Study on Imbalance Protection Setting of Capacitor C<sub>1</sub> in AC Filter at Converter Station

DOU Ruting; LI Bao

doi:10.14044/j.1674-1757.pcrpc.2014.06.005

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Study on Imbalance Protection Setting of Capacitor C₁ in AC Filter at Converter Station

更新时间：2024-09-14

- Study on Imbalance Protection Setting of Capacitor C₁ in AC Filter at Converter Station
- POWER CAPACITOR & REACTIVE POWER COMPENSATION Vol. 35, Issue 6, Pages: 19-23(2014)
- 作者机构：
  
  1. 中国能源建设集团广东省电力设计研究院
  2. 中国南方电网超高压输电公司广州局
- 作者简介：
- 基金信息：
- DOI：10.14044/j.1674-1757.pcrpc.2014.06.005
  CLC： TM53;TM721.1
- Published：2014，
- 稿件说明：
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[1]窦如婷,李豹.换流站交流滤波器C_1电容器不平衡保护定值研究[J].电力电容器与无功补偿,2014,35(06):19-23.

DOU RUTING, LI BAO. Study on Imbalance Protection Setting of Capacitor C₁ in AC Filter at Converter Station. [J]. Power capacitor & reactive power compensation, 2014, 35(6): 19-23.
[1]窦如婷,李豹.换流站交流滤波器C_1电容器不平衡保护定值研究[J].电力电容器与无功补偿,2014,35(06):19-23. DOI： 10.14044/j.1674-1757.pcrpc.2014.06.005.

DOU RUTING, LI BAO. Study on Imbalance Protection Setting of Capacitor C₁ in AC Filter at Converter Station. [J]. Power capacitor & reactive power compensation, 2014, 35(6): 19-23. DOI： 10.14044/j.1674-1757.pcrpc.2014.06.005.

摘要

不平衡保护是高压换流站交流滤波器C1电容器的主保护。介绍了C1不平衡保护的双向计数原理

对电容器故障后元件过电压情况进行计算分析。结合计算结果和C1不平衡保护跳闸统计分析

对保护分段动作定值进行研究

发现目前的保护定值不利于交流滤波器的可靠运行

且使得II段保护出口的设置失去了意义。通过对电容器元件过电压性能的分析

结合交流滤波器的实际运行经验

分别给出II段、III段保护定值的调整建议

调整后的保护定值可以很好地体现保护的分段动作逻辑

减少交流滤波器跳闸事故的发生。

Abstract

Imbalance protectiom is the main protection of capacitor C1 in AC filter of high voltage converter station.In this paper

bi-directional counting principle of C1 imbalance protection is introduced and the overvoltage of elements after the fault of capacitor is calculated and analyzed.The operaion setting of the protection section is studied based on the calculation result and tripping statistical analysis of C1 imbalance protection.It is found that the current protection setting is not favaourable for reliable operation of AC filter and would make output of segment II protection out of function.The adjustment suggestion about setting of section II and III is given respectively throughtout overvoltage performance analysis of capacitor elements and with combination of actual operation experience of AC filter.The protection setting after adjustment can reflect very well section action logic and reduce the AC tripping accidents of AC filter.

关键词

交流滤波器C1不平衡保护双向计数过电压分析保护定值

Keywords

AC filterC1imbalance protectionbi-directional countingovervoltage analysisprotection setting

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Study on Imbalance Protection Setting of Capacitor C1 in AC Filter at Converter Station

DOI：10.14044/j.1674-1757.pcrpc.2014.06.005

摘要

Abstract

关键词

Keywords

references

Study on Imbalance Protection Setting of Capacitor C₁ in AC Filter at Converter Station