Calculation Method of Shielding Failure Flashover Rate of Compact Transmission Line in Complex Terrain Area

L Zheng; ZHENG Hao-yuan; YANG Qing; SIMA Wen-xia; YUAN Tao; DONG Yue

doi:10.13296/j.1001-1609.hva.2013.11.021

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Calculation Method of Shielding Failure Flashover Rate of Compact Transmission Line in Complex Terrain Area

更新时间：2025-04-26

- Calculation Method of Shielding Failure Flashover Rate of Compact Transmission Line in Complex Terrain Area
- High VoltageApparatus Vol. 49, Issue 11, Pages: 117-122(2013)
- 作者机构：
  
  1. 中国南方电网超高压输电公司天生桥局
  2. 重庆大学输配电装备及系统安全与新技术国家重点实验室
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2013.11.021
  CLC： TM744
- Published：2013
- 稿件说明：
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[1]吕政,郑皓元,杨庆,司马文霞,袁涛,董岳.复杂地形下紧凑型输电线路绕击跳闸率计算方法[J].高压电器,2013,49(11):117-122.

L Zheng, ZHENG Hao-yuan, YANG Qing, et al. Calculation Method of Shielding Failure Flashover Rate of Compact Transmission Line in Complex Terrain Area[J]. High voltageapparatus, 2013, 49(11): 117-122.
[1]吕政,郑皓元,杨庆,司马文霞,袁涛,董岳.复杂地形下紧凑型输电线路绕击跳闸率计算方法[J].高压电器,2013,49(11):117-122. DOI： 10.13296/j.1001-1609.hva.2013.11.021.

L Zheng, ZHENG Hao-yuan, YANG Qing, et al. Calculation Method of Shielding Failure Flashover Rate of Compact Transmission Line in Complex Terrain Area[J]. High voltageapparatus, 2013, 49(11): 117-122. DOI： 10.13296/j.1001-1609.hva.2013.11.021.

摘要

紧凑型输电线路正在得到日益广泛的应用

但对其在复杂地形下的防雷性能研究却很少。笔者提出了一种计算分析500 kV紧凑型输电线路绕击防雷性能的方法

并将其应用于输电线路的雷击风险评估中。该方法基于经典电气几何模型

考虑三维空间内导、地线相对于地面的位置变化以及输电线路走廊地形的变化

以一个档距为研究对象来计算分析输电线路的绕击防雷性能。以某500 kV紧凑型输电线路的一段线路为例

计算其在复杂地形下的绕击防雷性能

结果表明

该方法能更好地反映线路实际运行情况

并为输电线路差异化防雷研究提供了参考。

Abstract

To investigate the anti-lightning performance of compact transmission lines in complex terrain area

a method for calculating shielding failure flashover rate is presented for evaluating anti-lightning performance of 500 kV compact transmission lines in complex terrain area. Based on the electro-geometric model（EGM）

a new model is constructed considering the micro-topography

and the relative positions of ground wire and conductor wire to the ground. Taking one spans of a 500 kV compact transmission line for example

the shielding failure flashover rate in complex terrain area is calculated. The result shows a good agreement with the actual data. The proposed method may be applied to diverse lightning protection.

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