GIS暂态地电位升高的计算与分析  

The Calculation and Analysis of Transient Grounding Potential Rise in GIS

作　　者：钟连宏[1] 贺景亮[1] 

机构地区：[1]武汉大学电气学院,武汉430072

出　　处：《高电压技术》2000年第6期43-45,共3页High Voltage Engineering

摘　　要：针对某水电厂 2 2 0 k V GIS进行了模拟计算 ,讨论了单相 GIS暂态地电位升高问题 。The restroke between the contacts of SF 6 circuit breaker in GIS, the discharge of bus to enclosure and lightning current will resault in very fast front wave. With many times of refraction it will cause the high amplitude and high frequency overvoltage. This overvoltage will cause the grounding potential rise in enclosure and endanger the safety of the person and monitoring and control equirpment.It discussed the transient grounding potential rise in single phase GIS in this paper. The simulation calculation for 220 kV GIS in hydro power plant is made. Finally, the measures to suppress the transient interference by the grounding potential rise is given.

关 键 词：全封闭组合电器 电磁兼容 暂态地电位 接地网 

分 类 号：TM56[电气工程—电器]