Diagnosis and Analysis of Unbalanced Protection of 10 kV Parallel Capacitor Bank

YANG Hongquan; GAO Jun; QIU Wei; LIU Yanqin; LIU Xin; LIU Jun; CAI Chuan; GUO Chao; CHEN Jia; HU Lin

doi:10.14044/j.1674-1757.pcrpc.2024.02.005

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Diagnosis and Analysis of Unbalanced Protection of 10 kV Parallel Capacitor Bank

Reactive Power Compensation and Filter | 更新时间：2024-09-14

- Diagnosis and Analysis of Unbalanced Protection of 10 kV Parallel Capacitor Bank
- Power Capacitor & Reactive Power Compensation Vol. 45, Issue 2, Pages: 27-31(2024)
- 作者机构：
  
  国网四川电力成都供电公司，成都　 610000
- 作者简介：
- 基金信息：
- DOI：10.14044/j.1674-1757.pcrpc.2024.02.005
  CLC：
- Published：2024-04，
  
  Received：22 February 2023，
- 稿件说明：
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YANG HONGQUAN, GAO JUN, QIU WEI, et al. Diagnosis and Analysis of Unbalanced Protection of 10 kV Parallel Capacitor Bank. [J]. Power capacitor & reactive power compensation, 2024, 45(2): 27-31.
DOI：

YANG HONGQUAN, GAO JUN, QIU WEI, et al. Diagnosis and Analysis of Unbalanced Protection of 10 kV Parallel Capacitor Bank. [J]. Power capacitor & reactive power compensation, 2024, 45(2): 27-31. DOI： 10.14044/j.1674-1757.pcrpc.2024.02.005.

摘要

针对一起10 kV并联电容器组不平衡保护动作的故障案例，通过现场对并联电容器、电抗器、放电线圈、避雷器等进行诊断性试验，利用PSCAD对不平衡电压仿真计算，以及根据规程重新核算保护定值，最终确认了引起保护动作原因为该电容器内部存在故障以及不平衡保护定值设置不当。

Abstract

In view of a fault case of unbalanced protection of 10 kV shunt capacitor bank

it is finally confirmed through on-site diagnostic tests on shunt capacitors

reactors

discharge coils and arresters simulation calculation of unbalanced voltage by the use of PSCAD that the cause of the protection is due to the fault inside the capacitor and the improper setting of the unbalanced protection setting.

关键词

并联电容器组不平衡保护保护定值诊断试验

Keywords

parallel capacitor bankunbalanced protectionprotection settingdiagnostic test

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