ZPW-2000无绝缘轨道电路典型工频干扰问题分析与处置

Analysis and Disposal of Typical Power-line Interference of ZPW-2000 Jointless Track Circuit

ZPW-2000轨道电路是高速铁路主要信号设备。目前,根据高速铁路轨道电路运用环境,设备在可靠实现速度350km/h高速列车占用检查的同时,需系统解决工频牵引供电电流增大产生的谐波干扰。从两起典型案例入手,通过设备自身、结合部、变化点等排查方法,剖析轨道电路干扰问题,总结出路基石砟、牵引供电电缆等原因造成干扰问题的排查方法与思路。

ZPW-2000 track circuit is the main signaling equipment of high-speed railway.At present,according to the application environment of high-speed railway track circuit,the equipment needs to solve the harmonic interference caused by the increase of power frequency traction power supply current while reliably realizing the occupation detection of 350 km/h high-speed train.Starting from two typical cases,this paper analyzes the track circuit interference problems through the equipment itself,joint parts,change points and other troubleshooting methods,and summarizes the troubleshooting methods and ideas of interference problems caused by subgrade ballast and traction power supply cable.