一起252 kV罐式断路器内部放电故障的分析及仿真验证  

Analysis and Simulation Verification on Internal Discharge Fault of 252 kV Dead Tank Circuit Breaker

作　　者：张丕沛 李杰 李秀卫 汪鹏 师伟 ZHANG Pipei;LI Jie;LI Xiuwei;WANG Peng;SHI Wei(State Grid Shandong Electric Power Company Electric Power Research Institute,Jinan 250003,China)

机构地区：[1]国网山东省电力公司电力科学研究院,济南250003

出　　处：《高压电器》2022年第9期216-220,共5页High Voltage Apparatus

基　　金：国网山东省电力公司科技项目(520626210012)。

摘　　要：罐式断路器作为SF_(6)气体绝缘封闭设备,若气室内残留灰尘、金属碎屑等异物,则可能在带电后引发放电跳闸事故。文中介绍了一起252 kV罐式断路器内部放电故障引起的跳闸事故,通过返厂解体检查,判断此次故障是由施工过程中引入的异物导致的,并结合罐体内部电场仿真计算,对放电发生在送电过程中而非耐压试验时的原因进行了解释。As SF_(6) gas insulated and enclosed equipment,dead tank circuit breaker can lead to discharge trip after being energized,in case of such foreign matters as dust and metal debris in the gas compartment,The trip fault due to internal discharge of 252 kV dead tank circuit breaker is introduced in this paper.It is judged through disassembly and inspection in the factory that the fault is caused by the foreign matter during the construction period.The reason of the discharge occurring not during withstanding voltage test but during putting into operation is explained in combination with electric filed simulation and calculation inside the enclosure.

关 键 词：罐式断路器 SF_(6) 异物 放电 电场仿真 

分 类 号：TM855[电气工程—高电压与绝缘技术]