Robust optimization of energy-efficient speed profile for normal high-speed maglev

被引：0

作者：

Chu P. ^{[1
,2
]}

Yuan J. ^{[1
]}

Chen Y. ^{[1
]}

机构：

[1] Maglev Transportation Engineering R&D Center, Tongji University, Shanghai

[2] Technology Center of Shanghai Shentong, Metro Group Co., Ltd, Shanghai

来源：

Journal of Railway Science and Engineering | 2023年 / 20卷 / 11期

关键词：

energy-efficient speed profile; high-speed maglev; mixed integer programming; rail transit; robust optimization;

D O I：

10.19713/j.cnki.43-1423/u.T20222367

中图分类号：

学科分类号：

摘要：

The optimization of train speed profiles is one of the important ways to save operating costs for rail transit. The robust optimization method is helpful to overcome the uncertainties in the process of energy-efficient speed profile acquisition. Aiming at the optimization of the energy-efficient speed profile for normal high-speed maglev trains, firstly, the section was divided into several segments. Then the stopping point stepping mechanism of train operation control, the resistance characteristics of train running process, maximum speed limit, requirements of ride comfort and running time at an interval. The uncertainty of train weight was included into the robust optimization model. The combining with three lemmas, the model was reconstructed as a mixed integer programming (MIP) problem with quadratic terms and an interval number. An algorithm was designed by combining the Gurobi solver and the robust optimization method based on the acceptable objective variation range. The effectiveness of the model and the algorithm was verified by a simulation study, and the influence of the train weight, running time and segment division on the energy consumption was analyzed. The results suggest that there is a difference between the pessimistic speed profile with the maximum train weight and the optimistic speed profile with the minimum train weight. It is necessary to consider the uncertainty of the train weight when optimizing train speed profiles. When the train weight is minimum and maximum, the energy consumption of the robust speed profile is 2.222% and 7.087% less than that of the pessimistic and optimistic speed profile, respectively. In most cases, the robust speed profile can overcome the conservative characteristics of pessimistic speed profile. Relaxing the requirement on running time will reduce the energy consumption. The proposed method can provide an effective way to obtain the energy-efficient speed profile for normal high-speed maglev, and also has a useful guideline to the optimization of train speed profile for rail transit systems with other types. © 2023, Central South University Press. All rights reserved.

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页码：4062 / 4073

页数：11

共 28 条

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