10kV户外SF_6断路器、重合器、分段器与跌落式熔断器在城网架空线的配合应用

根据国内外资料统计，在10kV城网架空线系统中，95％以上的故障是瞬时故障。采用户外SF_6断路器，以及自动重合器、自动分段器与跌落式熔断器配合（组成“自动配电网”）使用，就能最大限度地避免用户故障或线路瞬时故障造成的停电事故，大大提高10kV配电网的连续供电可靠性。在此基础上，探索以国产化的馈线自动化高压开关和FTU实现配网自动化的可行性。

Statistics at home and abroad indicate that over 95% of the overhead line system faults in10 kV urban networks are transient faults. The coordinated application of the outdoor SF_6 circuitbreaker, automatic recloser, automatic sectionalizer and drop-out fuse, which constitute the automatic distribution network, can minimize service interruptions arising from customer faults or transientline faults and considerably enhance the continuous power supply reliability of 10 kV distribution network. The feasibility of using domestic feed line automation HV switches and FTU to realize distribution network automation is discussed as well.