地铁信号系统转换轨特殊情况设置存车功能分析

Analysis of Setting Storage Function for Transfer Track in Subway Signal System Under Special Circumstances

地铁列车在转换轨出入车辆段时,通常会有CBTC模式和非CBTC模式之间的驾驶模式转换。在列车从车辆段进入转换轨或者从转换轨回到车辆段过程中,列车降级为非CBTC驾驶模式后,信号系统将为该列车增加非通信移动授权和逻辑缓冲区域防护,若转换轨与正线车站距离过近,将对正线列车正常进站造成影响。通过分析相关的运营场景,提出转换轨存车方案,包括限制非通信防护移动授权的蔓延、优化影响运营的逻辑缓冲区段,以及检查相关进路建立和信号开放条件等,规避了安全风险,为各城市CBTC信号系统转换轨存车提供参考。

When subway trains enter and exit the depot of the transfer tracks,there is usually a driving mode transition between CBTC mode and non-CBTC mode.When the train is downgraded to non-CBTC driving mode in the process of entering the transfer track from the depot or returning to the depot from the transfer track,the signal system will increase the non-communication movement authorization and logical buffer zone protection for the train.If the transfer track is too close to the main line station,the normal entry of the main line train will be affected.By analyzing the relevant operation scenarios,this paper provides a scheme for storing cars on the transfer tracks,including limiting the spread of non-communication protection movement authorization,optimizing the logical buffer sections that affect the operation,and checking the establishment of relevant routings and signal opening conditions,etc.,so as to avoid safety risks and provide a reference scheme for the storage of transfer tracks design of CBTC signal system in various cities.