Simulation of Restrike Overvoltage Due to Switching off Shunt Capacitor Bank

ZHANG Sen-feng; SHANG Li-qun

doi:10.13296/j.1001-1609.hva.2011.12.004

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Simulation of Restrike Overvoltage Due to Switching off Shunt Capacitor Bank

更新时间：2025-04-26

- Simulation of Restrike Overvoltage Due to Switching off Shunt Capacitor Bank
- High VoltageApparatus Vol. 47, Issue 12, Pages: 1-5(2011)
- 作者机构：
  
  西安科技大学电气与控制工程学院
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2011.12.004
  CLC： TM53
- Published：2011
- 稿件说明：
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[1]张森峰,商立群.并联电容器组分闸重燃过电压仿真[J].高压电器,2011,47(12):1-5.

ZHANG Sen-feng, SHANG Li-qun. Simulation of Restrike Overvoltage Due to Switching off Shunt Capacitor Bank[J]. High voltageapparatus, 2011, 47(12): 1-5.
[1]张森峰,商立群.并联电容器组分闸重燃过电压仿真[J].高压电器,2011,47(12):1-5. DOI： 10.13296/j.1001-1609.hva.2011.12.004.

ZHANG Sen-feng, SHANG Li-qun. Simulation of Restrike Overvoltage Due to Switching off Shunt Capacitor Bank[J]. High voltageapparatus, 2011, 47(12): 1-5. DOI： 10.13296/j.1001-1609.hva.2011.12.004.

摘要

并联电容器广泛应用于电网的无功补偿

但由于频繁操作并联电容器导致的操作过电压会损坏绝缘设备

影响电网运行可靠性。并联电容器的操作过电压主要指分闸重燃过电压

合闸时一般不会产生威胁电容器绝缘的过电压。通过分析重燃过电压产生的原因

提出了通过增加一套常闭断路器来模拟开断并联电容器组时重燃过电压的仿真模型。利用所提出的仿真模型计算重燃过电压

并使用氧化锌避雷器限制并联电容器组分闸重燃过电压

仿真结果表明

所提出的模型是正确的。

Abstract

Shunt capacitor banks are widely used in power grid for reactive power compensation.However

the operating overvoltage caused by frequent operation of shunt capacitor bank would damage the insulated equipment and decrease the reliability of power system.The operation overvoltage on shunt capacitor bank is mainly referred to the restrike in switching-off action

while switching-on action usually does not generate the overvoltage which harms capacitor’s insulation.In this paper

a model is designed by adding a normal closed breaker for simulating the overvoltage due to switching off shunt capacitor bank by a vacuum circuit breaker

and the restrike overvoltage is calculated with the model.Moreover

the effect of limiting restrike overvoltage on shunt capacitor bank by using an MOA arrester is simulated.Simulation results show the proposed method is feasible.

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Related Institution

School of Electrical Engineering,Xi’an Jiaotong University

西安交通大学电气工程学院陕西西安710049

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