高压支柱瓷绝缘子异常发热原因分析及预防措施  

Analysis on the Abnormal Heating of High Voltage Post Insulator With Ceramic Material and Preventive Measures

作　　者：孙庆峰 华正轩 梅简 郑振华 任啸 徐胜 UN Qingfeng;HUA Zhengxuan;MEI Jian;ZHENG Zhenhua;REN Xiao;XU Sheng(Zhejiang Electric Power Boiler&Pressure Vessel Supervision and Inspection Institute Company Limited,Hangzhou 310014,China;E.Energy Technology Co.,Ltd.,Hangzhou 310014;State Grid Zhejiang Electric Power Research Institute,Ningbo 310014,China;State Grid Ningbo Power Supply Company,Hangzhou 315016,China;State Grid Jinhua Power Supply Company,Jinhua 321000,China;State Grid Chongqing Electric Power Research Institute,Chongqing 401123,China)

机构地区：[1]浙江省电力锅炉压力容器检验所有限公司,杭州310014 [2]杭州意能电力技术有限公司,杭州310014 [3]国网宁波供电公司,浙江宁波315016 [4]国网浙江省电力有限公司电力科学研究院,杭州310014 [5]国网金华供电公司,浙江金华321000 [6]国网重庆市电力公司电力科学研究院,重庆401123

出　　处：《电瓷避雷器》2020年第3期232-236,共5页Insulators and Surge Arresters

摘　　要：针对某变电站35 kV主变闸刀支柱瓷绝缘子异常发热问题,通过分析加压模拟测温、直流泄漏电流检测、绝缘电阻测试和超声波检测试验的结果,初步认为支柱瓷绝缘子异常发热的原因是瓷绝缘子内部存在疏松或裂纹等结构缺陷。为此,对该瓷绝缘子进行了解剖检查和空隙性吸红试验,结果表明瓷绝缘子内部确实存在疏松(黄芯)、裂纹缺陷。最后,对该瓷绝缘子异常发热问题,提出了一系列预防措施以供借鉴和参考。To clarify the cause of the abnormal heating on 35 kV high voltage post insulators of ceramic material,a series of tests including temperature measurement during high voltage simulation,leakage current detection,insulation resistance test and ultrasonic testing are done.Synthesizing these test results,a conclusion that internal structure flaws results in the abnormal heating fault problem can be given.To prove this,anatomic examination and fuchsin test are performed and the results indicate that loose flaws and crack flaws do exist inside the high voltage post insulator of ceramic material.At last,a series of preventive measure are proposed on this kind of problem.

关 键 词：高压支柱瓷绝缘子 异常发热 试验检测 原因分析 

分 类 号：TM216[一般工业技术—材料科学与工程]