客运专线列控中心对轨道电路分路不良的防护

轨道电路分路不良会导致信号显示和轨道电路码序升级,联锁关系失效,直接危及行车安全.客运专线列控中心利用现有设备所能提供的技术条件,采用软件处理的方法通过站间安全信息传输和轨道电路占用逻辑检查,对发生分路不良的区段做出判断,并选用HU码作为防护码序对后续轨道区段的编码进行控制,防止追踪列车意外闯入,有效降低了区间分路不良对行车安全的风险.

Preservation Measures Against Track Circuit Defective Shunting in Train Control Center of Dedicated Passenger Line

The track circuit defective shunting will result in upgrading the level of the signal aspect and the track circuit code.It can even make the interlocking invalid to threaten the operating train straight.In dedicated passenger line,the local train control center(TCC) makes use of the technology conditions which the existing equipments provided,it can communicate with the adjacent TCCs safely and estimate the train occupation logically based on the software,so that it can make a judgment of the track section in poor shunting and then prevents the following train from entering this track automatically by means of controlling the codes of the track circuits with HU as the defense code.In this way,it will reduce the risk resulting from the track circuit defective shunting efficiently and make the train operating more safely in the block.