Suzhou Electric Appliance Research Institute
期刊号: CN32-1800/TM| ISSN1007-3175

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一起CT断线告警引起母线保护退出运行的故障分析

来源:电工电气发布时间:2016-04-06 14:06 浏览次数:9

一起CT断线告警引起母线保护退出运行的故障分析 

陈刚,钱碧甫,王策 
(温州供电公司,浙江 温州 325000) 
 

摘 要: 介绍一起由闸刀辅助接点损坏引起母线保护CT 断线告警的故障,通过对BP-2B 差流回路和闸刀开入逻辑的分析,得出此故障是由于外部回路的闸刀接点开入错误所导致,提出多种可行性解决方案,以期减少和杜绝因闸刀辅助接点损坏或接触不良可能引起的危害。
关键词: 母线保护;辅助接点;CT 断线;措施
中图分类号:TM645.1+1 文献标识码:B 文章编号:1007-3175(2014)11-0023-03


Malfunction Analysis of Bus Protection Out of Services Because of Current Transformer Disconnection Alarm 

CHEN Gang, QIAN Bi-fu, WANG Ce 
(Wenzhou Power Supply Company, Wenzhou 325000, China) 
 

Abstract: Introduction was made to the malfunction of current transformer disconnection alarm owing to the auxiliary contact broken in isolating switch. This paper analyzed the BP-2B difference stream circuit and the making and breaking logic in isolating switch. The mistakes caused by making and breaking of the contacts in isolating switch of peripheral circuit made bus protection out of services. Some feasibility solutions were proposed, so as to reduce and avoid the negative influence of the auxiliary contact broken and poor contact in isolating switch.
         Key words: bus protection; auxiliary contact; current transformer disconnection; solution


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