Analysis of Capacitor Unbalanced Current Protection Action Caused by Discharge Coil

HE Jianlong; ZHANG Shaojiang; ZHENG Xin; WANG Zheng; ZHANG Quan

doi:10.14044/j.1674-1757.pcrpc.2020.02.002

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Analysis of Capacitor Unbalanced Current Protection Action Caused by Discharge Coil

更新时间：2024-09-14

- Analysis of Capacitor Unbalanced Current Protection Action Caused by Discharge Coil
- POWER CAPACITOR & REACTIVE POWER COMPENSATION Vol. 41, Issue 2, Pages: 8-12(2020)
- 作者机构：
  
  天津送变电工程有限公司
- 作者简介：
- 基金信息：
- DOI：10.14044/j.1674-1757.pcrpc.2020.02.002
  CLC： TM53;TM773
- Published：2020，
- 稿件说明：
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[1]何建龙,张少江,郑歆,王争,张泉.放电线圈引起电容器组不平衡电流保护动作分析[J].电力电容器与无功补偿,2020,41(02):8-12.

HE JIANLONG, ZHANG SHAOJIANG, ZHENG XIN, et al. Analysis of Capacitor Unbalanced Current Protection Action Caused by Discharge Coil. [J]. Power capacitor & reactive power compensation, 2020, 41(2): 8-12.
[1]何建龙,张少江,郑歆,王争,张泉.放电线圈引起电容器组不平衡电流保护动作分析[J].电力电容器与无功补偿,2020,41(02):8-12. DOI： 10.14044/j.1674-1757.pcrpc.2020.02.002.

HE JIANLONG, ZHANG SHAOJIANG, ZHENG XIN, et al. Analysis of Capacitor Unbalanced Current Protection Action Caused by Discharge Coil. [J]. Power capacitor & reactive power compensation, 2020, 41(2): 8-12. DOI： 10.14044/j.1674-1757.pcrpc.2020.02.002.

摘要

为保证高压并联电容器组能够安全可靠运行

解决由于放电线圈自身缺陷、使用不当、并发性故障等产生不平衡电流的问题

着重研究放电线圈对单星形桥式并联电容器组不平衡电流保护的影响。具体分析了不平衡电流保护原理

阐述了放电线圈的作用

并仿真验证放电线圈故障引起不平衡电流保护动作的原理。通过实际案例具体阐述了保护动作后故障分析的方法

提出了故障定位和常规试验的建议。

Abstract

In order to ensure safe and reliable operation of high voltage shunt capacitor banks and solve the problems of unbalanced current due to defects itself

improper use and concurrent faults of discharge coils

the influence of discharge coils on unbalanced current protection of single star bridge shunt capacitor banks is emphatically studied.The unbalanced current protection principle is analyzed specifically and the function of discharge coil is described.The principle of unbalanced current protection action due to discharge coil is verified by the simulation.The method on the fault analysis after the protection action is described by the actual case and the suggestion on fault location and common test is proposed.

关键词

并联电容器组放电线圈单星形桥式不平衡电流

Keywords

shunt capacitor bankdischarge coilsingle-star bridgeunbalanced current

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Related Institution

School of Electrical Engineering, Xi'an Jiaotong University

Inner Mongolia EHV Power Supply Company

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Maintenance Company of State Grid Ningxia Electric Power Company

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