FA4—500型断路器合、切500kV葛凤空载长线试验结果分析

切合空载长线是断路器的基本功能之一。本文对葛凤线切合空载长线试验的过电压实测结果进行统计分析。试验结果表明:当线路首、末端均接入并联电抗器后,断路器分闸无重燃、复燃。采用100Ω合闸电阻后,合闸过电压不超过1.3倍。

Analysis of the Test Results of Switchig 500kV Gefeng No-load Line by Circuit Breaker Type FA4-500

Switching no-load Power line is one of the operating duties for circuit breaker.This PaPer gives statistical analysis of overvoltage results of field test on switching 500kV Gezhouba-Feng-huangshan no-load Power line.Test results show that when both Gezhouba and Fenghuangshan substatons are connected with shunt reactors, circuit breaker is restrike free.When the circuit breaker is equipped with closing resistance, overvoltage is loss than 1·3 times.