This paper analyzes an on-load heavy gas tripping fault of the main transformer of the ll0kV substation in a power supply company.Through on-site oil and gas analysis and electrical tests of the transformer,it has been de-termined that the fault was caused by the fact that the vacuum bubble of the on-load switch had not been broken.Then,the hanging core of the on-load switch was disassembled and inspected,the cause of the stuck vacuum bubble was analyzed,the process of the fault was restored,and corresponding precautionary measures were proposed.
关键词
重瓦斯/有载调压变压器/分接开关/真空灭弧室
Key words
heavy gas/on-load regulating transformer/tap changer/vacuum arc-extinguishing chamber
万方数据