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首页> 外文期刊>Transportation research, Part B. Methodological >Multi-train trajectory optimization for energy efficiency and delay recovery on single-track railway lines
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Multi-train trajectory optimization for energy efficiency and delay recovery on single-track railway lines

机译：多列车轨迹优化，提高单轨铁路线的能源效率和延迟恢复

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This paper proposes a novel multi-train trajectory optimization for single-track lines. We restrict our attention to delay cases aiming at finding optimal speed profiles, which reduce delays and save energy consumption. A multi-train trajectory optimization method is proposed to find optimal meeting locations, arrival/departure times, and speed trajectories of multiple trains within the time and speed windows. The proposed method first finds timetable constraint sets for trains under delayed situations. The timetable constraint sets provide drivable, feasible, and energy-efficient time and speed windows along the trains' routes. The multi-train trajectory optimization method uses minimizing energy consumption and reducing delays as the objective functions, and takes into account each train's operational constraints as well as constraints to avoid conflicts between adjacent trains. Three driving strategies of delay-recovery, energy-efficient and on-time driving, are proposed and combined in the optimization objective selection for different delay scenarios. The multi-train trajectory optimization is formulated as a multiple-phase optimal control problem and solved by a pseudospectral method. The proposed method is applied in case studies of opposite trains running on a Dutch single-track railway corridor with different initial delay scenarios. The results show that our method is able to produce a feasible schedule with energy-efficient speed trajectories for all interacting trains. (C) 2017 Elsevier Ltd. All rights reserved.
机译：该文提出了一种新的单轨线路多列车轨迹优化方法。我们将注意力限制在旨在找到最佳速度曲线的延迟案例上，从而减少延迟并节省能源消耗。提出一种多列车轨迹优化方法，在时间和速度窗口内寻找多列列车的最佳集合地点、到达/出发时间和速度轨迹。该方法首先找到了晚点情况下列车的时间表约束集。时刻表约束集在列车路线上提供了可驾驶、可行且节能的时间和速度窗口。多列车轨迹优化方法以最小化能耗和减少延误为目标函数，并考虑了每列列车的运行约束以及避免相邻列车之间冲突的约束。针对不同延迟场景，提出延迟恢复、节能和准时驾驶3种驱动策略，并将其组合在优化目标选择中。将多列车轨迹优化表述为多相最优控制问题，并采用伪谱方法求解。该方法应用于在荷兰单轨铁路走廊上运行的具有不同初始延迟情景的对面列车的案例研究。结果表明，该方法能够为所有相互作用的列车产生具有节能速度轨迹的可行时间表。（C） 2017 爱思唯尔有限公司保留所有权利。

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