25Hz轨道电路原理与故障分析

Principle and Fault Analysis of 25 Hz Track Circuit

轨道电路作为监督轨道线路空闲、反映列车运行情况的重要信号设备,25 Hz轨道电路在运用中,易受器材特性变化,外界环境干扰等导致的轨道电路红光带故障,尤其是轨道电路闪红故障应急处置难度大,对正常运输秩序干扰极大。就如何处理25Hz轨道电路故障进行简要分析和探讨,充分运用监测调看分析结合移频表运用,采用电压法与电流法相结合的方式,快速有效的处置轨道电路红光带故障。

The track circuit is one of the important signaling equipment to monitor the idle rail line and refl ect the train operation.In application of 25 Hz track circuit,the red light strap fault,especially the fl ashing red fault,which is easily aff ected by the change of the equipment characteristics and the interference of the external environment,is very diffi cult to deal with in an emergency,and interferes greatly with the normal transportation order.This paper makes an analysis and discussion on how to deal with the faults of 25 Hz track circuit,making full use of monitoring,adjustment and analysis combined with frequency shift meter,and adopting the method of combining voltage method with current method to rapidly and eff ectively handle the red light strap fault in track circuit.