摘要
本文综合应用特高频和超声法,对220kV组合电器电缆终端缺陷进行分析并准确定位。在应用特高频法初步判断气室存在绝缘类缺陷后,结合超声法对缺陷类型进行确认并精准定位,成功定位某站220kV组合电器电缆终端绝缘缺陷。经停电解体验证,避免了一起主变受总间隔电缆终端绝缘击穿短路事故。
In this paper,UHF and ultrasonic methods are applied to analyzing and locating the terminal defects of 220 kV composite cable. After using the UHF method to tentatively determine the insulation defects in the air chamber,the ultrasonic method is employed to confirm the defect types and locate the defects accurately.A terminal insulation defect of cable terminal for 220 kV combined electrical equipment in a station is successfully located.Through the power-cut disassembly examination,the main transformer is prevented from insulation breakdown short circuit accident at the main distance of the main transformer.
作者
王小朋
王艳华
魏彬
牛丽丽
房克荣
兰德刚
马明阳
WANG Xiaopeng;WANG Yanhua;WEI Bin;NIU Lili;FANG Kerong;LAN Degang;MA Mingyang(State Grid Tianjin Electric Power Company Maintenance Company,Tianjin 300250,China;State Grid Tianjin East Power Supply Company,Tianjin 300250,China;State Grid Tianjin Power Company Training Center,Tianjin 300181,China)
出处
《电工技术》
2018年第2期92-94,共3页
Electric Engineering
关键词
GIS
局部放电
特高频法
超声法
绝缘缺陷
GIS
partial discharge
UHF method
Ultrasonic method
Insulation defects
