Research on Energy-Saving Operation Strategy for Multiple Trains on the Urban Subway Line

Jianqiang Liu,Nan Zhao

doi:10.3390/en10122156

Abstract

Energy consumption for multiple trains on the urban subway line is predominantly affected by the operation strategy. This paper proposed an energy-saving operation strategy for multiple trains, which is suitable for various line conditions and complex train schedules. The model and operation modes of the strategy are illustrated in detail, aiming to take full use of regenerative braking energy in complex multi-train systems with different departure intervals and dwell times. The computing method is proposed by means of the heuristic algorithm to obtain the optimum operation curve for each train. The simulation result based on a real urban subway line is provided to verify the correctness and effectiveness of the proposed energy-saving operation strategy.

Highlights

Energy consumption of public transportations is highly concerning due to the global energy crisis.Urban subway, acting as an essential part of public transportation, is rapidly becoming a hot research area for the energy-saving strategy under complex operating environments and various influences.Recently, with the development of energy-saving research, the focus of the research has been transferred from a single train to multi-train system
The novelty of this paper is that the proposed strategy can take full use of the regenerated energy, and the algorithm of computing method is easy that can be calculated both online and offline, at the same time all the constraints such as line conditions, velocity limitation and moving automatic block system can be considered
The paper introduced the previous research on the single train and two-train system combined with a real example (Beijing Subway Line 4)

Summary

Introduction

Energy consumption of public transportations is highly concerning due to the global energy crisis.Urban subway, acting as an essential part of public transportation, is rapidly becoming a hot research area for the energy-saving strategy under complex operating environments and various influences.Recently, with the development of energy-saving research, the focus of the research has been transferred from a single train to multi-train system. Urban subway, acting as an essential part of public transportation, is rapidly becoming a hot research area for the energy-saving strategy under complex operating environments and various influences. The operation strategy and the driving curves with specific line and dispatch constraints are mainly concerned with the single-train energy-saving research. Energy consumption of urban subway has been highly concerning, and the energy-saving operation strategies of the single train and two-train system have been studied by us for a while. Previous research results on the single train and two trains are introduced as the fundamental of multi-train system research, and the deficiencies of the study are illustrated. To make the illustration clear, an example of the multi-train system based on Beijing Subway Line 4 is introduced. The example has the same kinds of constraints as other urban lines, so it has universal significance and can be replaced by any other urban line

Methods

Results

Conclusion