Virtual coupling can shorten train separation and is recognized as a promising solution to the problem of capacity limits on railway network. However, as train separation decreases, the impact of speed trajectories between adjacent trains becomes more significant. Inappropriate speed trajectories, either of the leading or following trains, will affect the convoy's operational performance. Hence, this paper investigates the cooperative speed trajectory optimization problem for the leading and following trains in a convoy. Firstly, a resilience adjustment mechanism is proposed to define the driving strategy of trains under virtual coupling. Then, a multi-objective optimization model for the cooperative operation of trains is designed with energy and capacity consumption as the optimization objectives. On this basis, a novel double loop seeker optimization algorithm is presented to find the solution of the proposed model, that is to optimize the speed trajectories of the leading and following trains simultaneously rather than separately. Finally, numerical experiments using the real data from a high-speed railway line in China are performed to demonstrate the effectiveness of our proposed method.
Multi-Objective Speed Trajectory Optimization for Cooperative Operation of High-Speed Trains Under Virtual Coupling
2024-09-24
1691175 byte
Conference paper
Electronic Resource
English
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