Research on Measures to Reduce the Lightning Breakdown of 10kV Distribution Lines

2021 6th Asia Conference on Power and Electrical Engineering (ACPEE) Pub Date : 2021-04-01 DOI:10.1109/ACPEE51499.2021.9437000

Xiaotong Huang, Jibiao He, Yan-long Yang, Chuangsheng Chen, Ruiqiang Wang, Ya-fang Chen

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Abstract

The difference between lightning protection and distribution line is analyzed in the paper, which shows that induction lightning protection is the main cause of distribution line. The influence of the heat generated by lightning current and power frequency current on the distribution line is calculated. The results show that the lightning current does not cause the wire breaking, and the continuous power frequency current is the cause of the power distribution line breaking. The simulation model of overhead transmission line in distribution network is established and the induced lightning overvoltage on the line is calculated by simulation. Considering the working conditions of different grounding resistances, the paper calculates and compares the limiting effect of lightning arrester and ground wire on the overvoltage of the circuit. The results show that the lightning arrester has better lightning limiting effect than the two other lightning protection measures. however, the ground resistance needs to be kept low to ensure the lightning arrester is effective.

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减少10kV配电线路雷击击穿的措施研究

分析了雷电保护与配电线路的区别，指出感应雷电保护是配电线路的主要原因。计算了雷电电流和工频电流产生的热量对配电线路的影响。结果表明，雷电电流不会引起配电线路断线，而持续工频电流是配电线路断线的原因。建立了配电网架空输电线路的仿真模型，通过仿真计算了线路上的感应雷击过电压。考虑不同接地电阻的工况，计算比较了避雷器和地线对电路过电压的限制作用。结果表明，避雷器比其他两种防雷措施具有更好的限雷效果。然而，接地电阻需要保持低，以确保避雷器是有效的。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2021 6th Asia Conference on Power and Electrical Engineering (ACPEE)

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