Analysis of Abnormal Increase of Circuit Breaker Resistance for Pumped Storage Generator Units

XU Peng1; QIN Hua-wei2; ZHENG Shu-qing3; GAO Kai1

doi:10.13296/j.1001-1609.hva.2012.03.018

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Analysis of Abnormal Increase of Circuit Breaker Resistance for Pumped Storage Generator Units

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- Analysis of Abnormal Increase of Circuit Breaker Resistance for Pumped Storage Generator Units
- High VoltageApparatus Vol. 48, Issue 3, Pages: 90-94(2012)
- 作者机构：
  
  1. 华东电力试验研究院有限公司
  2. 华东天荒坪抽水蓄能有限责任公司
  3. 华东桐柏抽水蓄能发电有限责任公司
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2012.03.018
  CLC： TM561
- Published：2012
- 稿件说明：
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[1]徐鹏,秦华蔚,郑树青,高凯.抽水蓄能机组发电机断路器回路电阻异常增大原因分析[J].高压电器,2012,48(03):90-94.

XU Peng1, QIN Hua-wei2, ZHENG Shu-qing3, et al. Analysis of Abnormal Increase of Circuit Breaker Resistance for Pumped Storage Generator Units[J]. High voltageapparatus, 2012, 48(3): 90-94.
[1]徐鹏,秦华蔚,郑树青,高凯.抽水蓄能机组发电机断路器回路电阻异常增大原因分析[J].高压电器,2012,48(03):90-94. DOI： 10.13296/j.1001-1609.hva.2012.03.018.

XU Peng1, QIN Hua-wei2, ZHENG Shu-qing3, et al. Analysis of Abnormal Increase of Circuit Breaker Resistance for Pumped Storage Generator Units[J]. High voltageapparatus, 2012, 48(3): 90-94. DOI： 10.13296/j.1001-1609.hva.2012.03.018.

摘要

针对抽水蓄能机组发电机断路器主回路电阻异常增大的现象

笔者从带负荷后的主回路电阻测量、动态电阻测量以及灭弧室解体检查和触头污染物成份检测等方面

分析得出产生该现象的原因是污染物附着在触头表面

影响了触头间接触状态。运行过程中

在较大的负荷电流作用下

这种影响将会消弱。

Abstract

This paper analyses the reason of abnormal increase of main circuit resistance of generator circuit breaker（GCB） used in pumped storage units.By the means of the main circuit resistance test after large load-current

the dynamic contact resistance measurement

the arc-chute decomposition and the contactor pollutant component analysis

the true reason of circuit resistance abnormal increase is brought forward

that is the pollutant on the contactor impacts on the contact condition of contactor.And the large load-current will weaken this kind of effect on operating.

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