摘要
本文对浙江北—兰5403线在北仑港侧不装合闸电阻情况下合闸（重合闸）线路时的过电压进行了研究，分析了实测结果及运行情况，还计算和讨论了在目前500kV线路绝缘水平下其操作过电压可允许高于2.0pU。并指出输电线路在一定长度范围内，可以取消合闸电阻，而仅用MOA来限制操作过电压。
The switching surge overvoltage caused byswitching-on(reclosing) a 5OOkV transmission line is analyzedwhen the closing resistor for circuit breaker at 0ne end of thistransmission line is eliminated. On the basis of calculation it isput forward that under the present insulation condition for5OOkV transmission line the swltching-surge overvoltagehigher than 2. O p. u. is permissible. In a certain range oflength of transmission line the c1osing resistor can be eliminat-ed and the switching-surge overvoltage can be reduced byMOA on1y.
出处
《电网技术》
EI
CSCD
北大核心
1997年第12期8-11,共4页
Power System Technology
