500kV变电站断路器雷电过电压仿真研究  

Simulation Research on Lightning Overvoltage of Circuit Breaker in 500 kV Substation

作　　者：靳彦辉 郝竹筠[2] 刘宸[2] 于万祥[3] 

机构地区：[1]国网长春供电公司,长春130021 [2]国网吉林省电力有限公司电力科学研究院,长春130021 [3]国网吉林省电力有限公司培训中心,长春130062

出　　处：《吉林电力》2015年第3期45-47,共3页Jilin Electric Power

摘　　要：以500kV变电站为研究对象,采用电磁暂态计算程序EMTP,针对站内断路器处于断开状态的情况,对500kV变电站受雷电侵入波产生的过电压进行了仿真校核计算。根据仿真校核结果,断路器在断开状态时的绝缘强度存在不足,通过采取在非完整串距断路器5m远处加装避雷器、在非完整串的进线段加装线路避雷器等措施,经过仿真计算,使变电站的防雷能力得到明显提高。Overvoltage caused by Lightning invasion wave in 500 kV Substation was simulated by EMTP while the circuit breaker is in off state. Simulation showed that the dielectric strength was insufficient while the circuit breaker is off. Installing attester to 5 meters from circuit breaker and incoming lines of ncomplete string can obviously improve the lightning protection ability of substation

关 键 词：500 KV变电站 断路器 防雷 EMTP 

分 类 号：TM863[电气工程—高电压与绝缘技术] TM63