一起500kV变压器内部故障分析与处理  

Analysis and Treatment of an Internal Fault of 500kV Transformer

作　　者：王鑫 鲁永 胡润阁 赵映宇 汤会增 张利 WANG Xin;LU Yong;HU Run-ge;ZHAO Ying-yu;TANG Hui-zeng;ZHANG Li(State Grid Henan Extra High Voltage Company,Zhengzhou 450000,China;State Grid Henan Electric Power Company,Zhengzhou 450000,China;State Grid Henan DC Center,Zhengzhou 450000,China)

机构地区：[1]国网河南省电力公司超高压公司,河南郑州450000 [2]国网河南省电力公司,河南郑州450000 [3]国网河南省电力公司直流中心,河南郑州450000

出　　处：《变压器》2023年第7期71-75,共5页Transformer

摘　　要：本文中作者针对某500kV变压器油色谱数据异常情况,采用特征气体法、改良三比值法进行分析判断。结合常规试验和局部放电试验进行验证分析,发现了一起变压器电弧放电故障。通过后期返厂解体检查,查明了故障点,分析了故障原因,并提出了相关建议。In view of the abnormal situation of oil chromatogram data of a 50okV transformer,the characteristic gas method and the improved three ratio method are used to analyze and judge.Combined with routine test and partial discharge test,a transformer arc discharge fault is found.Through the later return to the factory for disassembly and inspection,the fault point is found out,the cause of the fault is analyzed,and relevant suggestions are present.

关 键 词：变压器 故障分析 油色谱分析 

分 类 号：TM407[电气工程—电器]