Risk Analysis of Switch Position Signal Using Extended Contacts for Pumped Storage Unit Protection

ZHAO Bushi; HE Rufei; BI Zhiwei; WANG Fang

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Risk Analysis of Switch Position Signal Using Extended Contacts for Pumped Storage Unit Protection

更新时间：2025-11-18

- Risk Analysis of Switch Position Signal Using Extended Contacts for Pumped Storage Unit Protection
- Vol. 40, Issue 5, Pages: 51-54(2020)
- 作者机构：
  
  1. 南方电网调峰调频发电有限公司
  2. 湖南省湘电试验研究院有限公司
  3. 国网湖南省电力有限公司电力科学研究院
- 作者简介：
- 基金信息：
- DOI：
  CLC： TV737;TV743
- Published：2020
- 稿件说明：
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[1]赵补石,贺儒飞,毕智伟,王方.抽水蓄能保护开关位置信号采用扩展接点的风险分析[J].湖南电力,2020,40(05):51-54.

ZHAO Bushi, HE Rufei, BI Zhiwei, et al. Risk Analysis of Switch Position Signal Using Extended Contacts for Pumped Storage Unit Protection[J]. 2020, 40(5): 51-54.
[1]赵补石,贺儒飞,毕智伟,王方.抽水蓄能保护开关位置信号采用扩展接点的风险分析[J].湖南电力,2020,40(05):51-54. DOI：

ZHAO Bushi, HE Rufei, BI Zhiwei, et al. Risk Analysis of Switch Position Signal Using Extended Contacts for Pumped Storage Unit Protection[J]. 2020, 40(5): 51-54. DOI：

摘要

抽水蓄能机组及变压器保护需要采集开关位置信号进行工况判别

由于开关本体的位置辅助接点数量有限

往往需要接点扩展之后再供保护使用。以主变差动保护用的GCB分位接点信号为例

通过对开关行程、动作时序、保护动作逻辑的分析

研究了开关位置信号采用扩展接点对保护动作行为造成的影响

提出了由此产生的保护误动风险

并给出防范此问题的建议。

Abstract

The pumped storage unit and the transformer protection need to collect the switch position signal for the working condition discrimination. Because the position of the switch body is limited

it is often necessary to expand the contact point for protection. Taking the GCB grading contact for main transformer differential protection as an example

through the analysis of the switching stroke

the action sequence

the protection action logic and the influence of the extended position on the protection action behavior of the switch position signal is studied. The risk of protection misoperation is put forward

and some suggestions about preventing this problem are given.

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Related Institution

湖南电力调度通信局

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华中科技大学湖北武汉430074

State Grid Hunan Electric Power Corporation Maintenance Company

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