Study on Transient Overvoltage between Contacts of Switch in 750 kV Transmission Line Considering Lightning Corona

CHEN  Liang-jin; DU Bin; LIU Qing; SHI Wei

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Study on Transient Overvoltage between Contacts of Switch in 750 kV Transmission Line Considering Lightning Corona

更新时间：2025-04-26

- Study on Transient Overvoltage between Contacts of Switch in 750 kV Transmission Line Considering Lightning Corona
- High VoltageApparatus Issue 3, Pages: 167-169+172(2004)
- 作者机构：
  
  1. 西安交通大学电气工程学院
  2. 西安交通大学电气工程学院陕西西安710049
- 作者简介：
- 基金信息：
- DOI：
  CLC： TM86
- Published：2004
- 稿件说明：
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[1]陈梁金,杜斌,刘青,施围.计及雷击电晕时750kV进线开关触头间暂态过电压的研究[J].高压电器,2004(03):167-169+172.

CHEN Liang-jin, DU Bin, LIU Qing, et al. Study on Transient Overvoltage between Contacts of Switch in 750 kV Transmission Line Considering Lightning Corona[J]. High voltageapparatus, 2004, (3): 167-169+172.
[1]陈梁金,杜斌,刘青,施围.计及雷击电晕时750kV进线开关触头间暂态过电压的研究[J].高压电器,2004(03):167-169+172. DOI：

CHEN Liang-jin, DU Bin, LIU Qing, et al. Study on Transient Overvoltage between Contacts of Switch in 750 kV Transmission Line Considering Lightning Corona[J]. High voltageapparatus, 2004, (3): 167-169+172. DOI：

摘要

750kV线路进线保护段内单相导线遭受雷击时

导线上会出现强烈的电晕

使雷电波发生衰减和变形。基于线路的库-伏特性

并用简单的电路模型来模拟输电线路电晕特性

研究了进线开关在额定电压为600kV的MOA保护下触头间暂态过电压。结果表明

额定电压为600kV的MOA能有效保护进线开关

并且自身能正常工作;电晕使雷电波发生较大的衰减和变形

对开关触头间过电压幅值影响不大。

Abstract

When the lightning strokes the feed-in section of 750 kV transmission line

there will be strong corona that contributes to the attenuation and distortion of lightning current. It is concerned what corona will do on the transient overvoltage between contacts of switch. On the basis of the Q-V characteristics of transmission lines

in this paper

a simple circuit model is set up and the transient overvoltage between contacts is studied when the switch is under the protection of MOA of 600 kV rated voltage. The result of computation indicates that the switch in 750 kV transmission line can work normally under the protection of the MOA and the corona causes the great attenuation and distortion of lightning current and does little effect on overvoltage between the contacts.

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Related Institution

North China Branch of State Grid Corporation of China

Electric Power Research Institute, Jibei Electric Power Co., Ltd.

North China Electric Power Research Institute Co., Ltd.

西安高压电器研究所

沈阳工业大学 110023

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