石南 500kV 变电所断路器取消合闸电阻的可行性分析

Feasibility Study for Removing Closing Resistance of Circuit Breaker in 500 kV Shinan Substation

依据国内其他网局５００ｋＶ断路器的安装使用情况，分析了断路器安装合闸电阻弊大于利的原因。通过对系统的工频过电压和操作过电压的计算，对石南５００ｋＶ变电所断路器取消合闸电阻的可行性进行了论证。

Based on the installation and operation experiences of the 500kV circuit breakers in other power networks in China, analysis shows that the circuit breaker with closing resistors is more harmful than beneficial. Through calculating the fundamental frequency and transient overvoltage of the system, this paper discusses the feasibility of removal of the closing resistors of 500 kV circuit breaker in Shinan substation.