Lightning protection method, device, equipment and storage medium for distribution line

Abstract

The present invention discloses a method, device, equipment and storage medium for lightning protection of distribution lines. The method comprises: obtaining basic line information of each distribution line, determining line dimension evaluation parameters of each distribution line based on historical lightning tripping information, base-tower distribution information, minefield distribution information and arrester installation information, determining user dimension evaluation parameters of each distribution line according to connected user information and line power supply information, performing lightning damage risk evaluation on each distribution line based on line dimension evaluation parameters and user dimension evaluation parameters, determining lightning damage risk coefficients of each distribution line, sorting each distribution line based on the lightning damage risk coefficients, and performing lightning protection on the distribution lines according to the sorting results; because the present invention evaluates line lightning damage risks from multiple dimensions, the lightning damage risks of distribution lines are accurately evaluated, lightning protection management is reasonably performed, and the lightning tripping risks of distribution lines are effectively reduced.

Description

Technical Field

[0001] The present invention relates to the field of electric power technology, and in particular to a method, device, equipment and storage medium for lightning protection of distribution lines. Background Art

[0002] With the progress of society and the development of science, people's demand for electricity in life and work has gradually increased. As an important part of the power supply process, the safety of distribution lines is crucial to the stable operation of the power supply system. Lightning activity is one of the main causes of distribution line failures. Distribution lines that lack ground wires, have low insulation levels, and / or incomplete lightning protection device coverage are extremely susceptible to lightning strikes. Lightning tripping occurs during large-scale lightning activities, affecting residents' electricity use. At present, it is impossible to accurately assess the lightning damage risk of distribution lines, resulting in the inability to reasonably deploy lightning protection devices and effectively prevent lightning tripping problems on lines, which seriously affects users' electricity experience. Summary of the invention

[0003] The main purpose of the present invention is to provide a method, device, equipment and storage medium for lightning protection of distribution lines, aiming to solve the technical problem that the prior art cannot accurately assess the lightning damage risk of distribution lines, resulting in the inability to reasonably deploy lightning protection devices.

[0004] To achieve the above object, the present invention provides a method for lightning protection of distribution lines, the method comprising the following steps:

[0005] Obtaining basic line information of each distribution line, the basic line information including historical lightning tripping information of the distribution line, tower distribution information, minefield distribution information, connected user information, line power supply information and arrester installation information;

[0006] Determine the line dimension evaluation parameters of each distribution line based on the historical lightning tripping information, the base-tower distribution information, the minefield distribution information and the arrester installation information;

[0007] Determine a user dimension evaluation parameter of each distribution line according to the connected user information and the line power supply information;

[0008] Performing a lightning damage risk assessment on each distribution line based on the line dimension assessment parameter and the user dimension assessment parameter to determine a lightning damage risk coefficient for each distribution line;

[0009] The distribution lines are ranked based on the lightning damage risk coefficient, and lightning protection management is performed on the distribution lines according to the ranking results.

[0010] Optionally, the line dimension evaluation parameters include line weighted tripping times, line ground lightning density risk parameters and line arrester comprehensive coverage factor;

[0011] The determining of the line dimension evaluation parameters of each distribution line based on the historical lightning tripping information, the base-tower distribution information, the minefield distribution information and the arrester installation information includes:

[0012] Obtaining the line voltage level of each distribution line;

[0013] Determine the line weighted tripping times of each distribution line according to the historical lightning tripping information and the line voltage level;

[0014] Determine the line-to-ground lightning density risk parameter of each distribution line based on the tower distribution information and the minefield distribution information;

[0015] The line arrester comprehensive coverage factor of each distribution line is determined according to the arrester installation information.

[0016] Optionally, the determining of the line-to-ground lightning density risk parameter of each distribution line based on the tower distribution information and the minefield distribution information includes:

[0017] Determine the total number of line towers of each distribution line and the tower coordinates of each line tower based on the tower distribution information;

[0018] Determine the minefield level of the minefield to which each line tower belongs according to the minefield distribution information and the tower coordinates;

[0019] Obtain historical lightning strike data of the minefields to which each line tower belongs;

[0020] Performing lightning strike analysis on the historical lightning strike data to determine the lightning strike distribution time and lightning strike frequency in the minefield to which each line tower belongs;

[0021] Determine the geographical information of the location of each line tower based on the tower coordinates;

[0022] The line-to-ground lightning density risk parameter of each distribution line is determined according to the lightning strike distribution time, the lightning strike frequency, the total number of line towers, the minefield level and the geographical and topographical information.

[0023] Optionally, the determining the minefield level of the minefield to which each line tower belongs according to the minefield distribution information and the tower coordinates includes:

[0024] Acquire a minefield distribution layer based on the minefield distribution information;

[0025] Acquire a map layer of the area where the power distribution line is located according to the tower coordinates;

[0026] Aggregating the minefield distribution layer with the map layer to obtain a target layer;

[0027] Mark the tower position of the target layer according to the tower coordinates to obtain a tower marking layer;

[0028] The minefield level of the minefield to which each line tower belongs is determined based on the tower marking layer.

[0029] Optionally, determining the line arrester comprehensive coverage factor of each distribution line according to the arrester installation information includes:

[0030] Determine the lightning arrester installation form of each line tower in the distribution line based on the lightning arrester installation information;

[0031] Determine the total number of line towers of each distribution line and the tower coordinates of each line tower according to the tower distribution information;

[0032] Determine the geographical information of the location of each line tower based on the tower coordinates;

[0033] Determine the tower arrester coverage factor of each line tower according to the arrester installation form and the geographical information;

[0034] The comprehensive coverage factor of the line lightning arrester of each distribution line is determined according to the tower lightning arrester coverage factor and the total number of line towers.

[0035] Optionally, the user dimension evaluation parameters include a user importance parameter and a power risk parameter;

[0036] The determining of the user dimension evaluation parameters of each distribution line according to the connected user information and the line power supply information includes:

[0037] Determine the user type, economic impact information and power demand information of the connected users of each distribution line according to the connected user information;

[0038] Determine a user importance parameter of each distribution line based on the user type, the economic impact information and the power demand information;

[0039] Determine the power supply type of each distribution line based on the line power supply information;

[0040] A power supply risk parameter is determined according to the power supply type.

[0041] Optionally, the determining of a user importance parameter of each distribution line based on the user type, the economic impact information and the electricity demand information includes:

[0042] Obtain historical power outage data for each connected user;

[0043] Analyze the historical power outage data to determine the power outage frequency of each connected user;

[0044] Obtain power supply quality feedback information from each connected user;

[0045] Constructing a user profile of each connected user according to the power outage frequency, the power supply quality feedback information, the user type, the economic impact information and the power demand information;

[0046] A user importance parameter of each distribution line is determined based on the user portrait.

[0047] In addition, to achieve the above-mentioned purpose, the present invention also proposes a lightning protection device for distribution lines, the lightning protection device for distribution lines comprising:

[0048] An information acquisition module is used to acquire basic line information of each distribution line, wherein the basic line information includes historical lightning tripping information of the distribution line, tower distribution information, minefield distribution information, connected user information, line power supply information and arrester installation information;

[0049] A line dimension evaluation module, used to determine the line dimension evaluation parameters of each distribution line based on the historical lightning tripping information, the base-tower distribution information, the minefield distribution information and the arrester installation information;

[0050] A user dimension evaluation module, used to determine user dimension evaluation parameters of each distribution line according to the connected user information and the line power supply information;

[0051] A risk assessment module, used to perform a lightning damage risk assessment on each distribution line based on the line dimension assessment parameter and the user dimension assessment parameter, and determine a lightning damage risk coefficient of each distribution line;

[0052] The lightning protection management module is used to sort the distribution lines based on the lightning damage risk coefficient and perform lightning protection management on the distribution lines according to the sorting results.

[0053] In addition, to achieve the above-mentioned purpose, the present application also proposes a distribution line lightning protection management device, which includes: a memory, a processor, and a computer program stored in the memory and executable on the processor, and the computer program is configured to implement the steps of the distribution line lightning protection management method as described above.

[0054] In addition, to achieve the above-mentioned purpose, the present application also proposes a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the steps of the distribution line lightning protection management method as described above are implemented.

[0055] The present invention obtains basic line information of each distribution line, wherein the basic line information includes historical lightning tripping information of the distribution line, base-tower distribution information, minefield distribution information, connected user information, line power supply information and lightning arrester installation information; based on the historical lightning tripping information, the base-tower distribution information, the minefield distribution information and the lightning arrester installation information, the line dimension evaluation parameters of each distribution line are determined; according to the connected user information and the line power supply information, the user dimension evaluation parameters of each distribution line are determined; based on the line dimension evaluation parameters and the user dimension evaluation parameters, the line dimension evaluation parameters are determined. The invention performs lightning damage risk assessment on each distribution line based on the parameters, determines the lightning damage risk coefficient of each distribution line, sorts each distribution line based on the lightning damage risk coefficient, and performs lightning protection management on the distribution line according to the sorting result; since the present invention performs risk assessment from the line dimension and the user dimension respectively, it realizes multi-dimensional risk assessment of the distribution line, improves the accuracy of lightning damage risk assessment of the distribution line, realizes reasonable lightning protection management, greatly reduces the risk of lightning tripping of the distribution line, reduces the impact of lightning damage on the transmission line, improves the reliability and safety of power transmission, and improves the user's power experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0056] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0057] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0058] Figure 1 It is a structural schematic diagram of a distribution line lightning protection device in a hardware operating environment involved in an embodiment of the present invention;

[0059] Figure 2 It is a schematic diagram of the flow chart of the first embodiment of the method for lightning protection of power distribution lines of the present invention;

[0060] Figure 3 It is a flow chart of the second embodiment of the method for lightning protection of power distribution lines of the present invention;

[0061] Figure 4 A data graph of the weighted number of historical lightning strikes in the second embodiment of the method for lightning protection of power distribution lines of the present invention;

[0062] Figure 5 It is a schematic diagram of the flow chart of the third embodiment of the method for lightning protection of power distribution lines of the present invention;

[0063] Figure 6 It is a structural block diagram of the first embodiment of the distribution line lightning protection management device of the present invention.

[0064] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0065] It should be understood that the specific embodiments described herein are only used to explain the present invention, and are not used to limit the present invention.

[0066] Reference Figure 1 , Figure 1 The present invention is a schematic diagram of the structure of a power distribution line lightning protection device in the hardware operating environment involved in the embodiment of the present invention.

[0067] like Figure 1 As shown, the distribution line lightning protection equipment may include: a processor 1001, such as a central processing unit (CPU), a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005. Among them, the communication bus 1002 is used to realize the connection and communication between these components. The user interface 1003 may include a display screen (Display), an input unit such as a keyboard (Keyboard), and the optional user interface 1003 may also include a standard wired interface and a wireless interface. The network interface 1004 may optionally include a standard wired interface and a wireless interface (such as a wireless fidelity (Wireless-Fidelity, WI-FI) interface). The memory 1005 may be a high-speed random access memory (Random Access Memory, RAM), or a stable non-volatile memory (Non-Volatile Memory, NVM), such as a disk storage. The memory 1005 may also be a storage device independent of the aforementioned processor 1001.

[0068] Those skilled in the art will understand that Figure 1 The structure shown in the figure does not constitute a limitation on the distribution line lightning protection and management equipment, and may include more or fewer components than shown in the figure, or a combination of certain components, or a different arrangement of components.

[0069] like Figure 1 As shown, the memory 1005 as a computer-readable storage medium may include an operating system, a network communication module, a user interface module, and a distribution line lightning protection management program.

[0070] exist Figure 1In the distribution line lightning protection management equipment shown, the network interface 1004 is mainly used for data communication with the network server; the user interface 1003 is mainly used for data interaction with the user; the processor 1001 and the memory 1005 in the distribution line lightning protection management equipment of the present invention can be set in the distribution line lightning protection management equipment, and the distribution line lightning protection management equipment calls the distribution line lightning protection management program stored in the memory 1005 through the processor 1001, and executes the distribution line lightning protection management method provided by the embodiment of the present invention.

[0071] The embodiment of the present invention provides a method for lightning protection of distribution lines, referring to Figure 2 , Figure 2 It is a flow chart of the first embodiment of the method for lightning protection of power distribution lines of the present invention.

[0072] In this embodiment, the distribution line lightning protection method includes the following steps:

[0073] Step S10: Obtain basic line information of each distribution line.

[0074] It should be noted that the execution subject of this embodiment can be a computing service device with data processing, network communication and program running functions, such as a tablet computer, a personal computer, a mobile phone, etc., or a terminal electronic device capable of realizing the above functions, etc. The following takes the distribution line lightning protection management equipment (hereinafter referred to as lightning protection equipment) as an example to illustrate this embodiment and the following embodiments.

[0075] It should be noted that the basic line information includes the historical lightning tripping information of the distribution line, the distribution information of each tower, the distribution information of the minefield, the information of the connected users, the line power supply information and the lightning arrester installation information.

[0076] It should be noted that the minefield distribution information may be the above-mentioned historical lightning tripping information, which may be relevant information about the tripping of distribution lines during historical lightning strikes and lightning damage. For example, the historical lightning tripping information may include the number of lightning tripping of distribution lines, the lightning tripping time, etc.

[0077] The above-mentioned pole tower distribution information can be the distribution information of the pole towers of the distribution lines. For example, the pole tower distribution information can include the number, distribution position, distribution path and other information of the pole towers of the distribution lines. The above-mentioned pole towers can be the supporting structure of the distribution lines.

[0078] The above-mentioned minefield distribution information may be information on the distribution area of ​​lightning disasters. For example, the minefield distribution information may be information such as the location of the lightning disaster area and the lightning disaster level.

[0079] The above-mentioned connected user information may be user information connected to the power distribution line. For example, the connected user information may include information such as user type and user power usage.

[0080] The above-mentioned line power supply information may be power supply information of the distribution line. For example, the line power supply information may include the amount of power supply of the distribution line, etc.

[0081] The above-mentioned lightning arrester installation information may be information related to the lightning arrester installation status of the distribution line. For example, the lightning arrester installation information may include the number of lightning arresters installed in the distribution line, the lightning arrester installation form, etc.

[0082] Step S20: determining the line dimension evaluation parameters of each distribution line based on the historical lightning tripping information, the tower distribution information, the minefield distribution information and the arrester installation information.

[0083] It should be noted that the line dimension evaluation parameters can be evaluation parameters for evaluating the lightning damage risk of distribution lines from the analysis dimension of the line. The line dimension evaluation parameters include evaluation parameters of multiple dimensions. For example, lightning protection equipment can analyze line dimension evaluation parameters from dimensions such as line structure, insulation level, line lightning protection measures, historical fault data, environmental factors, and impact of minefields.

[0084] It can be understood that the lightning protection equipment can analyze the historical tripping probability of the distribution line from the dimension of historical faults based on the historical lightning tripping information, analyze the line lightning damage risk from the dimensions of topography, environmental impact, and minefield level based on the base-tower distribution information and the minefield distribution information, and analyze whether the current lightning protection situation of the distribution line can cope with the impact of lightning damage from the dimensions of the current lightning protection control and measures of the distribution line based on the lightning arrester installation information, thereby realizing multi-dimensional analysis and evaluation of the line dimension evaluation parameters of the distribution line.

[0085] Step S30: determining user dimension evaluation parameters of each distribution line according to the connected user information and the line power supply information.

[0086] It should be noted that the user dimension evaluation parameters can be used to evaluate from the user dimension whether a lightning strike on a distribution line will have a serious impact, and to evaluate whether the current lightning protection status of the distribution line can meet user needs.

[0087] It is understandable that different users have different power supply demands. For example, power transmission interruption caused by lightning strikes and tripping can cause huge losses to factories and enterprises. Therefore, it is necessary to strengthen lightning protection control for distribution lines connecting important users. This embodiment analyzes the lightning damage risk of distribution lines from the user dimension, thereby improving the user's electricity experience and significantly reducing user losses caused by power outages.

[0088] It should be understood that the lightning protection equipment can determine the number of power supplies of the distribution line based on the line power supply information. For a line powered by a single power source, it has only one power supply point. Therefore, when a failure occurs in the line powered by a single power source, the power supply of the entire line will be affected due to the lack of backup power supply. Therefore, the risk is relatively high. Therefore, this embodiment can determine the high-risk line powered by a single power source based on the line power supply information, and assess the high-risk line powered by a single power source as a higher risk assessment coefficient, thereby improving the level of lightning protection control.

[0089] In some embodiments, the lightning protection equipment determines the importance of users connected to each distribution line and the amount of power supply of each distribution line based on the connected user information and the line power supply information. For example, users with higher importance are evaluated as high-risk lines, and the lightning protection control level is increased. High-risk lines powered by a single power supply are evaluated as having a higher risk assessment coefficient, and the lightning protection control level is increased.

[0090] Step S40: Performing a lightning damage risk assessment on each distribution line based on the line dimension assessment parameter and the user dimension assessment parameter to determine a lightning damage risk coefficient of each distribution line.

[0091] It should be noted that the lightning damage risk coefficient can reflect the possibility of the line being damaged by lightning and the harmful impact of the line after a fault occurs due to lightning strike.

[0092] It can be understood that this embodiment comprehensively evaluates the lightning damage risk coefficient of each distribution line from the line dimension and the user dimension respectively. For example, based on the user dimension, the user importance, the user power outage impact and the user's historical power outage data are analyzed to perform a user-dimensional lightning damage risk assessment, and based on the line structure, current lightning protection measures, environmental factors and lightning distribution, a line-dimensional lightning damage risk assessment is performed.

[0093] In some embodiments, the lightning protection equipment can combine the evaluation results of the user dimension and the line dimension, and use information fusion methods, such as hierarchical analysis method, entropy weight method, evidence theory, etc., to construct a lightning damage risk assessment model, and calculate the lightning damage risk coefficient of each distribution line based on the lightning damage risk assessment model; it can also analyze the weight ratio of each risk factor by constructing a judgment matrix to determine which factors have the greatest impact on the lightning strike risk of the line.

[0094] In some embodiments, the lightning protection device can determine the lightning damage risk factor P of the distribution line based on the line weighted tripping times, the line ground lightning density risk parameter, the user importance parameter, the power supply risk parameter and the arrester comprehensive coverage factor. For example, the lightning damage risk factor is calculated according to the following formula, where P 1 is the weighted tripping times of the line, P 2 is the line ground flash density risk parameter, P 3 is the user importance parameter, P4 is the power supply risk parameter, F is the comprehensive coverage factor of the lightning arrester, and P is the lightning damage risk factor.

[0095]

[0096] Step S50: sorting the distribution lines based on the lightning damage risk coefficient, and performing lightning protection management on the distribution lines according to the sorting result.

[0097] It is understandable that lightning protection equipment can sort each distribution line based on the lightning damage risk coefficient, so as to conduct a comprehensive assessment of all lines within the unit to which the distribution lines belong. For example, they can be arranged from high to low based on the lightning damage risk coefficient, and then line lightning protection management can be carried out from high to low based on the arrangement order, giving priority to lines with high lightning damage risks and large lightning damage failure impacts.

[0098] For example, for 35 kV distribution lines, a full assessment is conducted on the 35 kV overhead transmission lines within the affiliated unit to obtain the comprehensive risk factor of lightning damage for each line, and the risk factors are arranged from high to low. Finally, lightning protection management of the lines is carried out from high to low.

[0099] In this embodiment, basic line information of each distribution line is obtained, wherein the basic line information includes historical lightning tripping information, base-tower distribution information, minefield distribution information, connected user information, line power supply information, and arrester installation information of the distribution line; line dimension evaluation parameters of each distribution line are determined based on the historical lightning tripping information, the base-tower distribution information, the minefield distribution information, and the arrester installation information; user dimension evaluation parameters of each distribution line are determined according to the connected user information and the line power supply information; and line dimension evaluation parameters of each distribution line are determined based on the line dimension evaluation parameters and the user dimension evaluation parameters. The parameters are used to evaluate the lightning damage risk of each distribution line, determine the lightning damage risk coefficient of each distribution line, sort the distribution lines based on the lightning damage risk coefficient, and perform lightning protection management on the distribution lines according to the sorting results; since this embodiment performs risk assessment from the line dimension and the user dimension respectively, it realizes multi-dimensional risk assessment of the distribution lines, improves the accuracy of lightning damage risk assessment of the distribution lines, realizes reasonable lightning protection management, greatly reduces the risk of lightning tripping of the distribution lines, reduces the impact of lightning damage on the transmission lines, improves the reliability and safety of power transmission, and improves the user's power experience.

[0100] refer to Figure 3 , Figure 3 It is a flow chart of the second embodiment of the method for lightning protection of power distribution lines of the present invention.

[0101] Based on the above first embodiment, in this embodiment, the line dimension evaluation parameters include the line weighted tripping times, the line ground lightning density risk parameter and the line arrester comprehensive coverage factor, and the step S20 further includes:

[0102] Step S201: obtaining the line voltage level of each distribution line;

[0103] It should be noted that the line voltage level can be the voltage level used in the distribution line to be managed. Based on the line voltage level, the corresponding safety and insulation requirements of the distribution line can be determined to ensure the reliable transmission of electric energy and the safety of users.

[0104] Step S202: Determine the line weighted tripping times of each distribution line according to the historical lightning tripping information and the line voltage level.

[0105] It should be noted that the line weighted tripping number may be an indicator for evaluating the tripping risk of a transmission line. The above historical lightning tripping information may include the tripping number and tripping time of a distribution line.

[0106] In some embodiments, the lightning protection device may determine the weighted tripping times of the line based on the frequency of line tripping and the impact of each tripping on the system in a weighted manner.

[0107] In some embodiments, the weighted tripping times of the line include not only the number of tripping times, but also the duration of each tripping, the scope of impact, the economic losses caused, and other factors.

[0108] It is understood that the calculation of the weighted tripping times of the line can refer to the following formula:

[0109]

[0110] Among them, P 1 is the weighted tripping number of the line, for Number of trips per year, H is the line voltage level coefficient, for example, the line voltage level coefficient of a 35 kV line H The line voltage level coefficient of the line with a value of 1, 110 kV H The value is 2.5.

[0111] For example, the lightning tripping data of the line in the past 10 years is collected, and the weighted tripping times are calculated based on the tripping data. The collection results are shown in the following table. Based on the lightning tripping data in Table 1, the weighted tripping times of the line are calculated to be 5.38:

[0112]

[0113] For example, refer to Figure 4 , Figure 4 This is a data graph of the weighted number of historical lightning strikes for a 35 kV distribution line, where the number of trips in 2013 was 4, the number of trips in 2014 was 2, the number of trips in 2015 was 3, the number of trips in 2016 was 5, the number of trips in 2017 was 2, the number of trips in 2018 was 1, the number of trips in 2019 was 1, the number of trips in 2020 was 4, the number of trips in 2021 was 2, and the number of trips in 2022 was 3. Based on the weighted tripping statistics of the historical tripping numbers, the weighted tripping number of the line is determined to be 2.66.

[0114] Step S203: determining a line-to-ground lightning density risk parameter of each distribution line based on the tower distribution information and the minefield distribution information.

[0115] It should be noted that the line-to-ground lightning density risk parameter can be a ground-to-ground lightning density risk factor, that is, the line-to-ground lightning density risk parameter is a parameter used in the power system to assess the risk level that may be caused by ground lightning (i.e., cloud-to-ground lightning) activities in a certain area. For example, ground lightning density is usually defined as the number of ground lightning strikes per square kilometer per year in a certain area, with the unit of times / (km²·a).

[0116] It can be understood that the lightning protection equipment can determine the total number of towers and the minefield level of each tower based on the tower distribution information and minefield distribution information of the distribution line, and determine the line ground flash density risk parameters based on the minefield level and the total number of towers.

[0117] Further, in order to accurately analyze the risk brought by ground-to-ground flash density, the above step S203 may include:

[0118] Step S2031: determining the total number of line towers of each distribution line and the tower coordinates of each line tower based on the tower distribution information.

[0119] It should be noted that the total number of line towers may be the total number of towers connected to the distribution line. The line towers may be towers connected to the distribution line. The tower coordinates may be the location coordinates of each line tower, for example, the tower coordinates may include the longitude and latitude coordinates, altitude data, etc. of the line tower.

[0120] Step S2032: Determine the minefield level of the minefield to which each line tower belongs based on the minefield distribution information and the tower coordinates.

[0121] It should be noted that the minefield level can be a level used to describe the cumulative risk of the minefield, and the lightning protection equipment can be derived from a comprehensive assessment of the frequency and intensity of lightning activity in the area where the line is located, as well as other relevant factors.

[0122] In some embodiments, the level of the minefield can be divided according to the density level of the lightning zone. For example, the area where the lines with a medium lightning risk level are located has more frequent lightning activity; the area where the lines with a lower lightning risk level are located has less lightning activity, and the frequency and intensity of lightning events are relatively low.

[0123] Furthermore, in order to accurately determine the minefield level, thereby improving the accuracy of line lightning strike risk assessment, the above step S2032 may include:

[0124] Step S20321: obtaining a minefield distribution layer based on the minefield distribution information;

[0125] Step S20322: obtaining a map layer of the area where the distribution line is located according to the tower coordinates;

[0126] Step S20323: Aggregate the minefield distribution layer and the map layer to obtain a target layer;

[0127] Step S20324: marking the tower position of the target layer according to the tower coordinates to obtain a tower marking layer;

[0128] Step S20325: Determine the minefield level of the minefield to which each line tower belongs based on the tower marking layer.

[0129] It can be understood that the lightning protection equipment can obtain the ground-to-ground lightning density risk distribution information of each region based on the minefield distribution information, generate a ground-to-ground lightning density risk distribution map based on the ground-to-ground lightning density risk distribution information, and generate a minefield distribution layer based on the ground-to-ground lightning density risk distribution map.

[0130] It should be understood that the lightning protection device can obtain map information of the area where the distribution line is located based on the map data, and generate a map layer of the area where the distribution line is located based on the map information.

[0131] It should be noted that since the minefield distribution layer does not have precise map information and the map layer does not have minefield distribution information, the minefield distribution layer is aggregated with the map layer to achieve layer overlay, thereby realizing the identification of the minefield level of the line tower.

[0132] In some embodiments, the lightning protection equipment can obtain a ground-to-ground lightning density risk distribution map as a base map, aggregate a world map or a regional map with the base map, and verify each line tower coordinate one by one to determine the minefield level of each line tower.

[0133] Step S2033: Obtain historical lightning strike data of the minefield to which each line tower belongs.

[0134] It should be noted that the historical lightning strike data may be relevant data on historical lightning strikes in the minefield where each line tower is located. For example, the historical lightning strike data may include the historical lightning strike frequency, historical lightning strike time, historical lightning strike intensity, etc. of the minefield.

[0135] In some embodiments, the lightning protection equipment may collect lightning activity data in the area where the line is located, including ground lightning density, lightning current amplitude, time distribution of lightning occurrence, etc.

[0136] Step S2034: performing lightning analysis on the historical lightning strike data to determine the lightning strike distribution time and lightning strike frequency of the minefield to which each line tower belongs;

[0137] It is understandable that this embodiment can analyze the characteristics of the minefield to which the line tower belongs by analyzing the historical lightning strike data of the line, including the lightning strike frequency, the fault type caused by the lightning strike and the impact range, so as to determine the characteristics of the minefield and the lightning strike risk of the minefield.

[0138] Step S2035: determining the geographical information of the location of each line tower based on the tower coordinates.

[0139] It is understandable that this embodiment can determine the terrain and landform type of the location of each line tower according to the tower coordinates, because the terrain and landform have a significant impact on lightning activity. For example, mountainous areas and areas with high altitudes may be more susceptible to lightning strikes.

[0140] Step S2036: Determine the line-to-ground lightning density risk parameter of each distribution line according to the lightning strike distribution time, the lightning strike frequency, the total number of line towers, the minefield level and the geographical and geomorphic information.

[0141] In some embodiments, the lightning protection device can calculate the line ground flash density risk parameter based on the following formula, where P 2 is the line ground lightning density risk parameter, n is the total number of line towers, 1 is the number of line towers in the C2 minefield, n 2 The number of line towers belonging to minefields of grade D1 or above. The above-mentioned grade C2 and grade D1 can be the lightning density levels of minefields. For example, the lightning density range of grade C2 is 5.0≤Ng<7.98 (times / km²·a), and the lightning density range of grade D1 is 7.98≤Ng<11.0 (times / km²·a).

[0142]

[0143] For example, there are 90 poles and towers along the entire line, 75 of which are located in C2 minefields, and 15 are located in D1 minefields and above. 2 is 1.17.

[0144] Step S204: Determine the comprehensive coverage factor of the line lightning arrester of each distribution line according to the lightning arrester installation information.

[0145] It should be noted that the comprehensive coverage factor of the line lightning arrester can be a parameter for the protection effect of the lightning arrester currently deployed for the distribution line, which reflects the protection range and effectiveness of the lightning arrester for the line.

[0146] It is understandable that the lightning protection equipment can determine the installation position, protection range, installation quantity and other conditions of the lightning arresters currently deployed on the line based on the lightning arrester installation details to analyze the comprehensive coverage factor of the line lightning arrester, thereby determining whether the lightning arresters currently deployed on the line can effectively protect the line during lightning damage.

[0147] Further, in order to accurately evaluate the protection effect of the distribution line arrester, the above step S204 may include:

[0148] Step S2041: Determine the lightning arrester installation form of each line tower in the distribution line based on the lightning arrester installation information.

[0149] It should be noted that lightning arresters are usually installed on poles and towers, and their protective effect is related to the installation location and installation form. The lightning arrester should be as close to the protected equipment as possible to reduce the impact of lightning overvoltage on the equipment. For example, the lightning arrester installation form can include single-phase installation, two-phase installation, three-phase installation, etc.

[0150] Step S2042: determining the total number of line towers of each distribution line and the tower coordinates of each line tower according to the tower distribution information.

[0151] It should be noted that the total number of line towers may be the total number of towers connected to the distribution line. The line towers may be towers connected to the distribution line. The tower coordinates may be the location coordinates of each line tower, for example, the tower coordinates may include the longitude and latitude coordinates, altitude data, etc. of the line tower.

[0152] Step S2043: determining the geographical information of the location of each line tower based on the tower coordinates.

[0153] It is understandable that this embodiment can determine the terrain and landform type of the location of each line tower according to the tower coordinates, because the terrain and landform have a significant impact on lightning activity. For example, mountainous areas and areas with high altitudes may be more susceptible to lightning strikes.

[0154] Step S2044: determining the tower arrester coverage factor of each line tower according to the arrester installation form and the geographical information.

[0155] It should be noted that for lines with installed arresters, the arrester installation coverage rate is calculated, and the installation form, installation quantity, etc. are taken into consideration. The arrester coverage factor of the line tower is determined with reference to Table 2. For example, for three-phase installation, the arrester coverage factor of the line tower in mountainous terrain is 1:

[0156]

[0157] Step S2045: Determine the comprehensive coverage factor of the line lightning arrester of each distribution line according to the tower lightning arrester coverage factor and the total number of line towers.

[0158] It can be understood that in this embodiment, the comprehensive coverage factor F of the line lightning arrester can be calculated by referring to the following formula, so as to aggregate the tower lightning arrester coverage factors of each line tower of the distribution line and calculate the comprehensive coverage factor, where n is the total number of line towers, m is k is the tower arrester coverage factor of the kth line tower, and F is the line arrester comprehensive coverage factor. For example, if the distribution line is not equipped with an arrester, the arrester comprehensive coverage factor F is 0:

[0159]

[0160] This embodiment obtains the line voltage level of each distribution line, determines the line weighted tripping times of each distribution line according to the historical lightning tripping information and the line voltage level, determines the line-to-ground lightning density risk parameters of each distribution line based on the base-tower distribution information and the lightning zone distribution information, and determines the line lightning arrester comprehensive coverage factor of each distribution line according to the lightning arrester installation information; since this embodiment analyzes the line weighted tripping times, the line-to-ground lightning density risk parameters and the line lightning arrester comprehensive coverage factor respectively, it realizes multi-dimensional analysis of line lightning damage risks, improves the accuracy of risk assessment, takes into account historical lightning damage situations, environmental factors and line importance, ensures the accuracy of assessment, and does not require complex measurements of the lines, thereby improving the efficiency of lightning damage risk assessment and reducing assessment costs.

[0161] refer to Figure 5 , Figure 5 It is a flow chart of the third embodiment of the method for lightning protection of power distribution lines of the present invention.

[0162] Based on the above embodiment, in this embodiment, the user dimension evaluation parameter includes a user importance parameter and a power risk parameter, and the step S30 further includes:

[0163] Step S301: Determine the user type, economic impact information and power demand information of the connected users of each distribution line according to the connected user information.

[0164] It should be noted that the operation and maintenance units conduct inspections on important user lines, including those where power outages may endanger personal safety or cause major social impacts, such as high-speed rail and electric railway traction stations, chemical plants, mining and other users.

[0165] It should be noted that user types may include ordinary residential users, commercial users, industrial users, etc. The above economic impact information may be information related to the influence and contribution of different types of users to the local economy, such as large industrial enterprises, etc. The above power demand information may be user demand information for power consumption and power supply stability.

[0166] Step S302: Determine a user importance parameter of each distribution line based on the user type, the economic impact information and the electricity demand information.

[0167] It is understandable that different types of users have different degrees of dependence on electricity. The users with more electricity consumption may be more important in the power system. For example, data centers, production plants, hospitals and other users have very high requirements for power supply reliability, so the importance factors of these users will be higher.

[0168] In some embodiments, the lightning protection device may set the user importance parameter P3 of ordinary users to 0, the importance parameter of important users to 1, and the importance parameter of urban lifeline users to 1.5.

[0169] Furthermore, in order to accurately evaluate the importance of the user, the above step S302 may include:

[0170] Step S3021: Obtain historical power outage data of each connected user;

[0171] Step S3022: Analyze the historical power outage data to determine the power outage frequency of each connected user;

[0172] Step S3023: Obtaining power supply quality feedback information of each connected user;

[0173] Step S3024: constructing a user profile of each connected user according to the power outage frequency, the power supply quality feedback information, the user type, the economic impact information and the power demand information;

[0174] Step S3025: Determine the user importance parameter of each distribution line based on the user portrait.

[0175] It should be noted that the lightning protection equipment can obtain the historical power outage data of each connected user, pre-process the historical power outage data, eliminate invalid data and duplicate data, and analyze the pre-processed historical power outage data. For example, users with frequent power outages may require higher priority.

[0176] It can be understood that lightning protection equipment can perform feature conversion based on power outage frequency, power supply quality feedback information, user type, economic impact information and electricity demand information, obtain user power consumption feature vectors in multiple dimensions, and build user portraits based on user power consumption feature vectors.

[0177] In some embodiments, the lightning protection device can define a set of label systems for users, covering the user's basic information, electricity consumption behavior, economic impact, etc. For example, users can be divided into categories such as high electricity demand, low electricity demand, and frequent power outage users, and features can be extracted from the collected data, such as power outage frequency, power supply quality feedback, power consumption fluctuations, etc., and these features can be converted into labels for user portraits.

[0178] Step S303: Determine the power supply type of each distribution line based on the line power supply information.

[0179] It should be noted that the power supply type can be the number of power supplies in the distribution line. For a line powered by a single power source, it has only one power supply point. Therefore, when a failure occurs in the line powered by a single power source, the power supply of the entire line will be affected due to the lack of backup power supply. Therefore, the risk is relatively high. Therefore, this embodiment can determine the high-risk line powered by a single power source based on the line power supply information, and assesses the high-risk line powered by a single power source as a higher risk assessment coefficient, thereby improving the lightning protection control level.

[0180] Step S304: determining a power risk parameter according to the power supply type.

[0181] It is understandable that in order to prevent lightning strikes from causing significant impacts on users' electricity consumption, based on the current line equipment conditions, the single power supply lines are sorted out, and the risk coefficient P4 of the single power supply line is set to 1, and the other lines are set to 0.

[0182] This embodiment determines the user type, economic impact information and electricity demand information of the connected users of each distribution line based on the connected user information, determines the user importance parameter of each distribution line based on the user type, the economic impact information and the electricity demand information, determines the power supply type of each distribution line based on the line power supply information, and determines the power risk parameter according to the power supply type, thereby analyzing the electricity demand of each user connected to the distribution line, accurately evaluating the user importance parameter, thereby reducing user losses, improving user electricity experience, and providing protection for lines with high power supply risks, thereby improving the stability of the distribution lines.

[0183] In addition, an embodiment of the present invention also proposes a computer-readable storage medium, on which a distribution line lightning protection management program is stored. When the distribution line lightning protection management program is executed by a processor, the steps of the distribution line lightning protection management method as described above are implemented.

[0184] The computer-readable storage medium provided in the present application may be, for example, a USB flash drive, but is not limited to electrical, magnetic, optical, electromagnetic, infrared, or semiconductor systems, systems or devices, or any combination of the above. More specific examples of computer-readable storage media may include, but are not limited to: an electrical connection with one or more wires, a portable computer disk, a hard disk, a random access memory (RAM: Random Access Memory), a read-only memory (ROM: Read Only Memory), an erasable programmable read-only memory (EPROM: Erasable Programmable Read Only Memory or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM: CD-Read Only Memory), an optical storage device, a magnetic storage device, or any suitable combination of the above. In this embodiment, the computer-readable storage medium may be any tangible medium containing or storing a program, which may be used by or in combination with an instruction execution system, system or device. The program code contained on the computer-readable storage medium may be transmitted using any appropriate medium, including but not limited to: wires, optical cables, RF (Radio Frequency: Radio Frequency), etc., or any suitable combination of the above.

[0185] The above-mentioned computer-readable storage medium may be included in the distribution line lightning protection management equipment; or it may exist independently without being assembled into the distribution line lightning protection management equipment.

[0186] In addition, an embodiment of the present invention further proposes a computer program product, including a distribution line lightning protection management program, which implements the steps of the distribution line lightning protection management method as described above when executed by a processor.

[0187] The specific implementation methods of the computer program product of the present invention are basically the same as the embodiments of the above-mentioned distribution line lightning protection method, and will not be repeated here.

[0188] Reference Figure 6 , Figure 6 It is a structural block diagram of the first embodiment of the distribution line lightning protection management device of the present invention.

[0189] like Figure 6 As shown, the distribution line lightning protection device proposed in the embodiment of the present invention includes:

[0190] The information acquisition module 10 is used to acquire basic line information of each distribution line, wherein the basic line information includes historical lightning tripping information of the distribution line, tower distribution information, minefield distribution information, connected user information, line power supply information and arrester installation information;

[0191] A line dimension evaluation module 20, configured to determine line dimension evaluation parameters of each distribution line based on the historical lightning tripping information, the tower distribution information, the minefield distribution information and the arrester installation information;

[0192] A user dimension evaluation module 30, configured to determine user dimension evaluation parameters of each power distribution line according to the connected user information and the line power supply information;

[0193] A risk assessment module 40, configured to perform a lightning risk assessment on each distribution line based on the line dimension assessment parameter and the user dimension assessment parameter, and determine a lightning risk coefficient of each distribution line;

[0194] The lightning protection management module 50 is used to sort the distribution lines based on the lightning damage risk coefficient and perform lightning protection management on the distribution lines according to the sorting result.

[0195] Furthermore, the line dimension evaluation parameters include line weighted tripping times, line ground lightning density risk parameters and line arrester comprehensive coverage coefficient; the line dimension evaluation module 20 is also used to obtain the line voltage level of each distribution line; determine the line weighted tripping times of each distribution line according to the historical lightning tripping information and the line voltage level; determine the line ground lightning density risk parameters of each distribution line based on the base-by-base tower distribution information and the lightning zone distribution information; determine the line arrester comprehensive coverage coefficient of each distribution line according to the arrester installation information.

[0196] Furthermore, the line dimension assessment module 20 is also used to determine the total number of line towers of each distribution line and the tower coordinates of each line tower based on the tower distribution information; determine the minefield level of the minefield to which each line tower belongs according to the minefield distribution information and the tower coordinates; obtain historical lightning strike data of the minefield to which each line tower belongs; perform lightning strike analysis on the historical lightning strike data to determine the lightning strike distribution time and lightning strike frequency of the minefield to which each line tower belongs; determine the geographical and geomorphic information of the location of each line tower based on the tower coordinates; determine the line-to-ground lightning density risk parameter of each distribution line according to the lightning strike distribution time, the lightning strike frequency, the total number of line towers, the minefield level and the geographical and geomorphic information.

[0197] Furthermore, the line dimension assessment module 20 is also used to obtain a minefield distribution layer based on the minefield distribution information; obtain a map layer of the area where the distribution line is located according to the pole tower coordinates; aggregate the minefield distribution layer with the map layer to obtain a target layer; mark the pole tower position of the target layer according to the pole tower coordinates to obtain a pole tower marking layer; determine the minefield level of the minefield to which each line pole tower belongs based on the pole tower marking layer.

[0198] Furthermore, the line dimension evaluation module 20 is also used to determine the lightning arrester installation form of each line tower in the distribution line based on the lightning arrester installation information; determine the total number of line towers of each distribution line and the tower coordinates of each line tower according to the tower distribution information; determine the geographical information of the location of each line tower based on the tower coordinates; determine the tower lightning arrester coverage factor of each line tower according to the lightning arrester installation form and the geographical information; determine the comprehensive line lightning arrester coverage factor of each distribution line according to the tower lightning arrester coverage factor and the total number of line towers.

[0199] Furthermore, the user dimension evaluation parameters include user importance parameters and power risk parameters; the user dimension evaluation module 30 is also used to determine the user type, economic impact information and electricity demand information of the connected users of each distribution line based on the connected user information; determine the user importance parameters of each distribution line based on the user type, the economic impact information and the electricity demand information; determine the power supply type of each distribution line based on the line power supply information; and determine the power risk parameter based on the power supply type.

[0200] Furthermore, the user dimension assessment module 30 is also used to obtain historical power outage data of each connected user; analyze the historical power outage data to determine the power outage frequency of each connected user; obtain power supply quality feedback information of each connected user; construct a user portrait of each connected user based on the power outage frequency, power supply quality feedback information, the user type, the economic impact information and the electricity demand information; and determine the user importance parameters of each distribution line based on the user portrait.

[0201] In this embodiment, basic line information of each distribution line is obtained, wherein the basic line information includes historical lightning tripping information, base-tower distribution information, minefield distribution information, connected user information, line power supply information, and arrester installation information of the distribution line; line dimension evaluation parameters of each distribution line are determined based on the historical lightning tripping information, the base-tower distribution information, the minefield distribution information, and the arrester installation information; user dimension evaluation parameters of each distribution line are determined according to the connected user information and the line power supply information; and line dimension evaluation parameters of each distribution line are determined based on the line dimension evaluation parameters and the user dimension evaluation parameters. The invention performs lightning damage risk assessment on each distribution line based on the parameters, determines the lightning damage risk coefficient of each distribution line, sorts each distribution line based on the lightning damage risk coefficient, and performs lightning protection management on the distribution line according to the sorting result; since the present invention performs risk assessment from the line dimension and the user dimension respectively, it realizes multi-dimensional risk assessment of the distribution line, improves the accuracy of lightning damage risk assessment of the distribution line, realizes reasonable lightning protection management, greatly reduces the risk of lightning tripping of the distribution line, reduces the impact of lightning damage on the transmission line, improves the reliability and safety of power transmission, and improves the user's power experience.

[0202] The distribution line lightning protection device provided by the present application adopts the distribution line lightning protection method in the above embodiment, which can solve the technical problem of distribution line lightning protection. Compared with the prior art, the beneficial effects of the distribution line lightning protection device provided by the present application are the same as the beneficial effects of the distribution line lightning protection method provided by the above embodiment, and other technical features in the distribution line lightning protection device are the same as the features disclosed in the above embodiment method, which will not be repeated here.

[0203] It should be understood that the above is only an example and does not constitute any limitation on the technical solution of the present invention. In specific applications, technicians in this field can make settings as needed, and the present invention does not limit this.

[0204] It should be noted that the workflow described above is merely illustrative and does not limit the scope of protection of the present invention. In practical applications, technicians in this field can select part or all of them according to actual needs to achieve the purpose of the present embodiment, and no limitation is made here.

[0205] In addition, for technical details that are not described in detail in this embodiment, reference can be made to the lightning protection method for distribution lines provided in any embodiment of the present invention, and will not be repeated here.

[0206] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or system including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or system. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or system including the element.

[0207] The serial numbers of the above embodiments of the present invention are only for description and do not represent the advantages or disadvantages of the embodiments.

[0208] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus a necessary general hardware platform, and of course by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present invention, or the part that contributes to the prior art, can be embodied in the form of a software product, which is stored in a storage medium (such as a read-only memory / random access memory, a magnetic disk, or an optical disk), and includes a number of instructions for enabling a terminal device (which can be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to execute the methods described in each embodiment of the present invention.

[0209] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A method for lightning protection of distribution lines, characterized in that: The distribution line lightning protection management method comprises: Obtaining basic line information of each distribution line, the basic line information including historical lightning tripping information of the distribution line, tower distribution information, minefield distribution information, connected user information, line power supply information and arrester installation information; Determine the line dimension evaluation parameters of each distribution line based on the historical lightning tripping information, the base-tower distribution information, the minefield distribution information and the arrester installation information; Determine a user dimension evaluation parameter of each distribution line according to the connected user information and the line power supply information; Performing a lightning damage risk assessment on each distribution line based on the line dimension assessment parameter and the user dimension assessment parameter to determine a lightning damage risk coefficient for each distribution line; Sorting each distribution line based on the lightning damage risk coefficient, and performing lightning protection management on the distribution line according to the sorting result; The user dimension evaluation parameters include user importance parameters; The determining of the user dimension evaluation parameters of each distribution line according to the connected user information and the line power supply information includes: Obtain historical power outage data for each connected user; Analyze the historical power outage data to determine the power outage frequency of each connected user; Obtain power supply quality feedback information from each connected user; Constructing a user profile of each connected user based on the power outage frequency, power supply quality feedback information, user type, economic impact information, and power demand information; Determine a user importance parameter of each distribution line based on the user portrait; The line dimension evaluation parameters include line weighted tripping times, line ground lightning density risk parameters and line arrester comprehensive coverage factor; The determining of the line dimension evaluation parameters of each distribution line based on the historical lightning tripping information, the base-tower distribution information, the minefield distribution information and the arrester installation information includes: Obtaining the line voltage level of each distribution line; Determine the line weighted tripping times of each distribution line according to the historical lightning tripping information and the line voltage level; Determine the line-to-ground lightning density risk parameter of each distribution line based on the tower distribution information and the minefield distribution information; Determine the line arrester comprehensive coverage factor of each distribution line according to the arrester installation information; The step of determining the line arrester comprehensive coverage factor of each distribution line according to the arrester installation information includes: Determine the lightning arrester installation form of each line tower in the distribution line based on the lightning arrester installation information; Determine the total number of line towers of each distribution line and the tower coordinates of each line tower according to the tower distribution information; Determine the geographical information of the location of each line tower based on the tower coordinates; Determine the tower arrester coverage factor of each line tower according to the arrester installation form and the geographical information; The comprehensive coverage factor of the line lightning arrester of each distribution line is determined according to the tower lightning arrester coverage factor and the total number of line towers. The calculation formula of the comprehensive coverage factor of the line lightning arrester is as follows: Among them, n is the total number of line towers, m is k is the tower arrester coverage factor of the kth line tower, and F is the comprehensive coverage factor of the line arrester; The lightning damage risk factor of the distribution line is calculated based on the following formula: Among them, P1 is the weighted tripping number of the line, P2 is the line ground lightning density risk parameter, P3 is the user importance parameter, P4 is the power supply risk parameter, F is the arrester comprehensive coverage factor, and P is the lightning damage risk factor; The line weighted tripping times are calculated according to the following formula: Among them, P1 is the weighted tripping times of the line, for Number of trips per year, H is the line voltage level coefficient; The line ground flash density risk parameter is calculated according to the following formula: Among them, P2 is the line ground lightning density risk parameter, n is the total number of line towers, n1 is the number of line towers belonging to C2 level minefields, n2 is the number of line towers belonging to D1 level and above minefields, C2 and D1 are both lightning density levels of minefields; The determining of the line-to-ground lightning density risk parameter of each distribution line based on the base-tower distribution information and the minefield distribution information includes: Determine the total number of line towers of each distribution line and the tower coordinates of each line tower based on the tower distribution information; Determine the minefield level of the minefield to which each line tower belongs according to the minefield distribution information and the tower coordinates; Obtain historical lightning strike data of the minefields to which each line tower belongs; Performing lightning strike analysis on the historical lightning strike data to determine the lightning strike distribution time and lightning strike frequency in the minefield to which each line tower belongs; Determine the geographical information of the location of each line tower based on the tower coordinates; Determine the line-to-ground lightning density risk parameter of each distribution line according to the lightning strike distribution time, the lightning strike frequency, the total number of line towers, the minefield level and the geographical and geomorphic information; The step of determining the minefield level of the minefield to which each line tower belongs according to the minefield distribution information and the tower coordinates includes: Acquire a minefield distribution layer based on the minefield distribution information; Acquire a map layer of the area where the power distribution line is located according to the tower coordinates; Aggregating the minefield distribution layer with the map layer to obtain a target layer; Mark the tower position of the target layer according to the tower coordinates to obtain a tower marking layer; Determine the minefield level of the minefield to which each line tower belongs based on the tower marking layer; The user dimension evaluation parameters include user importance parameters and power risk parameters; The determining of the user dimension evaluation parameters of each distribution line according to the connected user information and the line power supply information includes: Determine the user type, economic impact information and power demand information of the connected users of each distribution line according to the connected user information; Determine a user importance parameter of each distribution line based on the user type, the economic impact information and the power demand information; Determine the power supply type of each distribution line based on the line power supply information; A power supply risk parameter is determined according to the power supply type.

2. A lightning protection device for distribution lines, characterized in that: The distribution line lightning protection device comprises: An information acquisition module is used to acquire basic line information of each distribution line, wherein the basic line information includes historical lightning tripping information of the distribution line, tower distribution information, minefield distribution information, connected user information, line power supply information and arrester installation information; A line dimension evaluation module, used to determine the line dimension evaluation parameters of each distribution line based on the historical lightning tripping information, the base-tower distribution information, the minefield distribution information and the arrester installation information; A user dimension evaluation module, used to determine user dimension evaluation parameters of each distribution line according to the connected user information and the line power supply information; A risk assessment module, used to perform a lightning damage risk assessment on each distribution line based on the line dimension assessment parameter and the user dimension assessment parameter, and determine a lightning damage risk coefficient of each distribution line; A lightning protection management module, used to sort each distribution line based on the lightning damage risk coefficient, and perform lightning protection management on the distribution line according to the sorting result; The line dimension evaluation parameters include line weighted tripping times, line ground lightning density risk parameters and line arrester comprehensive coverage factor; The user dimension evaluation module is further used to obtain the line voltage level of each distribution line; determine the line weighted tripping times of each distribution line according to the historical lightning tripping information and the line voltage level; determine the line-to-ground lightning density risk parameter of each distribution line based on the base-by-base tower distribution information and the minefield distribution information; determine the line arrester comprehensive coverage factor of each distribution line according to the arrester installation information; The user dimension evaluation module is also used to determine the lightning arrester installation form of each line tower in the distribution line based on the lightning arrester installation information; determine the total number of line towers of each distribution line and the tower coordinates of each line tower according to the tower distribution information; determine the geographical information of the location of each line tower based on the tower coordinates; determine the tower lightning arrester coverage factor of each line tower according to the lightning arrester installation form and the geographical information; determine the line lightning arrester comprehensive coverage factor of each distribution line according to the tower lightning arrester coverage factor and the total number of line towers, and the calculation formula of the line lightning arrester comprehensive coverage factor is as follows: Among them, n is the total number of line towers, m is k is the tower arrester coverage factor of the kth line tower, and F is the comprehensive coverage factor of the line arrester; The line weighted tripping times are calculated according to the following formula: Among them, P1 is the weighted tripping times of the line, for Number of trips per year, H is the line voltage level coefficient; The line ground flash density risk parameter is calculated according to the following formula: Among them, P2 is the line ground lightning density risk parameter, n is the total number of line towers, n1 is the number of line towers belonging to C2 level minefields, n2 is the number of line towers belonging to D1 level and above minefields, C2 and D1 are both lightning density levels of minefields; The line dimension assessment module is further used to determine the total number of line towers of each distribution line and the tower coordinates of each line tower based on the tower distribution information; determine the minefield level of the minefield to which each line tower belongs according to the minefield distribution information and the tower coordinates; obtain historical lightning strike data of the minefield to which each line tower belongs; perform lightning strike analysis on the historical lightning strike data to determine the lightning strike distribution time and lightning strike frequency of the minefield to which each line tower belongs; determine the geographical and geomorphic information of the location of each line tower based on the tower coordinates; determine the line-to-ground lightning density risk parameter of each distribution line according to the lightning strike distribution time, the lightning strike frequency, the total number of line towers, the minefield level and the geographical and geomorphic information; The line dimension evaluation module is further used to obtain a minefield distribution layer based on the minefield distribution information; obtain a map layer of the area where the distribution line is located according to the pole tower coordinates; aggregate the minefield distribution layer with the map layer to obtain a target layer; mark the target layer with the pole tower position according to the pole tower coordinates to obtain a pole tower marking layer; determine the minefield level of the minefield to which each line pole tower belongs based on the pole tower marking layer; the user dimension evaluation parameters include a user importance parameter and a power supply risk parameter; The line dimension assessment module is also used to determine the user type, economic impact information and electricity demand information of the connected users of each distribution line based on the connected user information; determine the user importance parameters of each distribution line based on the user type, the economic impact information and the electricity demand information; determine the power supply type of each distribution line based on the line power supply information; and determine the power risk parameter based on the power supply type.

3. A lightning protection device for power distribution lines, characterized in that: The distribution line lightning protection management equipment includes: a memory, a processor, and a distribution line lightning protection management program stored in the memory and executable on the processor, wherein the distribution line lightning protection management program is configured to implement the distribution line lightning protection management method as described in claim 1.

4. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a distribution line lightning protection management program, and when the distribution line lightning protection management program is executed by the processor, the distribution line lightning protection management method according to claim 1 is implemented.

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