基于动力学特性的列车运行态势分析

Train Operation Analysis Based on Dynamics

针对区间临时限速下的列车运营场景,提出考虑列车动力学特性的列车运行态势分析方法。建立临时限速区域下区间运行时分、运行速度和追踪列车间隔时间等列车运行约束,根据列车最大牵引和最大制动特性,计算在限速区间的运行时分,以及在站内限速、无限速和临时限速3个区域边界点的速度和时间等列车运行态势信息。分析晚点时间与区间缓冲时间,以及发生晚点时列车当前速度与最大制动曲线下速度之间的关系,预测列车到达前方车站的时刻和晚点时间。仿真结果表明,针对不同临时限速等级,根据列车最大牵引和最大制动特性计算得到的列车速度曲线和运行线,可以为调度员提供列车在限速区间的速度和时间等列车运行态势信息。

Aiming at the train operation scenarios under temporary speed restriction in an interval, the paper proposed an operation analysis approach considering train dynamics. Firstly, train operation constraints were put, including inter-interval running time, running speed, and the time interval between trains spaced by automatic block signals in an area with a temporary speed restriction. According to the train’s maximum traction and braking characteristics, the paper calculated the running time in the interval with speed restriction and the running speed and time at boundary points among three regions, which are subject to speed restriction at stations and temporary speed restriction and free of restriction, respectively. Then the delay and interval recovery time were analyzed, and the relationship between the current train speed and the speed under the maximum braking curve was also considered when the delay occurred. On this basis, the arrival and delay time of the train at the front station was predicted. The simulation results show that with different temporary speed restrictions, the vehicle speed curve and running line are derived under the condition of maximum traction and braking characteristics. The research can provide dispatchers with information about the operational situation including train speed and time in the interval with a speed restriction.