扫描电镜技术在超高压变压器局部放电试验故障诊断的应用  

Application of Scanning Electron Microscope in Fault Diagnosis of PD test of UHV Transformer

作　　者：马小光[1] 马昊 魏菊芳[2,3] 张鑫 刘力卿[2,3] 冯军基 MA Xiao-guang;MA Hao;WEI Ju-fang;ZHANG Xin;LIU Li-qing;FENG Jun-ji(State Grid Tianjin Electric Power Company,Tianjin 300010,China;Electric Power Research Institute of Tianjin Electric Power Corporation,Tianjin 300384,China;Tianjin Key Laboratory of Internet of Things in Electricity,Tianjin 300384,China)

机构地区：[1]国网天津市电力公司,天津300010 [2]国网天津市电力公司电力科学研究院,天津300384 [3]天津市电力物联网企业重点实验室,天津300384

出　　处：《变压器》2021年第6期66-69,共4页Transformer

基　　金：国家电网公司总部科技项目资助-(5500-202055092A-0-0-00)热态下在运变压器抗短路能力综合评估技术研究。

摘　　要：本文中作者介绍了一起500k V超高压变压器局部放电试验发生绝缘击穿故障,通过应用扫描电镜技术、带电检测技术等,从产品设计、制造、绝缘件性能等方面总结了故障原因,进而提出了相关建议。In this article,the author introduces a 500 k V UHV transformer PD test that has an insulation breakdown failure.Through the application of scanning electron microscopy technology,live detection technology,the reasons for the failure are summarized from the aspects of product design,manufacturing and insulation performance.Some suggestions are presented.

关 键 词：油浸式电力变压器 绝缘系统 状态评价 局部放电试验 

分 类 号：TM406[电气工程—电器]