Simulation and analysis of optimal energy-saving mode in microfield of underground rail transit

Shuang Wu; Yunlan  Chen; Xin  Lin

doi:10.61089/aot2024.hc8s5k97

Authors

Shuang Wu Department of Transportation Engineering, Yangzhou Polytechnic Institute, Yangzhou, China Author https://orcid.org/0009-0006-6406-6510
Yunlan Chen School of Transportation, Jilin Railway Technology College, Jilin, China Author https://orcid.org/0009-0003-2415-3095
Xin Lin Department of Transportation Engineering, Yangzhou Polytechnic Institute, Yangzhou, China Author https://orcid.org/0009-0003-7642-6454

DOI:

https://doi.org/10.61089/aot2024.hc8s5k97

Keywords:

Underground rail transit, Field theory, Automatic train driving, Energy-saving model

Abstract

Underground rail transit has become one of the most popular transportation modes because of its advantages such as fast running speed, large passenger flow and punctuality. This mode of transportation can alleviate urban traffic congestion to a certain extent, so underground rail transit has been vigorously developed, and the number of rail lines has increased exponentially. However, with the continuous development of underground rail transit, the energy consumption of train operation is also increasing, resulting in a waste of energy. To solve this problem, this paper proposes to improve the energy-saving technology of train operation by using train autopilot control strategy. Firstly, a train operation optimization model considering train position and speed limit is established by using automatic train driving strategy, and the nonlinear problem of the optimization model is solved by genetic algorithm. The micro-field theory is introduced into the control strategy of automatic train driving, and the energy-saving model of underground rail transit is established. The energy consumption is optimized from three aspects: train energy-saving technology, line planning and overall operation planning of rail transit. The simulation results show that the average impact rate and energy consumption of trains under the proposed energy-saving model are significantly reduced compared with the other two groups of trains, and the average impact rate and energy consumption are significantly reduced compared with the other two groups of trains. The running time and energy consumption of the energy-saving model are lower than those of the experimental group. To sum up, the energy-saving model of underground rail transit proposed in this paper not only reduces the operating energy consumption, but also improves the passenger comfort, which can provide low-cost energy-saving technology for underground transportation field, and has positive significance for urban low-carbon development.

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