Improving of Calculation Method on Transmission Lines Lightning Protection Performance of Shielding Failure in Complex Terrain

LI Rui-fang; WU Guang-ning; CAO Xiao-bin; MA Yu-tang

doi:10.13296/j.1001-1609.hva.2011.04.018

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Improving of Calculation Method on Transmission Lines Lightning Protection Performance of Shielding Failure in Complex Terrain

更新时间：2025-04-26

- Improving of Calculation Method on Transmission Lines Lightning Protection Performance of Shielding Failure in Complex Terrain
- High VoltageApparatus Vol. 47, Issue 4, Pages: 96-100(2011)
- 作者机构：
  
  西南交通大学电气工程学院
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2011.04.018
  CLC： TM863
- Published：2011
- 稿件说明：
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[1]李瑞芳,吴广宁,曹晓斌,马御棠.复杂地形输电线路绕击耐雷性能计算方法的改进[J].高压电器,2011,47(04):96-100.

LI Rui-fang, WU Guang-ning, CAO Xiao-bin, et al. Improving of Calculation Method on Transmission Lines Lightning Protection Performance of Shielding Failure in Complex Terrain[J]. High voltageapparatus, 2011, 47(4): 96-100.
[1]李瑞芳,吴广宁,曹晓斌,马御棠.复杂地形输电线路绕击耐雷性能计算方法的改进[J].高压电器,2011,47(04):96-100. DOI： 10.13296/j.1001-1609.hva.2011.04.018.

LI Rui-fang, WU Guang-ning, CAO Xiao-bin, et al. Improving of Calculation Method on Transmission Lines Lightning Protection Performance of Shielding Failure in Complex Terrain[J]. High voltageapparatus, 2011, 47(4): 96-100. DOI： 10.13296/j.1001-1609.hva.2011.04.018.

摘要

绕击耐雷性能是评价输电线路雷击特性的重要指标。在电气几何模型的基础上

以悬链线方程为依据

研究了沿线路方向上任一截面的导、地线与杆塔处导、地线的高度差及该截面对应的保护角的计算方法

结合任一截面的海拔高度给出了新的绕击耐雷性能的计算方法。以两个算列显示了笔者给出的计算方法在实际工程中的应用。根据计算结果分析了单档距地形和最大绕击雷电流和雷击跳闸率的关系。研究结果可为防雷工程计算提供参考。

Abstract

Lightning protection performance of shielding failure is an important index to evaluate lightning characteristic of transmission lines.Traditional electro-geometric model is made a base and the catenary equation is adopted.The calculation method about the shielding angle in a certain section and the height difference of the conduct wire（ground wire） between in a certain section and in tower place were researched.Based on traditional electro-geometric method

and combined with a certain section altitude

a new calculation method of lightning protection performance of shielding failure was given.Two examples show the usage of calculation method given in the paper in engineering.According to calculating results

the relationship between terrains and maximum shielding failure lightning current in single span is analyzed.The research in the paper can offer reference to calculation on lightning protection engineering.

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