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
侯全兵 1张金良 2胡鹏飞 2赵拓 1侯永涛1
作者信息
- 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
- 折叠
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.
Abstract
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Key words
oil chromatography analysis/total hydrocarbons/triangular silicon steel sheet/overheating/pseudo soldering引用本文复制引用
出版年
2024
NETL
NSTL
维普
万方数据