SF_6断路器,是利用SF_6气体作为绝缘介质和灭弧介质的新型高压断路器,近年来在电力系统已得到了广泛的应用。葛洲坝220 kV开关站经过4年时间将原空气断路器改造为SF_6断路器,新设备运行稳定,检修维护工作量大为降低,改造取得了良好效果,实现了断路器改造预期目标。 SF_6 circuit breaker is a new type of high voltage circuit breaker using SF_6 gas as insulation medium and interrupter medium. In recent years, SF_6 circuit breaker has been widely used in power system. Gezhouba 220 kV switch station after four years the original air circuit breaker into SF_6 circuit breaker, the new equipment stable operation, maintenance and repair workload greatly reduced, the transformation has achieved good results, to achieve the desired goal of circuit breaker transformation.