关于高速铁路一体化轨道电路股道安全提升的探讨

Discussion on Improving Safety of Station Tracks Equipped with Integrated Track Circuits of High-speed Railways

目前国内高速铁路站内普遍采用与区间同制式的ZPW-2000型一体化轨道电路,部分车站股道采用一段轨道电路构成。当车站办理接车后,股道的轨道电路发送端将迎着列车进行发码为列车提供地面信息。如果列车在本站停稳并进行折返换端,当出站信号未开放时,列车将可能错误收到临线轨道电路发送的信息,造成列车错误发车从而引发安全问题。提出新增外部继电电路方法,通过电路逻辑判断出列车进/出股道的时机,给出具体的列车尾部补码措施,从而满足列车进入股道后即可实现双端发码以解决问题。此方案仅在室内增加少量继电器,无室外工程量、无需更改列控软件,且可针对车站个别股道单独改造,改造过程易实施、对运输影响极小。可为高速铁路站内股道采用一体化轨道电路安全防护提升的解决思路提供参考。

At present,the ZPW-2000 integrated track circuits with the same standard as those used in the sections are widely used in China's high-speed railway stations,and the platform tracks in some stations adopt one-section track circuits.When the train is received at the station,the sending end of the track circuit of the platform track will face the train and send codes to provide trackside information for the train.If the train comes to a complete stop at the station and changes its direction by activating the cab on the intended end,when the starting signal is not at clear,the train may mistakenly receive the information sent by the track circuit of the adjacent line,and the train will depart from the station incorrectly,resulting in safety problems.In this paper,the method of adding an external relay circuit is proposed,and the timing of the train entering and leaving the platform track is determined by the circuit logic,and the concrete measure for applying train tail complementary code is provided,so that the double-end code sending can be realized after the train enters the track to solve the aforementioned problems.This solution only adds a small number of relays indoors,has no outdoor workload,does not need to change the train control software,and can be adapted to suit individual platform tracks of the station.The adaptation process is easy to implement and has minimal impact on transportation.This scheme can provide reference for the solution of safety protection enhancement for platform tracks equipped with integrated track circuits in high-speed railway stations.