轨道电路大修后接收电压降低原因分析

Causation Analysis of Decrease in Receiving Voltage after Overhaul of Track Circuit

针对FTGS-917型轨道电路轨旁设备大修后,由于原并联谐振点发生偏移,导致的轨道电路接收电压降低,以及在室内板件轮换后,因板件可调元件参数发生了变化,导致输出电压降低等问题,进行了深度分析,以便于为该类型的轨道电路维修工作提供相关技术指导,同时也为其他地铁线路维修时出现相似情况做理论参考。

After the overhaul of the trackside equipment of the FTGS-917 track circuit, the ottset of the original parallel resonance point will lead to a decrease in the receiving voltage of the track circuit. In addition, the output voltage will be reduced because of the changes of the parameters of the adjustable components after the rotation of indoor circuit boards. An in-depth analysis is made to offer related technical guidance and to facilitate the maintenance work for this type of track cir- cuit. Otherwise, it also offer a theoretical reference for the maintenance of other subway in simi- lar situation.