Analysis on Charge Fault of 750kV Shunt Reactor

LI Shan; Yilizhati; CHANG Ningning

doi:10.14044/j.1674-1757.pcrpc.2014.03.018

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Analysis on Charge Fault of 750kV Shunt Reactor

更新时间：2024-09-14

- Analysis on Charge Fault of 750kV Shunt Reactor
- POWER CAPACITOR & REACTIVE POWER COMPENSATION Vol. 35, Issue 3, Pages: 83-87(2014)
- 作者机构：
  
  新疆电力科学研究院
- 作者简介：
- 基金信息：
- DOI：10.14044/j.1674-1757.pcrpc.2014.03.018
  CLC： TM472
- Published：2014，
- 稿件说明：
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[1]李山,伊力扎提,常宁宁.一起750kV并联电抗器充电故障分析[J].电力电容器与无功补偿,2014,35(03):83-87.

LI SHAN, YILIZHATI, CHANG NINGNING. Analysis on Charge Fault of 750kV Shunt Reactor. [J]. Power capacitor & reactive power compensation, 2014, 35(3): 83-87.
[1]李山,伊力扎提,常宁宁.一起750kV并联电抗器充电故障分析[J].电力电容器与无功补偿,2014,35(03):83-87. DOI： 10.14044/j.1674-1757.pcrpc.2014.03.018.

LI SHAN, YILIZHATI, CHANG NINGNING. Analysis on Charge Fault of 750kV Shunt Reactor. [J]. Power capacitor & reactive power compensation, 2014, 35(3): 83-87. DOI： 10.14044/j.1674-1757.pcrpc.2014.03.018.

摘要

某超高压变电站在调试过程中进行750 kV并联电抗器充电时

差动保护出口跳闸

通过对故障时的波形、数据、一次设备的安装和试验进行了分析

确定了保护动作原因为电抗器末端套管CT极性接反、7521断路器A相的防跳继电器型号错误。在此基础上

对发现缺陷及时进行处理

保证充电成功

确保后续调试项目顺利进行。通过此次故障分析

要正确测量CT的极性

防止因极性接错导致差动误动作尤其重要;对防跳继电器的安装和验收提出了更严格的要求。

Abstract

The differential protection outlet is tripped in the charging of 750 kV shunt reactor during commissioning of certain EHV substation. Through the analysis of waveform

data

installation and test of primary equipment

the reason for the action is due to reverse connection of casing CT polarity at the end of reactor and type mistake of anti-pumping reply of phase a for 7521 circuit breaker. Moreover

the defects found are treated timely so to assure successful charging and smoothness of subsequence commissioning items.Through analysis of the fault it is important to measure correctly polarity of CT and prevent differential action and mal-operation due to wrong connection of polarity;and more strict requirement to the installation and testing of anti-pumping relay is proposed.

关键词

并联电抗器套管CT极性断路器防跳继电器

Keywords

shunt reactorcasing CTpolaritycircuit breakeranti-pump relay

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