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K. Sakai, W. Ohnishi, T. Koseki, "Simultaneous Optimisation of Energy-Efficient Speed Profiles of Two Trains by Parallel Dynamic Programming", in J. Pombo, (Editor), "Proceedings of the Sixth International Conference on Railway Technology: Research, Development and Maintenance", Civil-Comp Press, Edinburgh, UK, Online volume: CCC 7, Paper 10.4, 2024, doi:10.4203/ccc.7.10.4

Keywords: direct current electric railway, energy-efficient driving, regenerative braking energy, speed profile, dynamic programming, parallel computing.

Abstract

Energy-saving methods for electric railways by modifying driving methods have been proposed for carbon neutrality. In a direct current electric railway network, regenerative energy from a braking train needs to be consumed by another powering train to avoid wasting kinetic energy. The aim of this paper is to propose a dynamic programming method with parallel computing that solves large-scale optimisation problems for the speed profiles of two trains considering regenerative energy. The numerical evaluation results show that simultaneous optimisation can reduce total energy consumption by using regenerative energy. They suggest that it is effective to optimise the train receiving regenerative energy. The advantage of dynamic programming is that its solution follows causality even when a train operation is disturbed.

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Front Page Browse CCC CCP CSETS CTR IJRT Other Authors Search Purchase Guide FAQ Contact us	Civil-Comp Conferences ISSN 2753-3239 CCC: 7 PROCEEDINGS OF THE SIXTH INTERNATIONAL CONFERENCE ON RAILWAY TECHNOLOGY: RESEARCH, DEVELOPMENT AND MAINTENANCE Edited by: J. Pombo Paper 10.4 Simultaneous Optimisation of Energy-Efficient Speed Profiles of Two Trains by Parallel Dynamic Programming K. Sakai, W. Ohnishi and T. Koseki Department of Electrical Engineering and Information Systems, The University of Tokyo, Japan doi:10.4203/ccc.7.10.4 Full Bibliographic Reference for this paper K. Sakai, W. Ohnishi, T. Koseki, "Simultaneous Optimisation of Energy-Efficient Speed Profiles of Two Trains by Parallel Dynamic Programming", in J. Pombo, (Editor), "Proceedings of the Sixth International Conference on Railway Technology: Research, Development and Maintenance", Civil-Comp Press, Edinburgh, UK, Online volume: CCC 7, Paper 10.4, 2024, doi:10.4203/ccc.7.10.4 Keywords: direct current electric railway, energy-efficient driving, regenerative braking energy, speed profile, dynamic programming, parallel computing. Abstract Energy-saving methods for electric railways by modifying driving methods have been proposed for carbon neutrality. In a direct current electric railway network, regenerative energy from a braking train needs to be consumed by another powering train to avoid wasting kinetic energy. The aim of this paper is to propose a dynamic programming method with parallel computing that solves large-scale optimisation problems for the speed profiles of two trains considering regenerative energy. The numerical evaluation results show that simultaneous optimisation can reduce total energy consumption by using regenerative energy. They suggest that it is effective to optimise the train receiving regenerative energy. The advantage of dynamic programming is that its solution follows causality even when a train operation is disturbed. download the full-text of this paper (PDF, 12 pages, 617 Kb) go to the previous paper go to the next paper return to the table of contents return to the volume description
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