牵引变电所馈线故障判断装置的应用

研究目的:当供电线发生永久故障情况时,不仅牵引变电所馈线侧自动重合闸会失败,还会给变电所高压设备带来较大的电流冲击,缩短高压电器设备的使用寿命。研究结论:(1)牵引变电所馈线故障判断装置能够对故障线路的故障性质(永久故障或瞬时故障)进行自动测量判别;(2)测量结果对馈线保护自动重合闸装置实施选择性闭锁,能有效地避免在接触网发生永久故障下自动重合闸的盲目性。

Application of the Feeder Fault Judge Equipment in Traction Substation

Research purposes:When the power line with permanent fault,not only the automatic reclosing of the feeder circuit breaker will fail,but also will bring a greater current impact to the high-voltage equipment of substation and shorten the service life of these devices. Research conclusions:Traction substation feeder fault judge equipment can measure and judge the fault types(permanent failure or transient failure) automaticlly.According to measurements of selective blocking on the auto-recloser automatics,avoid the blindness of the automatic reclosing action when the catenary with permanent fault.