降低站内无轨道电路区段不平衡牵引电流干扰问题探讨

Discussion on Reducing Interference of Unbalanced Traction Current in Sections without Track Circuits within Stations

在动车组的走行径路上,存在部分未设置轨道电路的区段,如动车所进站口附近的踏面检测设备处、客整所内存车线等。由于未设置轨道电路,无法监测钢轨线路的连接状态以及钢轨对地电阻。在不利条件下不平衡牵引电流中的高次谐波信号干扰动车组车载设备,甚至造成停车问题。本文通过现场测试和数据分析,确定两种案例造成动车组停车的原因,并提出采用优化牵引回流、降低谐波干扰的解决方案。

On the traveling route of the EMU,there are some sections without track circuits,such as the location of tread detection equipment near the entrance of an EMU station and the train lines used for storing trains in the passenger car servicing depot.Due to the absence of track circuits,it is not possible to monitor the connection status of rail lines and rail resistance to ground.Under unfavorable conditions,the high harmonic signal in unbalanced traction current disturbs the train-borne equipment of EMU and even causes the train to stop.Throughfield test and data analysis,this paper determines the reasons behind two cases of EMU stopping,and puts forward a solution to optimize the traction backflow and reduce harmonic interference.