Purpose–This paper aims to propose a train timetable rescheduling(TTR)approach from the perspective of multi-train tracking optimization based on the mutual spatiotemporal information in the high-speed railway signal...Purpose–This paper aims to propose a train timetable rescheduling(TTR)approach from the perspective of multi-train tracking optimization based on the mutual spatiotemporal information in the high-speed railway signaling system.Design/methodology/approach–Firstly,a single-train trajectory optimization(STTO)model is constructed based on train dynamics and operating conditions.The train kinematics parameters,including acceleration,speed and time at each position,are calculated to predict the arrival times in the train timetable.A STTO algorithm is developed to optimize a single-train time-efficient driving strategy.Then,a TTR approach based on multi-train tracking optimization(TTR-MTTO)is proposed with mutual information.The constraints of temporary speed restriction(TSR)and end of authority are decoupled to calculate the tracking trajectory of the backward tracking train.The multi-train trajectories at each position are optimized to generate a timeefficient train timetable.Findings–The numerical experiment is performed on the Beijing-Tianjin high-speed railway line and CR400AF.The STTO algorithm predicts the train’s planned arrival time to calculate the total train delay(TTD).As for the TSR scenario,the proposed TTR-MTTO can reduce TTD by 60.60%compared with the traditional TTR approach with dispatchers’experience.Moreover,TTR-MTTO can optimize a time-efficient train timetable to help dispatchers reschedule trains more reasonably.Originality/value–With the cooperative relationship and mutual information between train rescheduling and control,the proposed TTR-MTTO approach can automatically generate a time-efficient train timetable to reduce the total train delay and the work intensity of dispatchers.展开更多
针对干线铁路、城际铁路采用的中国列车控制系统(China train control system,CTCS)系统与城市轨道交通采用的基于通信的列车控制系统(communication based train control system,CBTC)系统互不兼容,阻碍四网融合发展和轨道交通系统整...针对干线铁路、城际铁路采用的中国列车控制系统(China train control system,CTCS)系统与城市轨道交通采用的基于通信的列车控制系统(communication based train control system,CBTC)系统互不兼容,阻碍四网融合发展和轨道交通系统整体运输效率低下的问题,对支持四网融合的列控系统的车载设备、地面设备、重叠区设计、制式切换过程等关键技术进行研究,具体包括列车自动防护技术、列车自动驾驶技术、人机接口技术、列车接口技术的一体化车载设备关键技术,支持列车跨线运行的重叠区地面设备关键技术,支持列车不停车安全、平滑切换制式的重叠区设计技术,并分析列车在重叠区内不停车从CTCS到CBTC制式的互相切换过程。研究结果表明:通过车载设备兼容地面设备实现跨线运行,可以减少地面设备数量,简化系统结构,提高系统安全性、可靠性和可维护性,且具有成本优势;采用一体化车载设备,系统结构简单,设备成本低,对安装空间要求较低,是未来技术的发展方向;提出的兼容CTCS和CBTC的列控系统关键技术可用于指导系统设计、研发和应用,对实现四网融合具有指导意义。展开更多
基金This research was jointly supported by the National Natural Science Foundation of China[Grant 62203468]the Young Elite Scientist Sponsorship Program by China Association for Science and Technology(CAST)[Grant 2022QNRC001]+1 种基金the Technological Research and Development Program of China Railway Corporation Limited[Grant K2021X001]by the Foundation of China Academy of Railway Sciences Corporation Limited[Grant 2021YJ043].On behalf all authors,the corresponding author states that there is no conflict of interest.
文摘Purpose–This paper aims to propose a train timetable rescheduling(TTR)approach from the perspective of multi-train tracking optimization based on the mutual spatiotemporal information in the high-speed railway signaling system.Design/methodology/approach–Firstly,a single-train trajectory optimization(STTO)model is constructed based on train dynamics and operating conditions.The train kinematics parameters,including acceleration,speed and time at each position,are calculated to predict the arrival times in the train timetable.A STTO algorithm is developed to optimize a single-train time-efficient driving strategy.Then,a TTR approach based on multi-train tracking optimization(TTR-MTTO)is proposed with mutual information.The constraints of temporary speed restriction(TSR)and end of authority are decoupled to calculate the tracking trajectory of the backward tracking train.The multi-train trajectories at each position are optimized to generate a timeefficient train timetable.Findings–The numerical experiment is performed on the Beijing-Tianjin high-speed railway line and CR400AF.The STTO algorithm predicts the train’s planned arrival time to calculate the total train delay(TTD).As for the TSR scenario,the proposed TTR-MTTO can reduce TTD by 60.60%compared with the traditional TTR approach with dispatchers’experience.Moreover,TTR-MTTO can optimize a time-efficient train timetable to help dispatchers reschedule trains more reasonably.Originality/value–With the cooperative relationship and mutual information between train rescheduling and control,the proposed TTR-MTTO approach can automatically generate a time-efficient train timetable to reduce the total train delay and the work intensity of dispatchers.
文摘针对干线铁路、城际铁路采用的中国列车控制系统(China train control system,CTCS)系统与城市轨道交通采用的基于通信的列车控制系统(communication based train control system,CBTC)系统互不兼容,阻碍四网融合发展和轨道交通系统整体运输效率低下的问题,对支持四网融合的列控系统的车载设备、地面设备、重叠区设计、制式切换过程等关键技术进行研究,具体包括列车自动防护技术、列车自动驾驶技术、人机接口技术、列车接口技术的一体化车载设备关键技术,支持列车跨线运行的重叠区地面设备关键技术,支持列车不停车安全、平滑切换制式的重叠区设计技术,并分析列车在重叠区内不停车从CTCS到CBTC制式的互相切换过程。研究结果表明:通过车载设备兼容地面设备实现跨线运行,可以减少地面设备数量,简化系统结构,提高系统安全性、可靠性和可维护性,且具有成本优势;采用一体化车载设备,系统结构简单,设备成本低,对安装空间要求较低,是未来技术的发展方向;提出的兼容CTCS和CBTC的列控系统关键技术可用于指导系统设计、研发和应用,对实现四网融合具有指导意义。
