TY - GEN
T1 - Virtual-coupling operation for high-speed rail based on following- train speed profile optimization
AU - Xu, Bin
AU - Wu, Chaoxian
AU - Lu, Shaofeng
AU - Xue, Fei
N1 - Funding Information:
This research project is supported and sponsored in part by 2016 NSFC Young Scientist Program Project NO. 61603306 and in part by the Research Development Fund RDF-16-01-42 at Xi’an Jiaotong-Liverpool University Bin Xu is with the Department of Electrical and Electronic Engineering, Xi’an Jiaotong-Liverpool University, China and the School of Electrical and Computer Engineering, Cornell University, USA., 14853-5401; (Email: bx83@cornell.edu) Chaoxian Wu is with the Shien-Ming Wu School of Intelligent Engineering, South China University of Technology, China, the Department of Electrical Engineering and Electronics, University of Liverpool, UK and the Department of Electrical and Electronic Engineering, Xi’an Jiaotong-Liverpool University, China (Email: Chaoxian.Wu@liverpool.ac.uk) Shaofeng Lu is with the Shien-Ming Wu School of Intelligent Engineering, South China University of Technology, China (Email: lushaofeng@scut.edu.cn) Fei Xue is with the Department of Electrical and Electronic Engineering, Xi’an Jiaotong-Liverpool University, China, 215123; (Email: Fei.Xue@xjtlu.edu.cn) Fig. 1. The four generations of railway signaling system: where Strain is the train separation, ds is the safety margin, b1, b2 is the braking distance of the leading/following train, a) fixed block signaling system; b) moving block signaling with an absolute braking distance (Strain−b2 ≥ ds); c) moving block signaling with a relative braking distance (Strain + b1 − b2 ≥ ds); d) virtual coupling (Strain ≥ ds).
Publisher Copyright:
© 2021 IEEE.
PY - 2021/7/11
Y1 - 2021/7/11
N2 - With the increasing railway transportation demands, railway operators need to enhance the capacity in high traffic corridors to improve transportation efficiency. The establishment of the concept 'virtual coupling (V C)' provides an effective method for achieving higher capacity. The core idea is to reduce the train separation and to enable a maximized number of trains on the track. Based on the emerging modern communication techniques, the synchronous operation between different trains to form the coupled state can be achieved without any physical connection. In this paper, a following-train speed profile optimization model is proposed by employing Mixed Integer Linear Programming (MILP) approach to achieving V C with the leading train. Therefore, the safety constraints (i.e. moving block signaling (MBS)) are considered as the most important physical border between each train under the VC operation. Three cases under different scenarios are conducted on a generic high-speed rail, which proves the effectiveness of the proposed method on the speed profile optimization for following trains under the V C operation. It also shows the factors influencing the time headway under minimized -separation operations.
AB - With the increasing railway transportation demands, railway operators need to enhance the capacity in high traffic corridors to improve transportation efficiency. The establishment of the concept 'virtual coupling (V C)' provides an effective method for achieving higher capacity. The core idea is to reduce the train separation and to enable a maximized number of trains on the track. Based on the emerging modern communication techniques, the synchronous operation between different trains to form the coupled state can be achieved without any physical connection. In this paper, a following-train speed profile optimization model is proposed by employing Mixed Integer Linear Programming (MILP) approach to achieving V C with the leading train. Therefore, the safety constraints (i.e. moving block signaling (MBS)) are considered as the most important physical border between each train under the VC operation. Three cases under different scenarios are conducted on a generic high-speed rail, which proves the effectiveness of the proposed method on the speed profile optimization for following trains under the V C operation. It also shows the factors influencing the time headway under minimized -separation operations.
UR - https://www.scopus.com/pages/publications/85118853231
U2 - 10.1109/IV48863.2021.9575826
DO - 10.1109/IV48863.2021.9575826
M3 - Conference Proceeding
AN - SCOPUS:85118853231
T3 - IEEE Intelligent Vehicles Symposium, Proceedings
SP - 1249
EP - 1254
BT - 32nd IEEE Intelligent Vehicles Symposium, IV 2021
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 32nd IEEE Intelligent Vehicles Symposium, IV 2021
Y2 - 11 July 2021 through 17 July 2021
ER -