Lightning stroke prediction device, method and equipment for overhead cable erection

Abstract

The invention discloses a lightning stroke prediction device, method and equipment for a high-altitude erected cable, and belongs to the technical field of electric power facilities. The device comprises an environment model building module which is used for obtaining an environment model of a high-altitude erection environment of a cable; the cable parameter acquisition module is used for acquiring working parameters and physical parameters of the cable; the probability analysis module is used for determining the lightning stroke probability of each position of the cable according to the environment model, the working parameters and the physical parameters; and the lightning stroke event monitoring module is used for determining the predicted occurrence position of the lightning stroke event according to the lightning stroke occurrence area and the lightning stroke probability of each position of the cable. According to the technical scheme, the lightning stroke probability of each position of the cable is determined according to the environment model of the high-altitude erection environment of the cable and the working parameters and the physical parameters of the cable, accurate prediction of the position of the cable where a lightning stroke event possibly occurs can be achieved, and therefore quick response and processing of the cable lightning stroke accident are achieved.

Description

Technical Field

[0001] The present application belongs to the technical field of electric power facilities, and specifically relates to a lightning strike prediction device, method and equipment for high-altitude cable installation. Background Art

[0002] Laying cables at high altitudes can prevent them from being disturbed and damaged by obstacles on the ground. Specifically, compared with buried cables, cables laid at high altitudes can cross complex terrains such as mountains, rivers and tall buildings, greatly shortening the distance of transmission lines and improving transmission efficiency. At the same time, cables laid at high altitudes can avoid damage to cables caused by geological changes and construction operations.

[0003] However, the air in the high-altitude environment is thin and the electric field is strong, which is more conducive to the generation and propagation of lightning. In addition, the conductive properties of the cable itself increase the risk of the cable being struck by lightning. When the cable is struck by lightning, the high voltage generated by the lightning will directly destroy the insulation layer of the cable, causing a short circuit inside the cable, seriously affecting the safety of power transmission. Therefore, how to quickly predict the location of the cable where a lightning strike may occur and deal with it in time is an urgent problem that people in this field need to solve. Summary of the invention

[0004] The embodiments of the present application provide a lightning strike prediction device, method and equipment for high-altitude cable installation, with the aim of achieving accurate prediction of cable locations where lightning strikes may occur, thereby achieving rapid response and handling of cable lightning strike accidents.

[0005] In a first aspect, an embodiment of the present application provides a lightning strike prediction device for a high-altitude cable installation, the device comprising:

[0006] An environmental model building module is used to obtain an environmental model of the high-altitude installation environment of the cable;

[0007] The cable parameter acquisition module is used to obtain the working parameters and physical parameters of the cable;

[0008] A probability analysis module, used to determine the probability of lightning strike at each position of the cable according to the environmental model, the operating parameters and the physical parameters;

[0009] The lightning strike event monitoring module is used to determine the predicted occurrence location of the lightning strike event according to the lightning strike occurrence area and the lightning strike probability at each position of the cable.

[0010] In a second aspect, an embodiment of the present application provides a method for predicting lightning strikes on overhead cables, the method comprising:

[0011] Obtain the environmental model of the high-altitude installation environment of the cable through the environmental model building module;

[0012] The working parameters and physical parameters of the cable are obtained through the cable parameter acquisition module;

[0013] Determine the lightning strike probability of each position of the cable according to the environmental model, the working parameters and the physical parameters through a probability analysis module;

[0014] The predicted occurrence location of the lightning strike event is determined by the lightning strike event monitoring module according to the lightning strike occurrence area and the lightning strike probability at each position of the cable.

[0015] In a third aspect, an embodiment of the present application provides an electronic device, which includes a processor, a memory, and a program or instruction stored in the memory and executable on the processor, wherein the program or instruction, when executed by the processor, implements the steps of the method described in the first aspect.

[0016] In a fourth aspect, an embodiment of the present application provides a readable storage medium, on which a program or instruction is stored, and when the program or instruction is executed by a processor, the steps of the method described in the first aspect are implemented.

[0017] In a fifth aspect, an embodiment of the present application provides a chip, comprising a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run a program or instruction to implement the method described in the first aspect.

[0018] In the embodiment of the present application, the environmental model construction module is used to obtain the environmental model of the high-altitude installation environment of the cable; the cable parameter acquisition module is used to obtain the working parameters and physical parameters of the cable; the probability analysis module is used to determine the lightning strike probability of each position of the cable according to the environmental model, the working parameters and the physical parameters; the lightning strike event monitoring module is used to determine the predicted occurrence location of the lightning strike event according to the lightning strike occurrence area and the lightning strike probability of each position of the cable. The above-mentioned lightning strike prediction device for high-altitude installed cables can achieve accurate prediction of the cable position where a lightning strike event may occur by determining the lightning strike probability of each position of the cable according to the environmental model of the high-altitude installation environment of the cable and the working parameters and physical parameters of the cable, thereby achieving rapid response and processing of cable lightning strike accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of a lightning strike prediction device for overhead cable installation provided in Example 1 of the present application;

[0020] Figure 2 It is a structural schematic diagram of a lightning strike prediction device for high-altitude cable installation provided in Example 2 of the present application;

[0021] Figure 3It is a structural schematic diagram of a lightning strike prediction device for high-altitude cable installation provided in Example 3 of the present application;

[0022] Figure 4 It is a flow chart of a method for predicting lightning strikes on overhead cables provided in Example 5 of the present application;

[0023] Figure 5 It is a structural diagram of an electronic device provided in Example 6 of the present application. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical scheme and advantages of the present application clearer, the specific embodiments of the present application are further described in detail below in conjunction with the accompanying drawings. It is understood that the specific embodiments described herein are only used to explain the present application, rather than to limit the present application. It should also be noted that, for the convenience of description, only the part related to the present application but not all the contents are shown in the accompanying drawings. Before discussing the exemplary embodiments in more detail, it should be mentioned that some exemplary embodiments are described as processes or methods depicted as flow charts. Although the flow chart describes each operation (or step) as a sequential process, many of the operations therein can be implemented in parallel, concurrently or simultaneously. In addition, the order of each operation can be rearranged. The process can be terminated when its operation is completed, but it can also have additional steps not included in the accompanying drawings. The process can correspond to a method, a function, a procedure, a subroutine, a subprogram, etc.

[0025] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application belong to the scope of protection of this application.

[0026] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0027] In the following, in conjunction with the accompanying drawings, the lightning strike prediction device, method and equipment for high-altitude cable installation provided by the embodiments of the present application are described in detail through specific embodiments and their application scenarios.

[0028] Embodiment 1

[0029] Figure 1 Schematic diagram of the structure of the lightning strike prediction device for high-altitude cable installation provided in Example 1 of the present application. Figure 1 As shown, the device comprises:

[0030] An environmental model building module 110 is used to obtain an environmental model of the high-altitude installation environment of the cable;

[0031] The cable parameter acquisition module 120 is used to acquire the working parameters and physical parameters of the cable;

[0032] A probability analysis module 130, for determining the probability of lightning strike at each position of the cable according to the environmental model, the operating parameters and the physical parameters;

[0033] The lightning strike event monitoring module 140 is used to determine the predicted occurrence location of the lightning strike event according to the lightning strike occurrence area and the lightning strike probability at each position of the cable.

[0034] This application is applicable to the scenario of predicting the cable location where a lightning strike may occur. Specifically, the acquisition of environmental models and cable parameters, the determination of lightning strike probability, and the determination of predicted occurrence locations can be performed by intelligent terminal devices. When lightning weather has occurred and the cable is operating abnormally, the staff can check the predicted location of the lightning strike event to restore the normal operation of the cable as soon as possible.

[0035] Based on the above usage scenarios, it can be understood that the executor of the present application can be a smart terminal device, such as a desktop computer, a laptop computer, a mobile phone, a tablet computer, and interactive multimedia, etc., and no excessive limitations are made here.

[0036] The environment model building module 110 is used to obtain an environment model of the high-altitude installation environment of the cable.

[0037] Cable is a device that can be used for communication or power transmission. High-altitude installation can refer to a method of laying cables on poles or towers, making the cables far above the ground. The high-altitude installation environment refers to the geographical environment where the cables are installed.

[0038] The environmental model may be a three-dimensional model that describes the geographic information of the high-altitude installation environment and the cable installation information. The method of obtaining the environmental model of the high-altitude installation environment of the cable may be to obtain the location information of each position of the cable, obtain the terrain data of the high-altitude installation environment of the cable, and construct the environmental model of the high-altitude installation environment of the cable based on the location information and the terrain data.

[0039] The cable parameter acquisition module 120 is used to acquire the working parameters and physical parameters of the cable.

[0040] The operating parameters of the cable may refer to the electrical performance parameters of the cable in operation, and may include operating voltage parameters. The operating parameters of the cable may be acquired through a corresponding data acquisition device, for example, the operating voltage data may be acquired through a voltmeter.

[0041] The physical parameters of the cable may be parameters used to describe the physical properties of the cable, and may include insulation material parameters and insulation thickness parameters. The physical parameters of the cable are generally recorded in the cable production report and specification documents related to the cable, and the physical parameters of the cable may be obtained by reading the specification documents.

[0042] The probability analysis module 130 is used to determine the lightning strike probability at each position of the cable according to the environmental model, the operating parameters and the physical parameters.

[0043] The lightning strike probability of a cable position may be a percentage value describing the possibility of a lightning strike event occurring at the cable position when the cable position is in a lightning occurrence area. The lightning strike probability of each cable position may be determined by determining a first lightning strike probability parameter of each cable position according to an environmental model, determining a second lightning strike probability parameter of each cable position according to working parameters and physical parameters, and determining the lightning strike probability of each cable position according to the first lightning strike probability parameter and the second lightning strike probability parameter.

[0044] The lightning strike event monitoring module 140 is used to determine the predicted occurrence location of the lightning strike event according to the lightning strike occurrence area and the lightning strike probability at each position of the cable.

[0045] The lightning strike area may refer to an area where there is lightning weather in the high-altitude installation environment of the cable. Lightning is a naturally occurring high-temperature and high-pressure discharge phenomenon, and is a form of static electricity discharge in the atmosphere. The lightning strike area can be confirmed by querying the meteorological data of the geographical area where the high-altitude installation environment of the cable is located.

[0046] A lightning strike event may refer to a situation where the insulation layer of a cable is broken down by lightning. A predicted location of a lightning strike event may refer to a cable location where the possibility of a lightning strike event is high and where a field inspection by a staff member is required.

[0047] The method for determining the predicted location of a lightning strike event can be to determine the lightning frequency in the lightning strike area and the cable location information in the lightning strike area, and determine the predicted location of the lightning strike event based on the lightning frequency and the lightning probability of the cable location information.

[0048] In the present technical solution, optionally, the lightning strike event monitoring module is specifically used to:

[0049] Determine the lightning frequency in the lightning strike area and the location information of the cables in the lightning strike area;

[0050] The predicted occurrence location of the lightning strike event is determined according to the lightning occurrence frequency and the lightning strike probability of the cable position information.

[0051] The frequency of lightning occurrence may refer to the number of times lightning occurs in a lightning occurrence area per unit time. The frequency of lightning occurrence may be confirmed based on meteorological data analysis of the geographical area where the high-altitude installation environment of the cable is located.

[0052] The method for determining the cable position information in the lightning strike area is to compare each cable position with the lightning strike area. If a cable position is in the lightning strike area, the cable position is determined as the cable position information in the lightning strike area.

[0053] The method for determining the predicted location of a lightning strike event can be to divide the lightning occurrence frequency by the preset standard occurrence frequency, and multiply it by the lightning strike probability of the cable location information to obtain the final lightning strike probability of the cable location information in the lightning occurrence area, compare the final lightning strike probability with the preset probability threshold, and if the final lightning strike probability exceeds the preset probability threshold, the cable location information is determined as the predicted location of the lightning strike event. Among them, the preset standard occurrence frequency can be a pre-set reference value used to measure the intensity of lightning activity in the lightning strike occurrence area. It can be understood that if the lightning occurrence frequency in the lightning strike occurrence area exceeds the preset standard occurrence frequency, the cable location in the lightning strike occurrence area is more likely to have a lightning strike event; the preset probability threshold can be the lower limit of the final lightning strike probability indicating that the cable location information is likely to have a lightning strike event, and the staff needs to conduct an on-site inspection. It can be understood that the higher the preset probability threshold, the more accurate the predicted location is, but it is also easy to ignore some cable locations with a low final lightning strike probability but actual lightning strike events.

[0054] The advantage of this arrangement of the present scheme is that by determining the predicted location of a lightning strike event based on the lightning frequency in the lightning strike area and the lightning strike probability of the cable position information in the lightning strike area, the actual intensity of lightning activity in the lightning strike area can be taken into account, thereby improving the accuracy of the determined predicted location.

[0055] In the example of the present application, the environmental model construction module is used to obtain the environmental model of the high-altitude installation environment of the cable; the cable parameter acquisition module is used to obtain the working parameters and physical parameters of the cable; the probability analysis module is used to determine the lightning strike probability of each position of the cable according to the environmental model, the working parameters and the physical parameters; the lightning strike event monitoring module is used to determine the predicted location of the lightning strike event according to the lightning strike area and the lightning strike probability of each position of the cable. This technical solution can achieve accurate prediction of the cable position where the lightning strike event may occur by determining the lightning strike probability of each position of the cable according to the environmental model of the high-altitude installation environment of the cable and the working parameters and physical parameters of the cable, thereby achieving rapid response and processing of cable lightning strike accidents.

[0056] Embodiment 2

[0057] Figure 2 It is a structural diagram of the lightning strike prediction device for high-altitude cable installation provided in Example 2 of the present application. This solution has made better improvements on the basis of the above-mentioned embodiments, and the specific improvements are as follows: the environmental model construction module includes: a cable position acquisition unit, which is used to obtain the position information of each position of the cable; a terrain data acquisition unit, which is used to obtain the terrain data of the high-altitude installation environment of the cable; and an environmental model construction unit, which is used to construct an environmental model of the high-altitude installation environment of the cable according to the position information and the terrain data.

[0058] like Figure 2 As shown, the device comprises:

[0059] An environmental model building module 210 is used to obtain an environmental model of the high-altitude installation environment of the cable;

[0060] The cable parameter acquisition module 220 is used to acquire the working parameters and physical parameters of the cable;

[0061] A probability analysis module 230, for determining the probability of lightning strike at each position of the cable according to the environmental model, the operating parameters and the physical parameters;

[0062] The lightning strike event monitoring module 240 is used to determine the predicted occurrence location of the lightning strike event according to the lightning strike occurrence area and the lightning strike probability at each position of the cable.

[0063] The environment model building module 210 includes:

[0064] The cable position acquisition unit 2101 is used to acquire the position information of each position of the cable;

[0065] A terrain data acquisition unit 2102 is used to obtain terrain data of the high-altitude installation environment of the cable;

[0066] The environment model building unit 2103 is used to build an environment model of the high-altitude installation environment of the cable according to the location information and the terrain data.

[0067] The location information of each position of the cable may refer to the latitude and longitude coordinates and height information of each position of the cable. The location information of each position of the cable may be obtained by a positioning device and a distance sensor installed on the cable, or may be determined based on the topological structure information of the cable and the tower layout information.

[0068] In the technical solution, optionally, the cable position acquisition unit is specifically used to:

[0069] Obtain cable topology information and tower layout information;

[0070] The location information of each cable position is determined according to the topological structure information and the tower layout information.

[0071] The topological structure information of the cable may be information describing the spatial connection and mutual relationship of the cable, and may include topological relationship information such as the cable direction, branching, and line crossing. The cable tower layout information may be information describing the physical characteristics of the cable tower, and may include information such as the location, height, and spacing of the cable tower. Among them, the cable tower may be the main structural component used to support and fix the cable at high altitude, and is generally made of metal or concrete.

[0072] The cable topology information and tower layout information can be obtained by conducting field data detection on each cable tower to obtain the cable tower layout information, and recording and organizing the cable information on each cable tower to obtain the cable topology information; it can also be obtained by querying the power grid management information system, where the power grid management information system can refer to an important technical platform used by power companies to manage and monitor power grid operations, which can display the power grid topology and load conditions.

[0073] The method for determining the location information of each cable position is to determine the cable tower corresponding to each cable according to the cable topological structure information, and determine the location information of each cable position between two adjacent cable towers according to the positions and heights of two adjacent cable towers corresponding to one cable. By performing the above operation on any two adjacent cable towers of each cable, the location information of each position of the entire cable can be obtained.

[0074] The benefit of this arrangement of the scheme is that by determining the location information of each cable location based on the topological structure information and the tower layout information, the amount of data collection can be greatly reduced and the efficiency of determining the location information of each cable location can be improved.

[0075] The topographic data of the high-altitude installation environment of the cable can be digital information describing the three-dimensional spatial form of the surface of the high-altitude installation environment of the cable, and can include the location information and altitude information of each position in the high-altitude installation environment of the cable. The topographic data of the high-altitude installation environment of the cable can be obtained by using remote sensing technology on the high-altitude installation environment, and can also be obtained by querying an open source geographic information data sharing platform.

[0076] According to the location information and terrain data, an environmental model of the high-altitude installation environment of the cable can be constructed. GIS (Geographic Information Science) software can be used to convert the terrain data into a three-dimensional terrain grid model, and a cable model can be established in the three-dimensional terrain grid model according to the location information of the cable to obtain the environmental model of the high-altitude installation environment of the cable.

[0077] The advantage of this arrangement of the present scheme is that, by constructing an environmental model of the high-altitude installation environment of the cable based on the location information of each position of the cable and the terrain data of the high-altitude installation environment of the cable, various factors affecting the probability of lightning strikes in the high-altitude installation environment of the cable can be fully considered, thereby improving the accuracy of the probability of lightning strikes.

[0078] Embodiment 3

[0079] Figure 3 It is a structural diagram of the lightning strike prediction device for high-altitude cable installation provided in Example 3 of the present application. This solution has made better improvements on the basis of the above-mentioned embodiments, and the specific improvements are as follows: the probability analysis module includes: a first probability determination unit, which is used to determine the first lightning strike probability parameter of each position of the cable according to the environmental model; a second probability determination unit, which is used to determine the second lightning strike probability parameter of each position of the cable according to the working parameters and the physical parameters; a lightning strike probability determination unit, which is used to determine the lightning strike probability of each position of the cable according to the first lightning strike probability parameter and the second lightning strike probability parameter.

[0080] like Figure 3 As shown, the device comprises:

[0081] An environmental model building module 310 is used to obtain an environmental model of the high-altitude installation environment of the cable;

[0082] The cable parameter acquisition module 320 is used to acquire the working parameters and physical parameters of the cable;

[0083] A probability analysis module 330, for determining the probability of lightning strike at each position of the cable according to the environmental model, the operating parameters and the physical parameters;

[0084] The lightning strike event monitoring module 340 is used to determine the predicted occurrence location of the lightning strike event according to the lightning strike occurrence area and the lightning strike probability at each position of the cable.

[0085] Wherein, the probability analysis module 330 includes:

[0086] A first probability determination unit 3301 is used to determine a first lightning strike probability parameter at each position of the cable according to the environmental model;

[0087] A second probability determination unit 3302, configured to determine a second lightning strike probability parameter at each position of the cable according to the working parameter and the physical parameter;

[0088] The lightning strike probability determination unit 3303 is used to determine the lightning strike probability at each position of the cable according to the first lightning strike probability parameter and the second lightning strike probability parameter.

[0089] The first lightning strike probability parameter may be an environmental model that only considers the high-altitude installation environment of the cable, and determines the lightning strike probability of each position of the cable; the second lightning strike probability parameter may be an environmental model that only considers the working parameters and physical parameters of the cable, and determines the lightning strike probability of each position of the cable.

[0090] The method for determining the first lightning strike probability parameter at each position of the cable can be to determine the absolute height information, relative height information and distance information from the lightning protection device of each position of the cable according to the environmental model, and determine the first lightning strike probability parameter at each position of the cable according to the absolute height information, relative height information and distance information; the method for determining the second lightning strike probability parameter at each position of the cable can be to determine the lightning resistance level of the cable according to the insulation layer material parameters and the insulation layer thickness parameters, and determine the second lightning strike probability parameter at each position of the cable according to the lightning resistance level and operating voltage parameters.

[0091] In this technical solution, optionally, the first probability determination unit is specifically used to:

[0092] Determine the absolute height information, relative height information and distance information from the lightning protection device at each position of the cable according to the environmental model;

[0093] A first lightning strike probability parameter at each position of the cable is determined according to the absolute height information, the relative height information, and the distance information.

[0094] Absolute height information may refer to the altitude of the cable, relative height information may refer to the height of the cable from the ground surface, and distance information from the lightning arrester may refer to the distance between the cable position and the nearest lightning arrester. Among them, the lightning arrester may be a device used to prevent lightning from striking the cable, and may include a lightning rod, a lightning strip, and a lightning arrester. To determine the absolute height information, relative height information, and distance information from the lightning arrester at each position of the cable, the relative height information of each position of the cable between two adjacent cable towers may be determined based on the height of the two cable towers, the absolute height information may be obtained by adding the altitude and relative height information in the terrain data, and the distance length between each position of the cable and each lightning arrester is determined, and the shortest distance length is determined as the distance information from the lightning arrester.

[0095] The method of determining the first lightning strike probability parameter of each position of the cable according to the absolute height information, the relative height information and the distance information can be adopted to determine the first environmental probability according to the absolute height information and the pre-constructed correlation between the absolute height and the first environmental probability, determine the maximum points and the minimum points of the relative height information, take the ratio of the distance between each position of the cable and the nearest maximum point and the distance between the nearest maximum point and the nearest minimum point as the second environmental probability, take the ratio of the distance information to the lightning protection device and the lightning protection radius of the lightning protection device as the third environmental probability, multiply the first environmental probability, the second environmental probability and the third environmental probability to obtain the first lightning strike probability parameter.

[0096] Among them, the correlation between the absolute height and the first environment probability can be a positive correlation, and the higher the absolute height, the greater the first environment probability. Specifically, each absolute height interval and the corresponding first environment probability can be pre-set. For example, the absolute height interval is less than 500 meters, and the corresponding first environment probability is 10%-20%; the absolute height interval is 500 meters to 1000 meters, and the corresponding first environment probability is 20%-40%; the absolute height interval is 1000 meters to 1500 meters, and the corresponding first environment probability is 40%-60%; the absolute height interval is 1500 meters to 2000 meters, and the corresponding first environment probability is 60%-80%; the absolute height interval is above 2000 meters, and the corresponding first environment probability is 80%-95%.

[0097] Here is a sample code to determine the first lightning strike probability parameters:

[0098]

[0099]

[0100] The advantage of this arrangement of the present scheme is that by determining the first lightning strike probability parameter of each cable position based on the absolute height information, relative height information and distance information from the lightning protection device of each cable position, the impact of the high-altitude installation environment on the lightning strike probability of each cable position can be accurately evaluated, thereby improving the scientificity and accuracy of the determined lightning strike probability.

[0101] In the present technical solution, optionally, the operating parameters include operating voltage parameters, and the physical parameters include insulating layer material parameters and insulating layer thickness parameters;

[0102] Accordingly, the second probability determination unit is specifically configured to:

[0103] Determine the lightning protection level of the cable according to the insulation material parameters and insulation thickness parameters;

[0104] The second lightning strike probability parameter at each position of the cable is determined according to the lightning resistance level and the operating voltage parameter.

[0105] The insulation layer can be an important component of the cable to isolate the core from the external environment, prevent current leakage and provide protection. The insulation layer material parameter can refer to the type of material constituting the insulation layer, which can include polyethylene, polyvinyl chloride, rubber and polypropylene, etc.; the insulation layer thickness parameter can refer to the difference between the outer diameter and the inner diameter of the cross section of the insulation layer perpendicular to the extension direction of the cable.

[0106] The lightning resistance level of a cable may refer to the performance of the cable in resisting perforation and breakdown when a lightning strike occurs. The higher the lightning resistance level, the better the performance in resisting perforation and breakdown. The lightning resistance level of a cable may be determined by determining a first lightning resistance level according to the insulation layer material parameters and a pre-set relationship between the insulation layer material and the lightning resistance level, determining a second lightning resistance level according to the insulation layer thickness parameters and a pre-set relationship between the insulation layer thickness and the lightning resistance level, and selecting the lower of the first lightning resistance level and the second lightning resistance level as the lightning resistance level of the cable.

[0107] Specifically, the pre-set correlation between the insulating layer material and the lightning resistance level can be that the lightning resistance level of cross-linked polyethylene is level four, the lightning resistance level of polyethylene is level three, the lightning resistance level of rubber is level two, and the lightning resistance level of polypropylene is level one; the pre-set correlation between the insulating layer thickness and the lightning resistance level can be that the lightning resistance level of greater than 8 mm is level four, the lightning resistance level of 6 mm to 8 mm is level three, the lightning resistance level of 4 mm to 6 mm is level two, and the lightning resistance level of less than 4 mm is level one.

[0108] The operating voltage parameter may refer to the rated voltage value of the cable under normal working conditions. The method of determining the second lightning strike probability parameter at each position of the cable according to the lightning resistance level and the operating voltage parameter may be to determine the lightning strike probability range corresponding to the operating voltage parameter according to the correlation relationship between the operating voltage parameter and the pre-set operating voltage and lightning strike probability range, and determine the second lightning strike probability parameter according to the lightning strike probability range and the lightning resistance level.

[0109] Specifically, the pre-set correlation between the operating voltage and the lightning strike probability range can be: when the operating voltage is greater than or equal to 110 kV, the lightning strike probability range is 1%-10%; when the operating voltage is 10 kV to 35 kV, the lightning strike probability range is 0.5%-5%; when the operating voltage is less than 1 kV, the lightning strike probability range is 0.1%-3%. The second lightning strike probability parameter can be determined according to the lightning strike probability range and the lightning resistance level. The second lightning strike probability parameter can be obtained by dividing the lightning strike probability range by the total number of levels and then multiplying it by the lightning resistance level, and then adding the multiplication result and the lower limit of the lightning strike probability range.

[0110] Here is a sample code to determine the second lightning strike probability parameter:

[0111]

[0112]

[0113]

[0114] Example usage:

[0115] # Cross-linked polyethylene insulation, insulation thickness 10 mm, operating voltage 220 kV

[0116] probability=calculate_lightning_strike_probability('XLPE',10,220)

[0117] print(f"The probability of the cable being struck by lightning is: {probability:.2%}")

[0118] #Polyethylene insulation, insulation thickness 5 mm, operating voltage 10 kV

[0119] probability=calculate_lightning_strike_probability('PE',5,10)

[0120] print(f"The probability of the cable being struck by lightning is: {probability:.2%}")

[0121] The benefit of this arrangement of the present scheme is that by determining the lightning resistance level of the cable according to the insulation layer material parameters and the insulation layer thickness parameters, and determining the second lightning strike probability parameters at each position of the cable according to the lightning resistance level and the operating voltage parameters, the influence of the physical properties and operating conditions of the cable on the lightning strike probability at each position of the cable can be accurately evaluated, thereby improving the scientificity and accuracy of the determined lightning strike probability.

[0122] The lightning strike probability at each position of the cable may be determined by multiplying the first lightning strike probability parameter at each position of the cable by the second lightning strike probability parameter to obtain the lightning strike probability at each position of the cable.

[0123] The advantage of this arrangement of the present scheme is that by determining the first lightning strike probability parameter at each position of the cable according to the environmental model, determining the second lightning strike probability parameter at each position of the cable according to the working parameters and physical parameters of the cable, and finally determining the lightning strike probability at each position of the cable according to the first lightning strike probability parameter and the second lightning strike probability parameter, the lightning strike probability at each position of the cable can be scientifically calculated and determined for different geographical environments and cable characteristics.

[0124] Embodiment 4

[0125] Figure 4 1 is a flow chart of a method for predicting lightning strikes on overhead cables provided in Example 4 of the present application. Figure 4 As shown, the specific steps include:

[0126] S401, obtaining an environmental model of the high-altitude installation environment of the cable through an environmental model construction module;

[0127] S402, obtaining working parameters and physical parameters of the cable through a cable parameter obtaining module;

[0128] S403, determining the lightning strike probability of each position of the cable according to the environmental model, the working parameters and the physical parameters through a probability analysis module;

[0129] S404: Determine the predicted occurrence location of the lightning strike event according to the lightning strike occurrence area and the lightning strike probability at each position of the cable through a lightning strike event monitoring module.

[0130] In an embodiment of the present application, an environmental model of the high-altitude installation environment of the cable is obtained through an environmental model construction module; the working parameters and physical parameters of the cable are obtained through a cable parameter acquisition module; the probability of lightning strikes at various locations of the cable are determined according to the environmental model, the working parameters and the physical parameters through a probability analysis module; and the predicted location of the lightning strike event is determined according to the lightning strike occurrence area and the lightning strike probability at various locations of the cable through a lightning strike event monitoring module. The above-mentioned lightning strike prediction method for high-altitude cables can achieve accurate prediction of cable locations where lightning strikes may occur by determining the lightning strike probability at various locations of the cable according to the environmental model of the high-altitude installation environment of the cable and the working parameters and physical parameters of the cable, thereby achieving rapid response and processing of cable lightning strike accidents.

[0131] The lightning strike prediction method for high-altitude cables provided in the embodiment of the present application corresponds to the lightning strike prediction device for high-altitude cables provided in the above-mentioned embodiment, and has the same functional modules and beneficial effects. To avoid repetition, they will not be described here.

[0132] Embodiment 5

[0133] like Figure 5 As shown, an embodiment of the present application also provides an electronic device 500, including a processor 501, a memory 502, and a program or instruction stored in the memory 502 and executable on the processor 501. When the program or instruction is executed by the processor 501, each process of the above-mentioned lightning strike prediction device embodiment for high-altitude cable installation is implemented, and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

[0134] It should be noted that the electronic devices in the embodiments of the present application include the mobile electronic devices and non-mobile electronic devices mentioned above.

[0135] Embodiment 6

[0136] An embodiment of the present application also provides a readable storage medium, on which a program or instruction is stored. When the program or instruction is executed by a processor, each process of the above-mentioned lightning strike prediction device embodiment for high-altitude cable installation is implemented, and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

[0137] The processor is a processor in the electronic device described in the above embodiment. The readable storage medium includes a computer readable storage medium, such as a computer read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0138] Embodiment 7

[0139] An embodiment of the present application further provides a chip, which includes a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the various processes of the above-mentioned embodiment of the lightning strike prediction device for high-altitude cables, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0140] It should be understood that the chip mentioned in the embodiments of the present application can also be called a system-level chip, a system chip, a chip system or a system-on-chip chip, etc.

[0141] It should be noted that, in this article, the terms "comprise", "include" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise one..." do not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0142] 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 application, or the part that contributes to the prior art, can be embodied in the form of a computer software product, which is stored in a storage medium (such as ROM / RAM, a disk, or an optical disk), and includes a number of instructions for a terminal (which can be a mobile phone, a computer, a server, or a network device, etc.) to execute the methods described in each embodiment of the present application.

[0143] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

[0144] The above are only preferred embodiments of the present application and the technical principles used. The present application is not limited to the specific embodiments described herein, and various obvious changes, readjustments and substitutions that can be made by those skilled in the art will not deviate from the scope of protection of the present application. Therefore, although the present application is described in more detail through the above embodiments, the present application is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present application, and the scope of the present application is determined by the scope of the claims.

Claims

1. A lightning strike prediction device for high-altitude cable installation, characterized in that: The device comprises: An environmental model building module is used to obtain an environmental model of the high-altitude installation environment of the cable; The cable parameter acquisition module is used to obtain the working parameters and physical parameters of the cable; A probability analysis module, used to determine the probability of lightning strike at each position of the cable according to the environmental model, the operating parameters and the physical parameters; The lightning strike event monitoring module is used to determine the predicted occurrence location of the lightning strike event according to the lightning strike occurrence area and the lightning strike probability at each position of the cable.

2. The lightning strike prediction device for high-altitude cable installation according to claim 1, characterized in that: The environment model building module includes: A cable position acquisition unit, used to acquire position information of each position of the cable; A terrain data acquisition unit, used to obtain terrain data of the high-altitude installation environment of the cable; The environment model building unit is used to build an environment model of the high-altitude installation environment of the cable according to the location information and the terrain data.

3. The lightning strike prediction device for high-altitude cable installation according to claim 2, characterized in that: The cable position acquisition unit is specifically used for: Obtain cable topology information and tower layout information; The location information of each cable position is determined according to the topological structure information and the tower layout information.

4. The lightning strike prediction device for high-altitude cable installation according to claim 1, characterized in that: The probability analysis module comprises: A first probability determination unit, configured to determine a first lightning strike probability parameter at each position of the cable according to the environmental model; A second probability determination unit, configured to determine a second lightning strike probability parameter at each position of the cable according to the working parameter and the physical parameter; A lightning strike probability determination unit is used to determine the lightning strike probability at each position of the cable according to the first lightning strike probability parameter and the second lightning strike probability parameter.

5. The lightning strike prediction device for high-altitude cable installation according to claim 4, characterized in that: The first probability determination unit is specifically configured to: Determine the absolute height information, relative height information and distance information from the lightning protection device at each position of the cable according to the environmental model; A first lightning strike probability parameter at each position of the cable is determined according to the absolute height information, the relative height information, and the distance information.

6. The lightning strike prediction device for high-altitude cables according to claim 4, characterized in that: The operating parameters include operating voltage parameters, and the physical parameters include insulating layer material parameters and insulating layer thickness parameters; Accordingly, the second probability determination unit is specifically configured to: Determine the lightning protection level of the cable according to the insulation material parameters and insulation thickness parameters; The second lightning strike probability parameter at each position of the cable is determined according to the lightning resistance level and the operating voltage parameter.

7. The lightning strike prediction device for high-altitude cables according to claim 1, characterized in that: The lightning strike event monitoring module is specifically used for: Determine the lightning frequency in the lightning strike area and the location information of the cables in the lightning strike area; The predicted occurrence location of the lightning strike event is determined according to the lightning occurrence frequency and the lightning strike probability of the cable position information.

8. A method for predicting lightning strikes on overhead cables, characterized in that: The method comprises: Obtain the environmental model of the high-altitude installation environment of the cable through the environmental model building module; The working parameters and physical parameters of the cable are obtained through the cable parameter acquisition module; Determine the lightning strike probability of each position of the cable according to the environmental model, the working parameters and the physical parameters through a probability analysis module; The predicted occurrence location of the lightning strike event is determined by the lightning strike event monitoring module according to the lightning strike occurrence area and the lightning strike probability at each position of the cable.

9. The method for predicting lightning strikes of overhead cables according to claim 8, characterized in that: The environmental model of the high-altitude installation environment of the cable is obtained through the environmental model building module, including: Acquire the position information of each position of the cable through the cable position acquisition unit; Acquire the terrain data of the high-altitude installation environment of the cable through the terrain data acquisition unit; An environmental model building unit builds an environmental model of the high-altitude installation environment of the cable according to the location information and the terrain data.

10. An electronic device, characterized in that: The method comprises a processor, a memory and a program or instruction stored in the memory and executable on the processor, wherein the program or instruction, when executed by the processor, implements the steps of the method for predicting lightning strikes for overhead cables as described in any one of claims 8 to 9.

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