Research on Striking Distance Factor for UHV Transmission Lines

XU Fei; YIN Li-qun; WEI Wei; DENG Yu-rong; XIA Xiao-fei

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Research on Striking Distance Factor for UHV Transmission Lines

更新时间：2025-04-26

- Research on Striking Distance Factor for UHV Transmission Lines
- High VoltageApparatus Vol. 45, Issue 1, Pages: 112-113+115(2009)
- 作者机构：
  
  广西电力试验研究院
- 作者简介：
- 基金信息：
- DOI：
  CLC： TM863
- Published：2009
- 稿件说明：
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[1]许飞,尹立群,韦巍,邓雨荣,夏小飞.超高压输电线路击距系数研究[J].高压电器,2009,45(01):112-113+115.

XU Fei, YIN Li-qun, WEI Wei, et al. Research on Striking Distance Factor for UHV Transmission Lines[J]. High voltageapparatus, 2009, 45(1): 112-113+115.
[1]许飞,尹立群,韦巍,邓雨荣,夏小飞.超高压输电线路击距系数研究[J].高压电器,2009,45(01):112-113+115. DOI：

XU Fei, YIN Li-qun, WEI Wei, et al. Research on Striking Distance Factor for UHV Transmission Lines[J]. High voltageapparatus, 2009, 45(1): 112-113+115. DOI：

摘要

为了更准确地对超高压线路进行防雷评价和计算

笔者依据长间隙放电与雷击放电的相似性

在实验室中建立击距系数模型

研究击距系数与相关因素的关系。实验结果显示击距系数与雷电流幅值大小并无相关性

但随着线路高度的增加而减小

运用数学分析方法得到击距系数K与杆塔高度h之间满足关系式:K=1.032 3-0.004 1×h。试验结果成功地解释了500 kV天广线某些地段现场屏蔽失效的问题

可以用于超高压输电线路防雷评价和计算。

Abstract

According to the comparability of lightning discharge and rod-plane gap discharge

a simulated experiment was carried out to determine the relation between striking distance factor and other parameter.Experimental result indicates that striking distance factor K decreases with the increase of line height h.The relation between K and h achieved from experimental data is: K=1.032 3-0.004 1×h.Based on the electromagnetic theory

some accidents on real transmission lines are explained satisfactorily with this expression.Therefore

the expression can be used in lightning protection calculation of UHV transmission lines.

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