection accidents in a distribution network, the method comprising:

[0035] Collect distribution network accident data, and collect and analyze real-time operation data of the power grid;

[0036] Managing distribution network accident data, and sending the distribution network accident data to the accident location subsystem according to the data channel;

[0037] Positioning and analyzing the lightning accident according to the distribution network accident data;

[0038] Real-time monitoring and analysis of lightning accident data, and obtaining the type, degree and impact range of lightning accidents based on the lightning location model;

[0039] The corresponding emergency plan is triggered according to the type of lightning accident, the degree of the lightning accident and the impact range of the lightning accident, and a lightning accident handling suggestion is generated.

[0040] In a third aspect, an embodiment of the present application provides an electronic device including a memory and a processor, wherein the memory is used to store a computer program, and when the computer program is run by the processor, the method for intelligent analysis and positioning of lightning protection accidents in a distribution network provided in the second aspect is executed.

[0041] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium storing a computer program, which, when running on a processor, executes the method for intelligent analysis and positioning of lightning protection accidents in a distribution network provided in the second aspect.

[0042] The above-mentioned distribution network lightning protection accident intelligent analysis and positioning system provided by the present application includes a data acquisition subsystem, a network service subsystem, an accident positioning subsystem, a lightning accident analysis subsystem and an emergency response subsystem; the data acquisition subsystem includes a real-time monitoring unit and a data acquisition unit, the data acquisition subsystem is used to collect distribution network accident data, and collect and analyze the real-time operation data of the power grid; the network service subsystem is used to manage the distribution network accident data, and send the distribution network accident data to the accident positioning subsystem according to the data channel; the accident positioning subsystem is used to analyze the distribution network accident data according to the distribution network accident data. The lightning accident analysis subsystem is used to monitor and analyze the lightning accident data in real time, and obtain the type of lightning accident, the degree of lightning accident and the impact range of lightning according to the lightning location model; the emergency response subsystem is used to trigger the corresponding emergency plan according to the type of lightning accident, the degree of lightning accident and the impact range of lightning, and generate lightning accident handling suggestions, which can obtain lightning accident data in real time and accurately and conduct online evaluation and predictive analysis, reduce the probability of lightning accidents and power outages, and improve the safety and reliability of the distribution network system.

[0043] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and understandable, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work. In each of the drawings, similar components are numbered similarly.

[0045] Figure 1 A schematic diagram of the structure of a power distribution network lightning protection accident intelligent analysis and positioning system provided in an embodiment of the present application is shown;

[0046] Figure 2 A schematic diagram of the structure of a data acquisition subsystem provided in an embodiment of the present application is shown;

[0047] Figure 3 A schematic diagram of the structure of a real-time monitoring unit provided in an embodiment of the present application is shown;

[0048] Figure 4 A schematic diagram of the structure of a network service subsystem provided in an embodiment of the present application is shown;

[0049] Figure 5 A schematic diagram of the structure of an accident location subsystem provided in an embodiment of the present application is shown;

[0050] Figure 6 A schematic diagram of the structure of a lightning accident analysis subsystem provided in an embodiment of the present application is shown;

[0051] Figure 7 A schematic diagram of the structure of an emergency response subsystem provided in an embodiment of the present application is shown;

[0052] Figure 8 A schematic diagram of a flow chart of a method for intelligent analysis and location of lightning protection accidents in a distribution network provided in an embodiment of the present application is shown;

[0053] Fig. 9 A schematic structural diagram of an electronic device provided in an embodiment of the present application is shown. DETAILED DESCRIPTION

[0054] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0055] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. In contrast, when an element is referred to as being "directly on" another element, there is no intermediate element. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0056] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0057] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0058] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of the template are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0059] Example 1

[0060] like Figure 1 As shown, a distribution network lightning protection accident intelligent analysis and positioning system 00 provided in an embodiment of the present application, the system includes a data acquisition subsystem 10, a network service subsystem 20, an accident positioning subsystem 30, a lightning accident analysis subsystem 40 and an emergency response subsystem 50;

[0061] See also Figure 2 The data acquisition subsystem 10 includes a real-time monitoring unit 101 and a data acquisition unit 102. The data acquisition subsystem 10 is used to collect distribution network accident data and collect and analyze real-time operation data of the power grid.

[0062] Specifically, the data acquisition subsystem is electrically connected to the accident location subsystem through the network service subsystem, the accident location subsystem is electrically connected to the lightning accident analysis subsystem, and the lightning accident analysis subsystem is electrically connected to the emergency response subsystem. The data acquisition subsystem can timely discover abnormal conditions in the power grid by collecting and analyzing real-time operation data of the power grid, and provide a data basis for subsequent lightning accident analysis.

[0063] Specifically, see Figure 3 , the real-time monitoring unit 101 includes a surge protector remote signal monitoring subunit 1011, a surge protector action times monitoring subunit 1012, a three-phase voltage monitoring subunit 1013 and a lightning current online monitoring subunit 1014;

[0064] The surge protector remote signal monitoring subunit 1011 is used to alarm and prompt SPD failure when a remote signal alarm switch state change is detected;

[0065] The surge protector action times monitoring subunit 1012 is used for when the SPD is actuated, the single chip microcomputer in the analyzer detects the current value sensed by the lightning strike times sensor, and determines whether to count once after judgment;

[0066] The three-phase voltage monitoring subunit 1013 is used to detect the three-phase voltage;

[0067] The lightning current online monitoring subunit 1014 is used to monitor the peak value, polarity, energy, lightning strike time and number of lightning currents online, and to transmit data in time after a lightning strike occurs.

[0068] Specifically, when the surge protector is tripped, it will drive the remote signal alarm switch to operate. After the single-chip microcomputer in the intelligent analyzer detects the change in the state of the remote signal alarm switch, it will alarm to prompt that the SPD (surge protective device) has failed. When the SPD is activated, the single-chip microcomputer in the analyzer detects the current value sensed by the lightning strike sensor, and determines whether to count once after judgment. The three-phase voltage monitoring subunit includes a current-type voltage transformer and a three-phase electric energy meter. The lightning current online monitoring subunit detects lightning current data through a flexible Rogowski coil.

[0069] Preferably, the data acquisition unit 102 is used to collect grid voltage, grid current, grid power and grid frequency, wherein the grid power is divided into peak power and valley power.

[0070] The network service subsystem 20 is used to manage the distribution network accident data and send the distribution network accident data to the accident location subsystem according to the data channel.

[0071] It can be understood that the network service subsystem uses wireless signal transmission to achieve data transmission, and has the functions of adding, managing and uploading accident data.

[0072] Specifically, see Figure 4 , the network service subsystem 20 includes a wireless remote submodule 201, a host working submodule 202 and an accident data storage submodule 203, the wireless remote submodule 201 is connected to the host working submodule 202 via a data connection line, and the accident data storage submodule 203 is electrically connected to the host working submodule 202;

[0073] The wireless remote submodule 201 is used to complete the on-site information collection and classification and statistical processing of the distribution network, and transmit the classified accident information and pictures taken on-site to the host working submodule;

[0074] The host working submodule 202 is used to classify the accidents of the distribution network according to the accident information, and track and manage the accidents of the distribution network equipment, lines and the whole network;

[0075] The accident data storage submodule 203 is used to store the accident information and accident classification.

[0076] Specifically, the accident location subsystem 30 is used to perform location processing and analysis processing on the lightning accident according to the distribution network accident data.

[0077] Specifically, see Figure 5 , the accident location subsystem 30 includes an accident location unit 301 and an accident distance calculation unit 302;

[0078] The accident location unit 301 is used to establish a corresponding matrix model according to the specific construction of the distribution network, establish an accident data matrix according to the lightning accident data, and calculate the accident data matrix to obtain the lightning accident point;

[0079] The accident distance calculation unit 302 is used to perform off-line short circuit calculation on the lightning accident feedback line based on the medium voltage network analysis model.

[0080] During the specific implementation, the accident location unit uses the lightning accident data to play the role of locating the lightning accident, clarify the source of the lightning accident, and integrate the graphic management and the power grid topology relationship. The lightning accident sequence is analyzed to accurately locate the specific lightning accident point. The positioning processing of the lightning accident point is mainly achieved through FTU (Feeder Terminal Unit). The lightning accident data collected by FTU is analyzed and judged to obtain the accident area.

[0081] Preferably, the accident location unit adopts a short-circuit indicator, which is used for a medium-voltage power grid in radial or open-loop operation and is installed on a current-carrying conductor to be monitored, such as a busbar, cable or overhead line. When current flows through the conductor, the magnetic field triggers the short-circuit indicator. When the current exceeds the rated limit of the indicator, an optical signal will be generated, which will indicate the direction of the short-circuit current transmitted from the head end of the feeder to the accident site through the triggered short-circuit indicator.

[0082] Preferably, the accident distance calculation unit uses a distance relay, and based on the analysis model of the medium voltage network, each feeder is divided into several sections. The division of each section is physically located using the medium voltage station and branch points. The length of the section is between 50-500m, preferably 100m. The telemetry accident is automatically transmitted from the SCADA (Supervisory Control And Data Acquisition) system to the PC to select the corresponding section, and the power system analysis software is used to perform offline short-circuit calculations on each section. The accident distance calculation unit, the SCADA system, and the offline short-circuit calculation can achieve accurate positioning and analysis of faults caused by lightning strikes in the distribution network, improve the automation level of power grid fault management, and ensure the safe and stable operation of the power system.

[0083] The lightning accident analysis subsystem 40 is used to monitor and analyze lightning accident data in real time, and obtain the type of lightning accident, the degree of lightning accident and the impact range of lightning accident according to the lightning location model.

[0084] Specifically, see Figure 6 , the lightning accident analysis subsystem 40 includes an accident information collection unit 401, an accident site investigation unit 402, a data analysis unit 403 and a protection measures evaluation unit 404;

[0085] The accident information collection unit 401 is used to record the time of the accident, the weather conditions at the accident location, and the type and location of the damaged equipment;

[0086] The accident site investigation unit 402 is used to perform an on-site investigation on the accident site, wherein the on-site investigation includes checking for lightning strike marks, checking the status of damaged equipment, and checking the surrounding environment;

[0087] The data analysis unit 403 is used to analyze the intensity, type and probability of lightning strike according to the lightning monitoring data;

[0088] The protection measure evaluation unit 404 is used to evaluate the working status and configuration rationality of existing lightning protection equipment and put forward optimization suggestions.

[0089] Specifically, the surrounding environment includes whether there are tall buildings or trees in the surrounding area, the type of lightning strike includes direct lightning or induced lightning, and the lightning protection equipment includes lightning arresters and lightning rods, etc. The collection of information by the accident information collection unit provides a basis for subsequent analysis and evaluation, and can accurately determine the specific situation and degree of damage of the lightning accident. The actual situation of the lightning accident site is understood through the accident site investigation unit, which is helpful to discover potential safety hazards and evaluate the impact of the accident on the surrounding environment. The performance and configuration of the existing lightning protection equipment are evaluated through the data analysis unit, which can timely discover potential problems, put forward targeted optimization suggestions, and improve the lightning protection effect.

[0090] The emergency response subsystem 50 is used to trigger a corresponding emergency plan according to the type of lightning accident, the degree of the lightning accident and the impact range of the lightning accident, and generate lightning accident handling suggestions.

[0091] Specifically, see Figure 7 , the emergency response subsystem 50 includes an accident alarm module 501, a plan activation module 502 and an emergency repair scheduling module 503;

[0092] The accident alarm module 501 is used to issue an alarm message according to the lightning accident information of the power distribution station;

[0093] The plan starting module 502 is used to isolate the distribution station line according to the distribution station lightning accident information, determine the switch position, and separate the accident line from the non-accident line;

[0094] The emergency repair scheduling module 503 is used to construct the shortest power supply path in the power supply area to be restored according to the accident isolation analysis data.

[0095] It can be understood that the accident alarm module is the first step in emergency response, which can promptly convey lightning accident information to relevant personnel. The plan activation module can quickly isolate the accident line to prevent the accident from expanding, ensure the normal operation of the accident-free line, and provide the necessary conditions for subsequent emergency repair work. The emergency repair scheduling module can use algorithms and models to quickly build the shortest power supply path based on the accident isolation analysis data to ensure the efficient operation of the emergency repair work. At the same time, it can optimize the allocation of emergency repair resources and improve emergency repair efficiency.

[0096] The distribution network lightning protection accident intelligent analysis and positioning system provided in the embodiment of the present application includes a data acquisition subsystem, a network service subsystem, an accident positioning subsystem, a lightning accident analysis subsystem and an emergency response subsystem; the data acquisition subsystem includes a real-time monitoring unit and a data acquisition unit, the data acquisition subsystem is used to collect distribution network accident data, and collect and analyze the real-time operation data of the power grid; the network service subsystem is used to manage the distribution network accident data, and send the distribution network accident data to the accident positioning subsystem according to the data channel; the accident positioning subsystem is used to detect the distribution network accident according to the distribution network accident data. The accident data is used to locate and analyze the lightning accident; the lightning accident analysis subsystem is used to monitor and analyze the lightning accident data in real time, and obtain the type of lightning accident, the degree of lightning accident and the impact range of lightning according to the lightning location model; the emergency response subsystem is used to trigger the corresponding emergency plan according to the type of lightning accident, the degree of lightning accident and the impact range of lightning, and generate lightning accident handling suggestions, which can obtain lightning accident data in real time and accurately and perform online evaluation and predictive analysis, reduce the probability of lightning accidents and power outages, and improve the safety and reliability of the distribution network system.

[0097] Example 2

[0098] like Figure 8 FIG. 1 is a flow chart of a method for intelligent analysis and location of lightning protection accidents in a distribution network provided in an embodiment of the present application, the method comprising:

[0099] Step S801, collecting distribution network accident data, and collecting and analyzing real-time operation data of the power grid.

[0100] Step S802: managing distribution network accident data, and sending the distribution network accident data to the accident location subsystem according to the data channel.

[0101] Step S803: positioning and analyzing the lightning accident according to the power grid accident data.

[0102] Step S804, real-time monitoring and analysis of lightning accident data, and obtaining the type of lightning accident, the degree of lightning accident and the impact range of lightning accident according to the lightning location model.

[0103] Step S805: triggering a corresponding emergency plan according to the type of lightning accident, the degree of the lightning accident and the impact range of the lightning accident, and generating lightning accident handling suggestions.

[0104] The intelligent analysis and positioning method for lightning protection accidents in distribution networks provided in this embodiment is applied to the intelligent analysis and positioning system for lightning protection accidents in distribution networks, and will not be described again here to avoid repetition.

[0105] The intelligent analysis and positioning method for lightning protection accidents in distribution networks provided in the embodiments of the present application is applied to the intelligent analysis and positioning system for lightning protection accidents in distribution networks, the system comprising a data acquisition subsystem, a network service subsystem, an accident positioning subsystem, a lightning accident analysis subsystem and an emergency response subsystem; the data acquisition subsystem comprises a real-time monitoring unit and a data acquisition unit, the data acquisition subsystem is used to collect distribution network accident data, and collect and analyze the real-time operation data of the power grid; the network service subsystem is used to manage distribution network accident data, and send the distribution network accident data to the accident positioning subsystem according to the data channel; the accident positioning subsystem The system is used to locate and analyze lightning accidents based on the distribution network accident data; the lightning accident analysis subsystem is used to monitor and analyze lightning accident data in real time, and obtain the type of lightning accident, the degree of lightning accident and the impact range of lightning according to the lightning location model; the emergency response subsystem is used to trigger corresponding emergency plans based on the type of lightning accident, the degree of lightning accident and the impact range of lightning, and generate lightning accident handling suggestions. It can obtain lightning accident data in real time and accurately and perform online evaluation and predictive analysis, reduce the probability of lightning accidents and power outages, and improve the safety and reliability of the distribution network system.

[0106] Example 3

[0107] In addition, an embodiment of the present disclosure provides an electronic device 900, including a memory and a processor, wherein the memory stores a computer program.

[0108] For details, see Fig. 9 The electronic device 900 includes: a receiver 901, a bus interface and a processor 902.

[0109] In the embodiment of the present invention, the electronic device 900 further includes a memory 903. Fig. 9 In the embodiment, the bus architecture may include any number of interconnected buses and bridges, specifically linking various circuits of one or more processors represented by processor 902 and memory represented by memory 903. The bus architecture may also link various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and are therefore not further described herein. The bus interface provides an interface. The receiver 901 may be a plurality of components, namely, a transmitter and a receiver, providing a unit for communicating with various other devices on a transmission medium. The processor 902 is responsible for managing the bus architecture and general processing, and the memory 903 may store data used by the processor 902 when performing operations.

[0110] The electronic device 900 provided in the embodiment of the present invention can implement the intelligent analysis and positioning method for lightning protection accidents in the distribution network shown in Example 1, which will not be described again here to avoid repetition.

[0111] In several embodiments provided in the present application, it should be understood that the disclosed devices and methods can also be implemented in other ways. The device embodiments described above are merely schematic. For example, the flowcharts and structure diagrams in the accompanying drawings show the possible architecture, functions and operations of the devices, methods and computer program products according to multiple embodiments of the present invention. In this regard, each box in the flowchart or block diagram can represent a module, a program segment or a part of a code, and the module, a program segment or a part of a code contains one or more executable instructions for implementing the specified logical function. It should also be noted that in an alternative implementation, the functions marked in the box can also occur in a different order from the order marked in the accompanying drawings. For example, two consecutive boxes can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each box in the structure diagram and / or the flow chart, and the combination of boxes in the structure diagram and / or the flow chart, can be implemented with a dedicated hardware-based system that performs a specified function or action, or can be implemented with a combination of dedicated hardware and computer instructions.

[0112] In addition, the functional modules or units in the various embodiments of the present invention may be integrated together to form an independent part, or each module may exist independently, or two or more modules may be integrated to form an independent part.

[0113] If the functions are implemented in the form of software function modules and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium, including several instructions for a computer device (which can be a smart phone, a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk, etc., which can store program codes.

[0114] The above description is only a specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An intelligent analysis and positioning system for lightning protection accidents in distribution networks, characterized in that: The system includes a data acquisition subsystem, a network service subsystem, an accident location subsystem, a lightning accident analysis subsystem and an emergency response subsystem; The data acquisition subsystem collects and analyzes the real-time operation data of the power grid to discover abnormal conditions in the power grid and provide a data basis for subsequent lightning accident analysis; The data acquisition subsystem includes a real-time monitoring unit and a data acquisition unit. The data acquisition subsystem is used to collect distribution network accident data and collect and analyze real-time operation data of the power grid; The data acquisition unit is used to collect grid voltage, grid current, grid power and grid frequency, wherein the grid power is divided into peak power and valley power; The network service subsystem is used to manage the distribution network accident data and send the distribution network accident data to the accident location subsystem according to the data channel; The accident location subsystem is used to locate and analyze lightning accidents based on the distribution network accident data; The accident location subsystem includes an accident location unit and an accident distance calculation unit; the accident location unit is used to establish a corresponding matrix model according to the specific construction of the distribution network, establish an accident data matrix according to the lightning accident data, and calculate the accident data matrix to obtain the lightning accident point; the accident distance calculation unit is used to perform offline short-circuit calculation on the lightning accident feedback line based on the medium voltage network analysis model; the accident location unit plays the role of lightning accident location through the lightning accident data, clarifies the source of the lightning accident, integrates the graphic management and the power grid topology relationship, analyzes the lightning accident sequence, and locates the specific lightning accident point; the accident location unit uses a short-circuit indicator to radiate or The medium-voltage power grid in open-loop operation is installed on the current-carrying conductor to be monitored. When the current flows through the conductor, the magnetic field will trigger the short-circuit indicator. When the current exceeds the rated limit of the indicator, an optical signal will be generated, and the triggered short-circuit indicator will indicate the direction of the short-circuit current transmitted from the head end of the feeder to the accident site; the accident distance calculation unit adopts a distance relay, and based on the analysis model of the medium-voltage network, each feeder is divided into several sections. The division of each section is physically located by using the medium-voltage station and the branch point. The length of the section is between 50-500m. The telemetry accident is automatically transmitted from the data acquisition and monitoring control system to the PC to select the corresponding section, and the power system analysis software is used to perform offline short-circuit calculation on each section; Accurate location and analysis of faults caused by lightning strikes in distribution networks can be achieved through accident distance calculation units, data acquisition and monitoring control systems, and offline short-circuit calculations. The real-time monitoring unit includes a surge protector remote signal monitoring subunit, a surge protector action times monitoring subunit, a three-phase voltage monitoring subunit and a lightning current online monitoring subunit; the surge protector remote signal monitoring subunit is used to alarm and prompt SPD failure after detecting a change in the state of the remote signal alarm switch; the surge protector action times monitoring subunit is used when the SPD is actuated, the single-chip microcomputer in the analyzer detects the current value sensed by the lightning strike times sensor, and determines whether to count once after judgment; the three-phase voltage monitoring subunit is used to detect the three-phase voltage; the lightning current online monitoring subunit is used to monitor the peak value, polarity, energy, lightning strike time and number of lightning currents online, and to realize data transmission in time after the lightning strike occurs; The lightning accident analysis subsystem is used to monitor and analyze lightning accident data in real time, and obtain the type of lightning accident, the degree of lightning accident and the impact range of lightning according to the lightning location model; The types of lightning strikes include direct lightning strikes or induction lightning strikes; The emergency response subsystem is used to trigger a corresponding emergency plan according to the type of lightning strike accident, the degree of the lightning strike accident and the impact range of the lightning strike, and generate lightning strike accident handling suggestions; The emergency response subsystem includes an accident alarm module, a plan activation module and an emergency repair scheduling module; the accident alarm module is used to issue an alarm message according to the lightning strike accident information of the distribution station; the plan activation module is used to isolate the distribution station line according to the lightning strike accident information of the distribution station, determine the switch position, and separate the accident line from the non-accident line; The emergency repair scheduling module is used to construct the shortest power supply path in the power supply area to be restored according to the accident isolation analysis data.

2. The intelligent analysis and positioning system for lightning protection accidents in distribution networks according to claim 1 is characterized in that: The network service subsystem includes a wireless remote submodule, a host working submodule and an accident data storage submodule, wherein the wireless remote submodule is connected to the host working submodule via a data connection line, and the accident data storage submodule is electrically connected to the host working submodule; The wireless remote submodule is used to complete the on-site information collection and classification and statistical processing of the distribution network, and transmit the classified accident information and pictures taken on-site to the host working submodule; The host working submodule is used to classify the accidents of the distribution network according to the accident information, and track and manage the accidents of the distribution network equipment, lines and the whole network; The accident data storage submodule is used to store the accident information and accident classification.

3. The intelligent analysis and positioning system for lightning protection accidents in distribution network according to claim 1 is characterized in that: The lightning strike accident analysis subsystem includes an accident information collection unit, an accident site investigation unit, a data analysis unit and a protective measures evaluation unit; The accident information collection unit is used to record the time of the accident, weather conditions at the accident location, and the type and location of the damaged equipment; The accident site investigation unit is used to conduct an on-site investigation of the accident site, wherein the on-site investigation includes checking lightning strike traces, checking the status of damaged equipment, and checking the surrounding environment; The data analysis unit is used to analyze the intensity and type of lightning strikes and the probability of lightning strikes according to lightning monitoring data; The protection measure evaluation unit is used to evaluate the working status and configuration rationality of existing lightning protection equipment and put forward optimization suggestions.

4. A method for intelligent analysis and positioning of lightning protection accidents in distribution networks, characterized in that: Applied to the intelligent analysis and positioning system for lightning protection accidents in a distribution network as described in any one of claims 1 to 3, the method comprises: Collect distribution network accident data, and collect and analyze real-time operation data of the power grid; Managing distribution network accident data, and sending the distribution network accident data to the accident location subsystem according to the data channel; Positioning and analyzing the lightning accident according to the distribution network accident data; Real-time monitoring and analysis of lightning accident data, and obtaining the type, degree and impact range of lightning accidents based on the lightning location model; The corresponding emergency plan is triggered according to the type of lightning accident, the degree of the lightning accident and the impact range of the lightning accident, and a lightning accident handling suggestion is generated.

5. An electronic device, characterized in that: It comprises a memory and a processor, wherein the memory stores a computer program, and when the computer program is run by the processor, the method for intelligent analysis and positioning of lightning protection accidents in a distribution network as claimed in claim 4 is executed.

6. A computer-readable storage medium, characterized in that: It stores a computer program, which, when running on a processor, executes the method for intelligent analysis and positioning of lightning protection accidents in a distribution network as claimed in claim 4.

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