Application of Unbalance Protection of Capacitor Bank in 1 000 kV Ultra-high Voltage Station

CUI Guo-qiang; ZHANG Peng; CHENG Xiao-sheng

doi:10.14044/j.1674-1757.pcrpc.2012.03.011

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Application of Unbalance Protection of Capacitor Bank in 1 000 kV Ultra-high Voltage Station

更新时间：2024-09-14

- Application of Unbalance Protection of Capacitor Bank in 1 000 kV Ultra-high Voltage Station
- POWER CAPACITOR & REACTIVE POWER COMPENSATION Vol. 33, Issue 3, Pages: 49-55(2012)
- 作者机构：
  
  国家电网公司运行分公司晋东南管理处
- 作者简介：
- 基金信息：
- DOI：10.14044/j.1674-1757.pcrpc.2012.03.011
  CLC： TM531.4
- Published：2012，
- 稿件说明：
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[1]崔国强,张鹏,成小胜.1000kV特高压站电容器组桥差不平衡保护的应用[J].电力电容器与无功补偿,2012,33(03):49-55.

CUI GUO-QIANG, ZHANG PENG, CHENG XIAO-SHENG. Application of Unbalance Protection of Capacitor Bank in 1 000 kV Ultra-high Voltage Station. [J]. Power capacitor & reactive power compensation, 2012, 33(3): 49-55.
[1]崔国强,张鹏,成小胜.1000kV特高压站电容器组桥差不平衡保护的应用[J].电力电容器与无功补偿,2012,33(03):49-55. DOI： 10.14044/j.1674-1757.pcrpc.2012.03.011.

CUI GUO-QIANG, ZHANG PENG, CHENG XIAO-SHENG. Application of Unbalance Protection of Capacitor Bank in 1 000 kV Ultra-high Voltage Station. [J]. Power capacitor & reactive power compensation, 2012, 33(3): 49-55. DOI： 10.14044/j.1674-1757.pcrpc.2012.03.011.

摘要

从电容器内部结构出发简单介绍了电容器内熔丝保护原理

电容器内部元件如果发生绝缘击穿

与之串联的内熔丝熔断

电容器组电容会发生相应变化

最终导致不平衡电流的变化。文章对两种典型的电容器组双桥差不平衡电流保护进行了计算和分析

推出简易的计算公式

并通过电容器组的实际运行数据对其应用加以验证。

Abstract

In this paper

the principle of the protection of the capacitor with internal fuse is introduced briefly according to the internal structure of the capacitor

if the internal components of the capacitor breakdown

the series internal fuse in fuse

the capacitance will change accordingly

and will lead to the changes of the unbalanced current ultimately.In this paper

two kinds of typical protection on double differential current bridges of large capacity capacitor bank are calculated and analyzed

a simple formula is derived

and according to actual operating data

the practical applications are verified.

关键词

内熔丝并联电容器组双桥差不平衡保护整定计算

Keywords

internal fuseshunt capacity bankdouble differential current bridgesunbalance protectionsetting calculation

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