一起特高压换流变压器油中总烃超标问题的分析和处理  

Analysis and Treatment of Excessive Total Hydrocarbons in the Oil of an UHV Converter Transformer

作　　者：侯全兵 张金良 胡鹏飞 赵拓 侯永涛 HOU Quanbing;ZHANG Jinliang;HU Pengfei;ZHAO Tuo;HOU Yongtao(Shandong Electrical Engineering&Equipment Group Co.,Ltd.,Jinan 250001,China;Shandong Power Equipment Co.,Ltd.,Jinan 250001,China)

机构地区：[1]山东电工电气集团有限公司,山东济南250001 [2]山东电力设备有限公司,山东济南250001

出　　处：《山东电力高等专科学校学报》2024年第1期18-21,共4页Journal of Shandong Electric Power College

摘　　要：某特高压换流变压器运行时油中总烃超标,最后被迫退出运行,返厂检修。利用油色谱分析、长时空载试验、局部放电试验、超声波定位、解体检查等手段,对故障原因进行分析,最终确定换流变压器总烃超标与三角形硅钢片、纠结线虚焊导致的两处过热点有关,并进行了相应处理,处理后换流变压器顺利通过了出厂试验,为类似故障的分析和处理提供了参考。An accident of excessive total hydrocarbons in the oil of a certain ultra-high voltage(UHV)converter transformer led to its forced shutdown and return to factory for maintenance.Through the methods such as oil chromatography analysis,prolonged no-load test,partial discharge test,ultrasonic locating and disassembly inspection,the causes of the fault are analyzed.It is ulti⁃mately determined that the accident of excessive total hydrocarbons in the oil of the converter transformer is related to two over⁃heating points caused by triangular silicon steel sheets and interleaved wire pseudo soldering.The corresponding treatment mea⁃sures are implemented,and then the converter transformer successfully passes the delivery test,which provides reference for the analysis and treatment of similar faults.

关 键 词：油色谱分析 总烃 三角形硅钢片 过热 虚焊 

分 类 号：TM406[电气工程—电器]