Analysis and improvement on shunt capacitor protection device trip of converter station

ZOU Hongsen

doi:10.3969/j.issn.1672-3643.2013.05.003

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Analysis and improvement on shunt capacitor protection device trip of converter station

更新时间：2025-09-24

- Analysis and improvement on shunt capacitor protection device trip of converter station
- Ningxia Electric Power Issue 5, (2013)
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- DOI：10.3969/j.issn.1672-3643.2013.05.003
  CLC：
- Published Online：05 November 2020，
  
  Published：2013
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ZOU Hongsen. Analysis and improvement on shunt capacitor protection device trip of converter station[J]. Ningxia electric power, 2013, (5).
DOI：

ZOU Hongsen. Analysis and improvement on shunt capacitor protection device trip of converter station[J]. Ningxia electric power, 2013, (5). DOI： 10.3969/j.issn.1672-3643.2013.05.003.

摘要

针对换流站无功设备自动投切过程中发生的一起滤波器差动保护单套保护跳闸事件

基于并联电容器保护配置和交流滤波器选相合闸装置原理

对跳闸原因进行深入分析。分析结果表明:并联电容器选相合闸装置未在B相电压过零点合闸

同时并联电容器差动保护未躲过短时冲击电流

以及保护装置对高频电流过滤处理不充分是导致单套保护装置跳闸的根本原因。

Abstract

Aiming at an single set protection of filter differential protection trip fault happend in thereactive power equipment automatic switching process in converter station

base on the deployment ofshunt capacitor protection device and phase selection switch on device principle of AC filter

deeplyanalyzes the trip causes. The analysis result shows that the ultimate causes of the trip are following:phase selection switch on device of shunt capacitor doesn’t switch on when B phase voltage passed ze?ro value

simultaneously shunt capacitor differential protection doesn’t avoid short time shock cur?rent

and the protection device filtration for high frequency current is insufficient.

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