Power transmission line corridor lightning damage distribution statistics method based on nuclear density estimation

Abstract

The invention relates to a power transmission line corridor lightning damage distribution statistics method based on nuclear density estimation. The power transmission line corridor lightning damage distribution statistics method comprises the following steps of: obtaining the main discharge longitude and latitude data of multiple-year lightning activities by a lightning locating system, and obtaining a ground flash density matrix; collecting a power grid power transmission line tower pole coordinate and the multiple-year lightning stroke flashover fault record of the power grid power transmission line tower pole coordinate, obtaining the position of a power transmission line tower pole and the position of a lightning damage tower pole, independently calculating the density distribution function of the power grid tower pole and the density distribution function of the lightning damage tower pole, and independently drawing a distribution diagram; through data collection, independently obtaining a power grid tower pole density matrix and a lightning damage tower pole density matrix, and obtaining a ground flash-power grid tower pole compound density matrix through the power grid tower pole density matrix and the lightning damage tower pole density matrix; and calculating the correlation of the ground flash-power grid tower pole compound density matrix and the lightning damage tower pole density matrix, and drawing a power grid lightning damage distribution diagram. The power grid lightning damage distribution diagram drawn by the method exhibits high correlation with lightning damage activities, lightning prevention can be effectively guided, and the method has a practical value in the regional lightning prevention of the power grid.

Description

technical field [0001] The invention relates to the fields of a lightning positioning system and a lightning damage distribution of a power grid, and in particular to a statistical method for lightning damage distribution of transmission line corridors based on kernel density estimation. Background technique [0002] In recent years, due to the shortage of land resources in my country, the project of sharing transmission line corridors is very common. Compared with the scope of lightning activities, the coverage area of ​​line corridors is very limited, and the density of towers in the corridors is different. Therefore, how to measure the impact of ground lightning activities on line corridors is A problem worth studying, analyzing the correlation between the law of lightning activity and lightning accidents on transmission lines is of great significance to the regional lightning protection work of the power grid. [0003] The Lightning Location System (LLS) is a fully automa...

AI Technical Summary

Problems solved by technology

[0004] In the past, the grid method was often used for the statistics of the lightning damage distribution of the power grid. However, the grid method has low statistical resolution, unclear physical meaning of lightning parameters in each grid during the statistical process, and the selection of anchor points has a great impact on the statistical results. insufficient

In addition, the existing statistical considerations for the distribution of lightning damage in the power grid are single, and cannot predict and prevent lightning damage activities well.

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