基于隔日回库运营模式的城市轨道交通信号系统功能优化

Optimization of Urban Rail Transit Signaling System Functions Based on Alternate Day Depot Return Operation Mode

[目的]在隔日回库运营模式下,列车会正线过夜或日夜不间断运行,既有城市轨道交通信号系统相关功能已无法满足要求,需要进行优化。[方法]从信号系统的功能优化需求分析出发,详细阐述了车载列车自动控制子系统、轨旁列车自动控制子系统、列车自动监控子系统,以及信号设备自检监测业务等功能优化的场景需求及优化内容。[结果及结论]针对隔日回库运营模式,在车载列车自动控制子系统中增加了列车位置记忆功能,使正线过夜列车上电后能直接以信号系统受控模式投入运营;通过调整缓冲区设置来优化收敛在正线过夜的非通信列车防护包络,以避免影响其他正线列车的运行;优化后的列车自动监控子系统,既要能支持在线更换时刻表后列车计划的自动匹配,又要能支持跨日运行图。信号设备自检监测业务的功能优化,尽量延长了信号系统设备自检或重启的周期,能满足长时间不间断连续运行的需求。一系列信号系统的功能优化提升了信号系统的可用性,改善了服务水平。

[Objective]In the alternate day depot return operation mode,trains either stay overnight on the mainline or run continuously day and night.The relevant functions of existing urban rail transit signaling system can no longer meet the requirements,therefore needing an optimization.[Method]Starting with an analysis of the functional optimization needs of signaling system,the optimization scenarios and contents for the on-board ATC(automatic train control)subsystem,the trackside ATC subsystem,the ATS(automatic train supervision)subsystem,and the signaling equipment self-inspection/monitoring are elaborated in detail.[Result&Conclusion]For the alternate day depot return operation mode,the on-board ATC subsystem is enhanced with train position memory function,allowing overnight trains on the mainline to start directly upon powered on in the controlled mode of signaling system.By adjusting buffer zone settings,the convergence protection envelope is optimized for non-communication trains staying overnight on the mainline,to avoid impacting the operation of other mainline trains.The optimized ATS subsystem supports both the automatic schedule matching after online timetable changes and the cross-day operation schedules.The functional optimization of signaling equipment self-inspection work enables the extension of signaling system equipment self-inspection or reboot cycle,meeting the requirements for long-term continuous operation.The series of signaling system functional optimizations enhance the availability of signaling systems and improve the service levels.