Substation engineering project planning method based on grounding lightning protection analysis

Abstract

The invention relates to a transformer substation engineering project planning method based on grounding lightning protection analysis, and belongs to the technical field of transformer substation engineering project planning. A transformer substation engineering project simulation model is constructed based on digital twinning, and induced overvoltage data of transformer substation engineering project equipment during lightning stroke are analyzed; and finally, adjusting the design scheme of the substation engineering project equipment according to the induced overvoltage data of the substation engineering project equipment, and generating a substation engineering project planning scheme based on the design scheme of the substation engineering project equipment and the substation engineering project planning drawing. According to the method, the substation engineering project planning scheme is optimized by fully considering local meteorological data, topographic features, ground lightning data and lightning current data in the target area, the remarkable influence of local topography and micrometeorology on lightning activities and the influence of lightning on equipment operation can be fully considered, and the method can be used for optimizing the substation engineering project planning scheme. And the planning rationality of substation engineering project planning is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of substation engineering project planning, and particularly relates to a substation engineering project planning method based on grounding lightning protection analysis. BACKGROUND

[0002] Substation engineering planning is an important part of power system construction, involving multiple aspects, including market demand analysis, power system access scheme, quality control and acceptance scheme, engineering construction management scheme, etc. In the early stage of planning, detailed analysis of the demand of the electricity market is needed. This includes the assessment of the current power consumption status, future growth trend and load forecasting in the region. Through these analyses, the construction scale and capacity of the substation can be determined to meet the current and future power demand. Environmental risk assessment is an important part of substation engineering planning that cannot be ignored. The impact of substation construction on the surrounding environment, including electromagnetic radiation, noise pollution, land use, etc. needs to be assessed. Through these assessments, appropriate measures can be taken to reduce the negative impact on the environment. Traditional substation site selection and layout mainly consider load centers, line corridors, geology, transportation, etc. The assessment of lightning risk is often based on large-area thunderstorm days or lightning density maps, which lack precision and cannot reflect the significant impact of local terrain (such as ridges, valleys, water body edges) and microclimate (such as local strong convective trigger points) on lightning activity, resulting in substation site selection or equipment arrangement in lightning "hot spot" areas. SUMMARY

[0003] The present application overcomes the shortcomings of the prior art and provides a substation engineering project planning method based on grounding lightning protection analysis.

[0004] To achieve the above purpose, the technical solution adopted by the present application is as follows: The present application provides a substation engineering project planning method based on grounding lightning protection analysis, comprising the following steps: Obtain high-resolution digital elevation model and spatiotemporal resolution local meteorological data of the target area, and construct a grid lightning risk probability distribution map; Initialize the planning address of the substation engineering project according to the grid lightning risk probability distribution map, and generate a substation engineering project planning drawing; Construct a substation engineering project simulation model based on digital twinning, and analyze the induced overvoltage data of the substation engineering project equipment when lightning strikes; Adjust the substation engineering project equipment design scheme according to the induced overvoltage data of the substation engineering project equipment, and generate a substation engineering project planning scheme based on the substation engineering project equipment design scheme and the substation engineering project planning drawing.

[0005] Further, in the substation engineering project planning method based on grounding lightning protection analysis, a high-resolution digital elevation model of the target area and local meteorological data with time and space resolution are obtained, and a grid lightning risk probability distribution map is constructed, specifically: Obtain the geographical location information of the target area, and obtain the high-resolution digital elevation model of the current geographical location according to the geographical location information of the target area, and obtain the terrain undulation, slope, slope direction, and protruding feature data through the high-resolution digital elevation model; Access high-time and space resolution local weather forecast data, and obtain strong convective parameters according to the high-time and space resolution local weather forecast data, and collect the ground lightning positioning data of the target area; Based on machine learning, a terrain-meteorological factor-ground lightning probability prediction model is constructed, and a topological structure diagram is constructed based on the relationship between strong explicit strong convective parameters, terrain undulation, slope, slope direction, protruding feature data and ground lightning positioning data of the target area. Learn the terrain-meteorological factor-ground lightning probability prediction model using the topological structure diagram, predict the dynamic lightning risk probability of each sub-region in the target area through the terrain-meteorological factor-ground lightning probability prediction model, and construct a grid lightning risk probability distribution map.

[0006] Further, in the substation engineering project planning method based on grounding lightning protection analysis, the planning address of the substation engineering project is initialized according to the grid lightning risk probability distribution map, and a substation engineering project planning drawing is generated, specifically: Set a risk probability threshold, and determine whether the lightning risk probability value of each region in the grid lightning risk probability distribution map is greater than the risk probability threshold; When the lightning risk probability value is greater than the risk probability threshold, the region where the lightning risk probability value is greater than the risk probability threshold is regarded as a dangerous region; When the lightning risk probability value is greater than the risk probability threshold, the region where the lightning risk probability value is not greater than the risk probability threshold is regarded as a candidate region, and the planning address of the substation engineering project is generated according to the candidate region; Based on the planning address of the substation engineering project, a substation engineering project planning drawing is constructed, and the substation engineering project planning drawing is output.

[0007] Further, in the substation engineering project planning method based on grounding lightning protection analysis, a substation engineering project planning drawing is constructed based on the planning address of the substation engineering project, specifically including: Obtain the geographical location information of the planning address of the substation engineering project, and collect the historical event types occurring at the geographical location information of the planning address of the substation engineering project. constructing a geological disaster event keyword data, and calculating a Mahalanobis distance value between a historical event type occurring at a geographic location information of a planning address of the substation engineering project and the geological disaster event keyword data; setting a Mahalanobis distance threshold, judging whether the Mahalanobis distance value is greater than the Mahalanobis distance threshold, and deleting the planning address of the substation engineering project corresponding to the Mahalanobis distance value greater than the Mahalanobis distance threshold; maintaining the planning address of the substation engineering project corresponding to the Mahalanobis distance value not greater than the Mahalanobis distance threshold, and constructing a substation engineering project planning drawing.

[0008] Further, in the substation engineering project planning method based on grounding lightning protection analysis, a substation engineering project simulation model is constructed based on digital twinning, and when lightning strikes, the induced overvoltage data of the substation engineering project equipment is analyzed, which specifically includes: initializing the device type of the substation engineering project, obtaining the working parameter information and three-dimensional size information of the device type of the current substation engineering project, and constructing a detailed three-dimensional device model based on the three-dimensional size information; collecting connection information between devices, and constructing a substation electromagnetic transient model based on the detailed three-dimensional device model and the connection information between devices; based on the working parameter information of the device type of the current substation engineering project, simulating the working state of the substation electromagnetic transient model through digital twinning technology, and obtaining the running state of the substation electromagnetic transient model; setting different lightning parameter characteristics, and simulating the current distribution of lightning current in the grounding grid and the spatial electromagnetic field distribution under different lightning points according to the different lightning parameter characteristics, and analyzing the induced overvoltage data of each device port when lightning strikes.

[0009] Further, in the substation engineering project planning method based on grounding lightning protection analysis, the substation engineering project equipment design scheme is adjusted according to the induced overvoltage data of the substation engineering project equipment, which specifically includes: introducing a genetic algorithm, setting the number of generations based on the genetic algorithm, and setting a maximum allowable induced overvoltage threshold, taking the maximum allowable induced overvoltage threshold as target data, and judging whether the induced overvoltage data of the substation engineering project equipment is greater than the target data; When the induced overvoltage data of the substation engineering project equipment is greater than the target data, under the condition of meeting the electrical connection and physical space constraints, genetic is carried out based on the number of generations, the physical coordinates and orientation of the equipment are automatically adjusted, the substation engineering project equipment is arranged in the region where the induced overvoltage data is not greater than the target data, and a substation engineering project equipment design scheme is generated. When the induced overvoltage data of the substation engineering project equipment is not greater than the target data, a substation engineering project equipment design scheme is generated according to the physical coordinates and the orientation of the current equipment.

[0010] Further, in the substation engineering project planning method based on grounding lightning protection analysis, a substation engineering project planning scheme is generated based on the substation engineering project equipment design scheme and the substation engineering project planning drawing, specifically: The substation engineering project equipment design scheme is counted, and whether the substation engineering project equipment design scheme has installation conflicts is detected; When the substation engineering project equipment design scheme has installation conflicts, the substation engineering project equipment design scheme is re-planned; When the substation engineering project equipment design scheme does not have installation conflicts, a substation engineering project planning scheme is generated according to the substation engineering project equipment design scheme and the substation engineering project planning drawing.

[0011] The second aspect of the present application provides a substation engineering project planning system based on grounding lightning protection analysis, comprising a memory and a processor, the memory comprising a substation engineering project planning method based on grounding lightning protection analysis program, the substation engineering project planning method based on grounding lightning protection analysis program being executed by the processor to realize the steps of any one of the substation engineering project planning methods based on grounding lightning protection analysis.

[0012] The third aspect of the present application provides a substation engineering project planning device based on grounding lightning protection analysis, comprising: A gridded lightning risk probability distribution map construction module is configured to obtain high-resolution digital elevation models of a target area and local meteorological data with spatial and temporal resolution, and construct a gridded lightning risk probability distribution map; A substation engineering project planning drawing design module is configured to initialize a planning address of a substation engineering project according to the gridded lightning risk probability distribution map, and generate a substation engineering project planning drawing; An induced overvoltage data analysis module is configured to construct a substation engineering project simulation model based on digital twinning, and analyze induced overvoltage data of substation engineering project equipment when lightning strikes; A substation engineering project planning scheme generation module is configured to adjust a substation engineering project equipment design scheme according to the induced overvoltage data of the substation engineering project equipment, and generate a substation engineering project planning scheme based on the substation engineering project equipment design scheme and the substation engineering project planning drawing.

[0013] The fourth aspect of the present application provides a computer-readable storage medium comprising a substation engineering project planning method program based on grounding lightning protection analysis, which, when executed by the processor, implements the steps of any of the substation engineering project planning methods based on grounding lightning protection analysis.

[0014] The present application solves the defects in the background art and has the following advantages: The present application obtains high-resolution digital elevation model of the target area and local meteorological data of space-time resolution, constructs a grid lightning risk probability distribution map, initializes the planning address of the substation engineering project according to the grid lightning risk probability distribution map, and generates substation engineering project planning drawings, thereby constructing a substation engineering project simulation model based on digital twinning, analyzing the induced overvoltage data of the substation engineering project equipment when lightning strikes, and finally adjusting the substation engineering project equipment design scheme according to the induced overvoltage data of the substation engineering project equipment, generating a substation engineering project planning scheme based on the substation engineering project equipment design scheme and the substation engineering project planning drawings. The present application optimizes the substation engineering project planning scheme by fully considering the local meteorological data, topographic features, cloud-to-ground lightning data, and lightning current data in the target area, which can fully consider the significant influence of local topography (such as ridges, valleys, and water body edges) and microclimate (such as local strong convective trigger points) on lightning activity, and improve the planning rationality of the substation engineering project planning. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can obtain other drawings of other embodiments according to these drawings without creative labor.

[0016] Figure 1 The overall flowchart of the substation engineering project planning method based on grounding lightning protection analysis is shown; Figure 2 The system block diagram of the substation engineering project planning system based on grounding lightning protection analysis is shown; Figure 3 The device diagram of the substation engineering project planning device based on grounding lightning protection analysis is shown. DETAILED DESCRIPTION

[0017] In order to enable the above-mentioned objects, features and advantages of the present application to be more clearly understood, the following further describes the present application with reference to the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0018] In the following description, many specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be practiced in other manners different from those described herein, and the scope of the present application is not limited to the specific embodiments disclosed below.

[0019] As shown in Figure 1 The first aspect of the present application provides a substation engineering project planning method based on grounding lightning protection analysis, comprising the following steps: S102: Obtain high-resolution digital elevation model of the target area and local meteorological data with spatial and temporal resolution, and construct a grid lightning risk probability distribution map; S104: Initialize the planning address of the substation engineering project according to the grid lightning risk probability distribution map, and generate a substation engineering project planning drawing; S106: Construct a substation engineering project simulation model based on digital twinning, and analyze the induced overvoltage data of the substation engineering project equipment when lightning strikes; S108: Adjust the substation engineering project equipment design scheme according to the induced overvoltage data of the substation engineering project equipment, and generate a substation engineering project planning scheme based on the substation engineering project equipment design scheme and the substation engineering project planning drawing.

[0020] It should be noted that the present application optimizes the substation engineering project planning scheme by fully considering the local meteorological data, topographic features, ground flash data and lightning current data in the target area, which can fully consider the significant influence of local topography (such as ridges, valleys and water body edges) and microclimate (such as local strong convective trigger points) on lightning activity, and improve the planning rationality of the substation engineering project planning.

[0021] Further, in the substation engineering project planning method based on grounding lightning protection analysis, the high-resolution digital elevation model of the target area and the local meteorological data with spatial and temporal resolution are obtained, and a grid lightning risk probability distribution map is constructed, specifically: Obtain the geographic location information (including longitude, latitude and altitude) of the target area, and obtain the high-resolution digital elevation model of the current geographic location according to the geographic location information of the target area, and obtain the terrain undulation, slope, slope direction and salient feature data through the high-resolution digital elevation model; It is to be noted that the Digital Elevation Model, abbreviated as DEM. It is a kind of entity ground model that represents the ground elevation in the form of an ordered numerical array. It is a branch of Digital Terrain Model (DTM), and other various terrain feature values can be derived from it. Generally speaking, DTM is a spatial distribution of linear and nonlinear combinations of various geomorphic factors including elevation, slope, slope direction, slope change rate, etc. Among them, DEM is a zero-order simple single digital geomorphic model, and other geomorphic characteristics such as slope, slope direction and slope change rate can be derived based on DEM.

[0022] Access high spatiotemporal resolution local weather forecast data (including weather type, meteorological factor, etc.), and obtain strong convective parameters according to the high spatiotemporal resolution local weather forecast data, and collect the ground lightning positioning data of the target area; It is to be noted that the accurate acquisition of ground lightning positioning data depends on the capture of lightning electromagnetic signals by the lightning positioning system and the collaborative analysis of multiple sites. During the lightning discharge process, electromagnetic pulses covering the very low frequency (VLF, 3-30 kHz) and low frequency (LF, 30-300 kHz) bands are released, and these signals can propagate hundreds to thousands of kilometers. The locator captures the arrival time, intensity and waveform characteristics of the pulse through the electromagnetic signal receiver. Among them, ground lightning involves the release of electric charge to the ground, and the signal is stronger and contains a sharp "back strike" waveform peak, including lightning strike times, lightning strike current and other data.

[0023] Based on machine learning, a terrain-meteorological factor-ground lightning probability prediction model is constructed, and a topological structure diagram is constructed based on the relationship between strong explicit strong convective parameters, terrain undulation, slope, slope direction, and protruding feature data (such as the shape and size of stones, height size, etc.) and the ground lightning positioning data of the target area. The topological structure diagram is used to learn the terrain-meteorological factor-ground lightning probability prediction model, and the terrain-meteorological factor-ground lightning probability prediction model is used to predict the dynamic lightning risk probability of each sub-region in the target area, and a grid lightning risk probability distribution map is constructed.

[0024] Machine learning techniques include random forests and deep learning CNNs. The topological structure diagram is learned by random forests and deep learning CNNs, and the dynamic lightning risk probability of each sub-region in the target area is statistically analyzed to form a grid lightning risk probability distribution map.

[0025] Further, in the substation engineering project planning method based on grounding lightning protection analysis, the planning address of the substation engineering project is initialized according to the grid lightning risk probability distribution map, and a substation engineering project planning drawing is generated. Specifically: a risk probability threshold is set, and it is determined whether the lightning risk probability value of each region in the grid lightning risk probability distribution map is greater than the risk probability threshold; When the lightning risk probability value is greater than the risk probability threshold, the region where the lightning risk probability value is greater than the risk probability threshold is regarded as a dangerous region; When the lightning risk probability value is greater than the risk probability threshold, the region where the lightning risk probability value is not greater than the risk probability threshold is regarded as a candidate region, and the planning address of the substation engineering project is generated according to the candidate region; The substation engineering project planning drawing is constructed based on the planning address of the substation engineering project, and the substation engineering project planning drawing is output.

[0026] It should be noted that the planning address of the power station engineering project can be selected by the method, and the rationality of the layout is improved.

[0027] Further, in the substation engineering project planning method based on grounding lightning protection analysis, the substation engineering project planning drawing is constructed based on the planning address of the substation engineering project, specifically including: The geographical position information of the planning address of the substation engineering project is obtained, and the historical event type occurring at the geographical position information of the planning address of the substation engineering project is collected; The geological disaster event keyword data is constructed, and the Mahalanobis distance value between the historical event type occurring at the geographical position information of the planning address of the substation engineering project and the geological disaster event keyword data is calculated; A Mahalanobis distance threshold is set, and it is determined whether the Mahalanobis distance value is greater than the Mahalanobis distance threshold, and the planning address of the substation engineering project corresponding to the Mahalanobis distance value greater than the Mahalanobis distance threshold is deleted; The planning address of the substation engineering project corresponding to the Mahalanobis distance value not greater than the Mahalanobis distance threshold is maintained, and the substation engineering project planning drawing is constructed.

[0028] It should be noted that the present application fully considers the region prone to geological disasters, thereby further optimizing the planning address of the power station engineering project and improving the rationality of the layout.

[0029] Further, in the substation engineering project planning method based on grounding lightning protection analysis, the substation engineering project simulation model is constructed based on digital twinning, and the induced overvoltage data of the substation engineering project equipment when lightning strikes is analyzed, specifically including: The device type of the substation engineering project is initialized, the working parameter information and three-dimensional size information of the current device type of the substation engineering project are obtained, and a detailed three-dimensional device model is constructed based on the three-dimensional size information; Collect connection information between devices, and construct an electromagnetic transient model of the substation based on detailed three-dimensional device models and connection information (wire connection diagram, conductor connection diagram) between devices; Simulate the working state of the electromagnetic transient model of the substation based on the working parameter information (such as operating power, operating voltage, and operating current) of the device type of the current substation engineering project through digital twinning technology, and obtain the running state of the electromagnetic transient model of the substation; Set different lightning parameter characteristics (such as lightning current data), and simulate the distribution of lightning current in the grounding grid and the distribution of spatial electromagnetic field under different lightning points (incoming line section, framework, and station) according to different lightning parameter characteristics, and analyze the induced overvoltage data of each device port (such as transformer bushing, GIS bushing, PT / CT secondary side, and protection room entrance) when lightning strikes.

[0030] It should be noted that the detailed three-dimensional device model is constructed based on the three-dimensional size information through digital twinning technology, and the running state of the electromagnetic transient model of the substation is constructed based on the running parameters, to simulate and estimate the induced overvoltage data of each device port (such as transformer bushing, GIS bushing, PT / CT secondary side, and protection room entrance), and further evaluate the damage state.

[0031] Further, in the substation engineering project planning method based on grounding lightning protection analysis, the design scheme of the substation engineering project equipment is adjusted according to the induced overvoltage data of the substation engineering project equipment, specifically: The genetic algorithm is introduced, the genetic generation is set based on the genetic algorithm, and the maximum allowed induced overvoltage threshold is set. The maximum allowed induced overvoltage threshold is used as target data to determine whether the induced overvoltage data of the substation engineering project equipment is greater than the target data; When the induced overvoltage data of the substation engineering project equipment is greater than the target data, the genetic algorithm is used to automatically adjust the physical coordinates and orientation of the equipment based on the genetic generation under the condition of meeting the electrical connection and physical space constraints, and the substation engineering project equipment (especially the secondary equipment susceptible to interference and the equipment connected by long cables) is arranged in the region where the induced overvoltage data is not greater than the target data, to generate a design scheme of the substation engineering project equipment; When the induced overvoltage data of the substation engineering project equipment is not greater than the target data, a design scheme of the substation engineering project equipment is generated according to the current physical coordinates and orientation of the equipment.

[0032] It should be noted that this method can fully consider that the induced overvoltage data of the substation engineering project equipment is greater than the target data, so as to optimize the physical coordinates and orientation of the equipment, avoid flashover hazards, or optimize the arrangement of the substation engineering project equipment under lightning current, and improve the rationality of the design scheme of the substation engineering project equipment.

[0033] Further, in the substation engineering project planning method based on the grounding lightning protection analysis, the substation engineering project planning scheme is generated based on the substation engineering project equipment design scheme and the substation engineering project planning drawing, specifically: The substation engineering project equipment design scheme is counted, and it is detected whether the substation engineering project equipment design scheme has installation conflicts; When the substation engineering project equipment design scheme has installation conflicts (such as overlapping of the arrangement positions of the equipment), the substation engineering project equipment design scheme is re-planned; When the substation engineering project equipment design scheme does not have installation conflicts, the substation engineering project planning scheme is generated according to the substation engineering project equipment design scheme and the substation engineering project planning drawing.

[0034] It should be noted that the substation engineering project planning scheme can be further optimized by the method.

[0035] In addition, the method further includes: The laying path and density data of the grounding equipment are initialized, and the current current discharge data (such as the current discharge amount per unit time, such as 1000A) under the current density data is obtained, and the current discharge data feature threshold is set; The laying path and density data of the grounding equipment are taken as optimization variables, and the optimization variables are input into the genetic algorithm for genetic, and it is judged whether the current current discharge data under the current density data is greater than the current discharge data feature threshold; When the current current discharge data under the current density data is greater than the current discharge data feature threshold, the optimization variables are optimized, the laying path and density data of the grounding equipment are adjusted, until it is not greater than the current discharge data feature threshold; When the current current discharge data under the current density data is not greater than the current discharge data feature threshold, the current optimization variable is output, and the grounding optimization of the grounding equipment is performed according to the current optimization variable.

[0036] It should be noted that when the current current discharge data under the current density data is greater than the current discharge data feature threshold, the optimization variables are optimized, so as to protect the overall substation equipment and improve the planning rationality of the substation engineering project planning scheme.

[0037] In addition, the method further includes: The lightning damage probability of the equipment in the lightning process is counted, the damage cost and the power loss cost of each damaged equipment are obtained, and the total lightning loss cost is calculated according to the lightning damage probability of the equipment in the lightning process, the damage cost of each damaged equipment and the power loss cost; An initial investment cost, an operation and maintenance cost, and an annual lightning total loss cost are acquired, and a target cost data is constructed according to the initial investment cost, the operation and maintenance cost, and the lightning total loss cost; The main wiring scheme type, the installation position and quantity of the lightning arrester, and the insulation level of the equipment are taken as the combined optimization variables, the particle swarm algorithm is introduced, and the combined optimization vector is input into the particle swarm algorithm; The total cost data of the current combined optimization variable is calculated, and the combined optimization variable is adjusted and optimized when the total cost data of the current combined optimization variable is greater than the target cost data.

[0038] It should be noted that the calculation method of the lightning total loss cost is: lightning total loss cost = Σ (lightning damage probability * damage cost) + outage loss expectation value, and by the method, a slightly expensive main wiring (such as one more sectionalizer) can be used to cooperate with the optimized arrangement of the lightning arrester under a certain specific site risk, which is more economical than the traditional main wiring + more lightning arresters, and reduces the main transformer damage probability and outage loss.

[0039] As shown in Figure 2 The second aspect of the present application provides a substation engineering project planning system 4 based on grounding lightning protection analysis, which comprises a memory 41 and a processor 42, and the memory 41 comprises a substation engineering project planning method program based on grounding lightning protection analysis, and the steps of any one of the substation engineering project planning methods based on grounding lightning protection analysis are realized when the substation engineering project planning method program based on grounding lightning protection analysis is executed by the processor 42.

[0040] As shown in Figure 3 The third aspect of the present application provides a substation engineering project planning device based on grounding lightning protection analysis, which comprises: A gridded lightning risk probability distribution map construction module 10 is configured to acquire high-resolution digital elevation models of a target area and local meteorological data with time and space resolution, and construct a gridded lightning risk probability distribution map; A substation engineering project planning drawing design module 20 is configured to initialize a planning address of a substation engineering project according to the gridded lightning risk probability distribution map, and generate a substation engineering project planning drawing; An induced overvoltage data analysis module 30 is configured to construct a substation engineering project simulation model based on digital twinning, and analyze induced overvoltage data of equipment of the substation engineering project when lightning strikes; A substation engineering project planning scheme generation module 40 is configured to adjust a substation engineering project equipment design scheme according to the induced overvoltage data of the equipment of the substation engineering project, and generate a substation engineering project planning scheme based on the substation engineering project equipment design scheme and the substation engineering project planning drawing.

[0041] The fourth aspect of the present application provides a computer readable storage medium comprising a substation engineering project planning method program based on lightning protection analysis of grounding, the substation engineering project planning method program based on lightning protection analysis of grounding, when executed by a processor, implements the steps of any one of the substation engineering project planning methods based on lightning protection analysis of grounding.

[0042] In several embodiments provided in the present application, it should be understood that the disclosed devices and methods can be implemented in other manners. The above described device embodiments are merely schematic. For example, the division of the units is only a logical function division. There can be another division manner for the actual implementation, for example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the displayed or discussed coupling, or direct coupling or communication connection between the components can be indirect coupling or communication connection through some interfaces, devices or units, and can be electrical, mechanical or in other forms.

[0043] The units described as separate components can or can not be physically separate, and the components displayed as units can or can not be physical units; they can be located in one place, or distributed on multiple network units; and part or all of the units can be selected according to actual needs to achieve the purpose of the embodiment.

[0044] In addition, each functional unit in each embodiment of the present application can be integrated into one processing unit, or each unit can be a separate unit, or two or more units can be integrated into one unit; the integrated unit can be realized in the form of hardware, or in the form of hardware plus software functional units.

[0045] Those skilled in the art can understand that all or part of the steps of the above method embodiments can be completed by program instruction related hardware, and the foregoing program can be stored in a computer readable storage medium, and the program, when executed, executes steps including the above method embodiments; and the foregoing storage medium includes mobile storage devices, read-only memories (ROMs), random access memories (RAMs), magnetic disks or optical disks, and various media that can store program codes.

[0046] Alternatively, the above-mentioned integrated unit of the present application, if realized in the form of a software function module and sold or used as an independent product, can also be stored in a computer-readable storage medium. Based on such an understanding, the technical solutions of the embodiments of the present application can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions to make a computer device (which can be a personal computer, a server, or a network device, etc.) execute all or part of the embodiments of the present application. The aforementioned storage medium includes: mobile storage devices, ROM, RAM, magnetic disks or optical disks, and various media that can store program codes.

[0047] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto, any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A substation engineering project planning method based on lightning protection analysis grounded, characterized by, The method comprises the following steps: obtaining high-resolution digital elevation model of target area and local meteorological data with space-time resolution, and constructing a grid lightning risk probability distribution map; initializing the planning address of the substation engineering project according to the grid lightning risk probability distribution map, and generating a substation engineering project planning drawing; constructing a substation engineering project simulation model based on digital twinning, and analyzing the induced overvoltage data of the substation engineering project equipment when lightning strikes; adjusting the substation engineering project equipment design scheme according to the induced overvoltage data of the substation engineering project equipment, and generating a substation engineering project planning scheme based on the substation engineering project equipment design scheme and the substation engineering project planning drawing; adjusting the substation engineering project equipment design scheme according to the induced overvoltage data of the substation engineering project equipment, specifically: introducing a genetic algorithm, setting the number of generations based on the genetic algorithm, and setting a maximum allowed induced overvoltage threshold value, taking the maximum allowed induced overvoltage threshold value as target data, and determining whether the induced overvoltage data of the substation engineering project equipment is greater than the target data; when the induced overvoltage data of the substation engineering project equipment is greater than the target data, performing genetic operation based on the number of generations under the condition of meeting the electrical connection and physical space constraints, automatically adjusting the physical coordinates and orientation of the equipment, arranging the substation engineering project equipment in the region where the induced overvoltage data is not greater than the target data, and generating a substation engineering project equipment design scheme; when the induced overvoltage data of the substation engineering project equipment is not greater than the target data, generating a substation engineering project equipment design scheme according to the current physical coordinates and orientation of the equipment.

2. The substation engineering project planning method based on lightning protection analysis according to claim 1, characterized in that, obtaining high-resolution digital elevation model of target area and local meteorological data with space-time resolution, and constructing a grid lightning risk probability distribution map, specifically: obtaining geographical location information of the target area, and obtaining high-resolution digital elevation model of the current geographical location according to the geographical location information of the target area, and obtaining terrain undulation, slope, slope direction, and protruding feature data through the high-resolution digital elevation model; accessing high-time-space resolution local weather forecast data, and obtaining strong convective parameters according to the high-time-space resolution local weather forecast data, and collecting ground lightning positioning data of the target area; constructing a topography-meteorological factor-ground lightning probability prediction model based on machine learning, and constructing a topology structure diagram according to the relationship between strong explicit strong convective parameters, terrain undulation, slope, slope direction, protruding feature data, and ground lightning positioning data of the target area; learning the topography-meteorological factor-ground lightning probability prediction model using the topology structure diagram, predicting the dynamic lightning risk probability of each sub-region in the target area through the topography-meteorological factor-ground lightning probability prediction model, and constructing a grid lightning risk probability distribution map.

3. The substation engineering project planning method based on lightning protection analysis according to claim 1, characterized in that, initializing the planning address of the substation engineering project according to the grid lightning risk probability distribution map, and generating a substation engineering project planning drawing, specifically: set a risk probability threshold, and determine whether the lightning risk probability value of each region in the grid lightning risk probability distribution map is greater than the risk probability threshold; when the lightning risk probability value is greater than the risk probability threshold, the region where the lightning risk probability value is greater than the risk probability threshold is regarded as a dangerous region; when the lightning risk probability value is greater than the risk probability threshold, the region where the lightning risk probability value is not greater than the risk probability threshold is regarded as a candidate region, and the planning address of the substation engineering project is generated according to the candidate region; based on the planning address of the substation engineering project, a substation engineering project planning drawing is constructed, and the substation engineering project planning drawing is output.

4. The substation engineering project planning method based on lightning protection analysis according to claim 3, characterized in that, Based on the planning address of the substation engineering project, a substation engineering project planning drawing is constructed, and the substation engineering project planning drawing is output. Obtain the geographical location information of the planning address of the substation engineering project, and collect the historical event types occurring in the geographical location information of the planning address of the substation engineering project; construct a geological disaster event keyword data, and calculate the Mahalanobis distance value between the historical event types occurring in the geographical location information of the planning address of the substation engineering project and the geological disaster event keyword data; set a Mahalanobis distance threshold, determine whether the Mahalanobis distance value is greater than the Mahalanobis distance threshold, and delete the planning address of the substation engineering project corresponding to the Mahalanobis distance value greater than the Mahalanobis distance threshold; maintain the planning address of the substation engineering project corresponding to the Mahalanobis distance value not greater than the Mahalanobis distance threshold, and construct a substation engineering project planning drawing.

5. The substation engineering project planning method based on lightning protection analysis according to claim 1, wherein, Based on digital twinning, a substation engineering project simulation model is constructed, and the induced overvoltage data of the substation engineering project equipment when lightning is analyzed, specifically including: initialize the device type of the substation engineering project, obtain the working parameter information and three-dimensional size information of the current substation engineering project equipment type, and construct a detailed three-dimensional device model based on the three-dimensional size information; collect the connection information between devices, and construct a substation electromagnetic transient model based on the detailed three-dimensional device model and the connection information between devices; based on the working parameter information of the current substation engineering project equipment type, the working state simulation of the substation electromagnetic transient model is carried out through digital twinning technology, and the running state substation electromagnetic transient model is obtained; set different lightning parameter characteristics, and simulate the current distribution of lightning current in grounding grid and the spatial electromagnetic field distribution under different lightning points according to the different lightning parameter characteristics, and analyze the induced overvoltage data of each device port when lightning.

6. The substation engineering project planning method based on lightning protection analysis according to claim 1, wherein, Based on the substation engineering project equipment design scheme and the substation engineering project planning drawing, a substation engineering project planning scheme is generated, specifically: statistical analysis of the substation engineering project equipment design scheme, and detection of whether the substation engineering project equipment design scheme exists installation conflict; when the substation engineering project equipment design scheme exists installation conflict, re-plan the substation engineering project equipment design scheme; When the substation engineering project equipment design scheme does not exist installation conflict, the substation engineering project planning scheme is generated according to the substation engineering project equipment design scheme and the substation engineering project planning drawing.

7. A substation engineering project planning system based on grounding lightning protection analysis, characterized by, The memory includes a substation engineering project planning method based on lightning protection analysis program, and the substation engineering project planning method based on lightning protection analysis program is executed by the processor to realize the steps of the substation engineering project planning method based on lightning protection analysis according to any one of claims 1-6.

8. A substation engineering project planning device based on ground lightning analysis, characterized by, The memory includes a substation engineering project planning method based on lightning protection analysis program, and the substation engineering project planning method based on lightning protection analysis program is executed by the processor to realize the steps of the substation engineering project planning method based on lightning protection analysis according to any one of claims 1-6. The memory includes a substation engineering project planning method based on lightning protection analysis program, and the substation engineering project planning method based on lightning protection analysis program is executed by the processor to realize the steps of the substation engineering project planning method based on lightning protection analysis according to any one of claims 1-6. The memory includes a substation engineering project planning method based on lightning protection analysis program, and the substation engineering project planning method based on lightning protection analysis program is executed by the processor to realize the steps of the substation engineering project planning method based on lightning protection analysis according to any one of claims 1-6. The memory includes a substation engineering project planning method based on lightning protection analysis program, and the substation engineering project planning method based on lightning protection analysis program is executed by the processor to realize the steps of the substation engineering project planning method based on lightning protection analysis according to any one of claims 1-6. ​ 9. A computer-readable storage medium, characterized in that, ​

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