编组站阶段计划与动态车流的耦合及调整研究

编组站的阶段计划在执行过程中,会受到车流波动的影响,衡量阶段计划与动态车流之间的耦合关系,并将车流波动控制在一定的范围,对车站调度工作具有重要意义。在车站阶段计划执行资源已确定的条件下,分析列车晚点时间、解体作业时间、编组作业时间的容许变动范围,给出车站阶段计划与动态车流耦合度的计算方法。当车流的变化超出容许范围时,在不改变原有解编顺序的基础上,对车流进行一定幅度的调配,以减小对车站整体作业的影响,并以此为目标建立优化模型。算例表明,车站阶段作业计划易受到达列车晚点、列车编组内容改变、解编作业晚点等因素的影响,进行适当的车流调配可在一定程度上提高阶段计划与动态车流的耦合度。

Coupling and Adjustment of Stage Plan and Dynamic Railcar Flow in Marshalling Station

The stage plan of marshalling station will be affected by the fluctuation of railcar flow in the process of implementation.A way to measure the coupling relationship between the stage plan and the dynamic railcar flow and to control the railcar flow in a certain range is very important for the dispatching operation of marshalling stations.The allowable variation ranges of train delay time,the break-up operation time and marshalling operation time were analyzed under the condition that the implementation resources of the station stage plan had been determined.Then the method of calculating the coupling degree between the station stage plan and the dynamic railcar flow was given.An optimization model was established to reduce the impact on the overall operation of a station when the change of railcar flow was beyond the allowable range,and railcar sources were adjusted without changing the original disassembling and marshalling sequence.The example shows that the station stage plan is susceptible to the factors such as the arrival time of train,the difference between the actual arrival of train and the expected arrival of train,and the fluctuation range of break-up operation time and marshalling operation time.The coupling degree between the stage plan and the dynamic railcar flow can be improved to a certain extent by reasonable railcar flow assignment.