摘要
根据在暂态网络分析仪(TNA)上对国内50多条500kV输电线路所做的电磁暂态研究结果,本文分析了断路器装设或不装设合闸并联电阻时,正常及故障操作过电压下,线路两端金属氧化物避雷器保护过电压的性能和避雷器的工况。文中还提出,用金属氧化物避雷器作为500kV线路操作过电压的主保护,本身裕度很大。
. According to the transient studies completed on TNA for more than 50 500kV transmission lines of China, the switching surge protection performance and operating conditions of MOA located at the both end of transmission line with circuit breakers with or without closing resistors during the normal or fault conditions are an-ralyzied in this paper. The MOA is reliable enough as a main swith-ing surge protection device of transmission line in these cases.
出处
《电网技术》
EI
CSCD
北大核心
1990年第4期40-45,共6页
Power System Technology
