220kV变压器重瓦斯事故分析及预防措施

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摘要瓦斯继电器是变压器主保护的非电量保护装置。本文针对一起220kV主变重瓦斯保护动作引起开关跳闸的事故,进行了全面、深入的事故原因分析和论证。受下级站室开关柜短路事故影响,短时间内2次同时起停2台油泵,引起变压器油流快速向上涌动,冲击瓦斯继电器挡板,导使主变重瓦斯保护动作跳闸。针对此次事故暴露的问题,采取了对应的防范措施,对变压器的维护、试验和检修等方面提出了建议。

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	陈晓云
	张伟光

关键词 ：气体继电器, 变压器, 重瓦斯保护, 强油循环

Abstract：Gas relay is the main non-power protection device of the transformer . In this paper, the tripping accident caused by heavy gas protection operation of 220kV transformer is analyzed. Some in-depth investigation and analysis of possible causes was made. The cause of the accident is considered to be the transformer oil flow quickly upward surge and impact gas relay. A short time twice at the same time start and stop 2 oil pump caused by the short circuit of the substation impact of transformer. According to the problems exposed by this accident, the corresponding preventive measures was taken. At last, Proposed the testing and maintenance recommendations for transformer.

Key words： gas relay transformer heavy gas trip OFAF

收稿日期: 2017-07-03 出版日期: 2018-01-22

作者简介: 陈晓云（1982-）,女,硕士,工程师,从事企业电力系统保护以及高低压电气设备技术管理工作。

引用本文:

陈晓云, 张伟光. 220kV变压器重瓦斯事故分析及预防措施[J]. 电气技术, 2018, 19(1): 94-96. Chen Xiaoyun, Zhang Weiguang. Heavy gas protection fault analysis and prevention of 220kV transformer. Electrical Engineering, 2018, 19(1): 94-96.

链接本文:

https://dqjs.cesmedia.cn/CN/Y2018/V19/I1/94