高铁ZPW-2000A轨道电路小轨道的调整与特征分析

Adjustment and Characteristic Analysis of Small Rail of ZPW-2000A Track Circuit for High Speed Railway

为了解决小轨道电气断离检查盲区,实现钢轨全程电气断离检查,高铁中将小轨道纳入安全控制,小轨道需要重新调整。分析小轨道原理,解释小轨道与主轨道调整方法的差异,计算分析并接收器断线后对于小轨出电压的影响以及规律。

In order to solve the problem of blind spot of broken rail electrical characteristics check for small rail and realize the broken rail electrical characteristics check for the whole rail,the small rail will be included in safety control of high-speed rail,and the small rail needs to be readjusted.By analyzing the principle of the small rail,this paper explains the diff erence between the adjustment methods of the small rail and the main rail,and calculates and analyzes the infl uence and law on the small rail output voltage after disconnection of the parallel standby receiver.