摘要
文中结合一起有载分接开关油流继电器重瓦斯保护误动导致220 kV变压器跳闸事故展开分析。通过对油流继电器干簧管的绝缘电阻测试、试验,结合现场检查、试验情况和故障录波对事故动作逻辑进行反复推演分析,找到了油流继电器干簧管的设计缺陷及事故诱因,并提出合理的整改建议。
A 220 kV transformer tripping accident caused by heavy gas misoperation of oil-flow relay in on-load tap-changer(OLTC)is analyzed.Through the test and examination of the insulation resistance of reed switch in oil-flow relay and combined with the fault recording wave,the accident action logic is repeatedly deduced and analyzed.The root causes of the accident and a design defect of reed switch in oil-flow relay are found out,and some reasonable suggestions are put forward.
作者
邱炜
郑荣锋
黄鑫
刘君
陆晓彬
胡林
徐清鹏
QIU Wei;ZHENG Rongfeng;HUANG Xin;LIU Jun;LU Xiaobin;HU Lin;XU Qingpeng(State Grid Chengdu Electric Power Supply Company,Chengdu 610041,Sichuan,China)
出处
《四川电力技术》
2022年第4期87-90,共4页
Sichuan Electric Power Technology
关键词
变压器
有载重瓦斯
游离碳
事故分析
transformer
heavy gas of OLTC
free carbon
accident analysis