Study on Heavy-Loaded Locomotive Schedule of Da-qin Railway

DOI

10.2991/iccet-15.2015.66How to use a DOI?

Keywords

Locomotive Schedule; Heavy-loaded Transportation; Da-qin Railway; Optimization

Abstract

The main difference between locomotive schedule of heavy-loaded railway and that of regular rail transport is the number of locomotives utilized for one train. One heavy-loaded train usually has more than one locomotive, but a regular train just has one locomotive. Based on analysis of the current locomotive schedule in Da-qin Railway, this paper develops an optimization model for multi-locomotives scheduling problem. The objective function of the proposed model is the minimization of total number of utilized locomotives. The optimization model for multi-locomotives scheduling is the non-deterministic polynomial hard problem. Therefore, we convert multi-locomotive traction problem into single-locomotive traction problem. Then, the single-locomotive traction problem can be converted into assignment problem. Hungarian algorithm is the one of best choices to solve the model and obtain the locomotive schedule. It can significantly reduce the number of locomotives used. It uses the variance of detention time of locomotives at stations to evaluate the stability of locomotive schedule. In order to evaluate the effectiveness of the presented optimization model, case studies are conducted which implements the proposed model for generating locomotive schedules for 20kt heavy-loaded combined trains and 30kt heavy-loaded combined trains on Da-qin Railway, respectively. Results of case studies show that the proposed model could save 13 HXD locomotives and 49 SS4 locomotives for the locomotive schedule of operating 20kt heavy-loaded combined trains and it can save 47 SS4 locomotives and the number of HXD locomotives can also meet the needs for the locomotive schedule of operating 30kt heavy-loaded combined trains, compared with the current locomotive schedule. Therefore, the effectiveness of the proposed optimization model and its corresponding solving method is validated by case studies.

Copyright

© 2015, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Ruiye Su
AU  - Leishan Zhou
AU  - Jinjin Tang
PY  - 2015/11
DA  - 2015/11
TI  - Study on Heavy-Loaded Locomotive Schedule of Da-qin Railway
BT  - Proceedings of the 5th International Conference on Civil Engineering and Transportation 2015
PB  - Atlantis Press
SP  - 332
EP  - 345
SN  - 2352-5401
UR  - https://doi.org/10.2991/iccet-15.2015.66
DO  - 10.2991/iccet-15.2015.66
ID  - Su2015/11
ER  -