LAPSE:2019.0565
Published Article
LAPSE:2019.0565
Energy-Efficient Train Driving Strategy with Considering the Steep Downhill Segment
Wentao Liu, Tao Tang, Shuai Su, Jiateng Yin, Yuan Cao, Cheng Wang
May 16, 2019
Implementation of energy-efficient train driving strategy is an effective method to save train traction energy consumption, which has attracted much attention from both researchers and practitioners in recent years. Reducing the unnecessary braking during the journey and increasing the coasting distance are efficient to save energy in urban rail transit systems. In the steep downhill segment, the train speed will continue to increase without applying traction due to the ramp force. A high initial speed before stepping into the steep downhill segment will bring partial braking to prevent trains from overspeeding. Optimization of the driving strategy of urban rail trains can avoid the partial braking such that the potential energy is efficiently used and the traction energy is reduced. This paper presents an energy-efficient driving strategy optimization model for the segment with the steep downhill slopes. A numerical method is proposed to calculate the corresponding energy-efficient driving strategy of trains. Specifically, the steep downhill segment in the line is identified firstly for a given line and the solution space with different scenarios is analyzed. With the given cruising speed, a primary driving strategy is obtained, based on which the local driving strategy in the steep slope segment is optimized by replacing the cruising regime with coasting regime. Then, the adaptive gradient descent method is adopted to solve the optimal cruising speed corresponding to the minimum traction energy consumption of the train. Some case studies were conducted and the effectiveness of the algorithm was verified by comparing the energy-saving performance with the classical energy-efficient driving strategy of “Maximum traction⁻Cruising⁻Coasting⁻Maximum braking„.
Keywords
energy-efficient driving strategy, local optimization, rail transit, steep downhill segment, train control
Suggested Citation
Liu W, Tang T, Su S, Yin J, Cao Y, Wang C. Energy-Efficient Train Driving Strategy with Considering the Steep Downhill Segment. (2019). LAPSE:2019.0565
Author Affiliations
Liu W: State Key Laboratory of Rail Traffic Control and Safety, Beijing Jiaotong University, Beijing 100044, China; School of Electronic and Information Engineering, Beijing Jiaotong University, Beijing 100044, China
Tang T: State Key Laboratory of Rail Traffic Control and Safety, Beijing Jiaotong University, Beijing 100044, China; School of Electronic and Information Engineering, Beijing Jiaotong University, Beijing 100044, China
Su S: State Key Laboratory of Rail Traffic Control and Safety, Beijing Jiaotong University, Beijing 100044, China; National Engineering Research Center of Rail Transportation Operation and Control System, Beijing Jiaotong University, Beijing 100044, China
Yin J: State Key Laboratory of Rail Traffic Control and Safety, Beijing Jiaotong University, Beijing 100044, China
Cao Y: School of Electronic and Information Engineering, Beijing Jiaotong University, Beijing 100044, China; National Engineering Research Center of Rail Transportation Operation and Control System, Beijing Jiaotong University, Beijing 100044, China
Wang C: School of IoT Engineering, Jiangnan University, Wuxi 214122, China
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Journal Name
Processes
Volume
7
Issue
2
Article Number
E77
Year
2019
Publication Date
2019-02-03
Published Version
ISSN
2227-9717
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PII: pr7020077, Publication Type: Journal Article
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LAPSE:2019.0565
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doi:10.3390/pr7020077
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May 16, 2019
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May 16, 2019
 
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Calvin Tsay
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