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Power transmission line lightning stroke risk assessment method and system based on distribution network lightning stroke data

A risk assessment, transmission line technology, applied in data processing applications, information technology support systems, instruments, etc., can solve the problem of incomplete lightning arrester lightning strike times, lightning arrester can not record lightning strike data, and lightning strike data is difficult to analyze and analyze the lightning strike risk of transmission lines. Evaluation and other problems, to avoid solving difficult problems and parameter design problems, easy to popularize and apply, and have the effect of many lightning trips

Active Publication Date: 2022-08-05
JIANGSU ELECTRIC POWER CO +1
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Problems solved by technology

However, the number of trips of a single transmission line is still relatively small. At present, the lightning protection design standards of transmission line towers are relatively high, and the lightning protection facilities are relatively comprehensive. Record the lightning strike data on the overhead ground line, resulting in the incomplete number of lightning strikes counted by the arrester, which makes it difficult to apply the historical lightning strike data to the analysis and assessment of the lightning strike risk of the existing transmission line

Method used

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  • Power transmission line lightning stroke risk assessment method and system based on distribution network lightning stroke data
  • Power transmission line lightning stroke risk assessment method and system based on distribution network lightning stroke data
  • Power transmission line lightning stroke risk assessment method and system based on distribution network lightning stroke data

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[0042] The present application will be further described below with reference to the accompanying drawings. The following examples are only used to more clearly illustrate the technical solutions of the present invention, and cannot be used to limit the protection scope of the present application.

[0043] like figure 1 It is a calculation flow chart of a lightning strike risk assessment method for transmission lines based on distribution network lightning strike data of the present invention, and the method includes the following steps:

[0044] Step 1: Obtain the average annual number of thunderstorm days in the area to be evaluated, and the historical lightning strikes and trip times of each line of the distribution network in the area to be evaluated;

[0045] Specifically, the average annual number of thunderstorm days in the area in the past three years is obtained based on the local meteorological database, and the number of lightning strikes and trips of each line of...

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Abstract

According to the power transmission line lightning stroke risk assessment method and system based on the distribution network lightning stroke data, meteorological data and the distribution line lightning stroke data are combined, the lightning stroke risk of a power transmission line is assessed more accurately, and the method and system have important significance in identifying the power transmission line with the large lightning stroke probability and conducting differential lightning protection on the power transmission line. According to the method, based on historical lightning stroke data of the power distribution line, the regional lightning stroke probability is finely analyzed through a grid statistics method, the grid lightning stroke probability is used for analyzing the lightning stroke risk of the power transmission line according to a grid traversed by the power transmission line, and the lightning stroke probability of the power transmission line is comprehensively calculated in combination with traditional meteorological data and ground lightning density data. Therefore, the power transmission line with a large lightning stroke risk can be identified, and lightning protection measures can be enhanced in a targeted manner.

Description

technical field [0001] The invention relates to the technical field of lightning prevention and application of transmission lines, and more particularly, to a method and system for lightning strike risk assessment of transmission lines based on distribution network lightning strike data. Background technique [0002] Lightning strike is an important factor affecting the reliability of power supply of transmission lines, especially in areas with frequent lightning activities. The installation of overhead ground wires, grounding, line arresters, and lightning rods is still the main means of lightning protection for transmission lines at present. However, the cost of installing these lightning protection equipment is relatively high. Therefore, evaluating the lightning strike risk of different transmission lines and conducting differentiated lightning protection design for the lines has become an important method to reduce the lightning protection cost of transmission lines. ...

Claims

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Application Information

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IPC IPC(8): G06Q10/06G06Q50/06
CPCG06Q10/0635G06Q50/06Y04S10/50
Inventor 金伟超石一峰童充李富鹏王亮付柳笛郑建勇徐洋吴越涛
Owner JIANGSU ELECTRIC POWER CO
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