A study on an energy saving train scheduling in consideration of vehicle load variations and loss model of traction circuit

It is expected that electric railways realize further energy-saving performance. In electric railways, the energy consumption depends on the train scheduling. Therefore, some researches have addressed energy saving by studying train scheduling. One of the researches optimized energy consumption by changing train scheduling based on mathematical models. However, it did not consider uncertainties of operation conditions. Since there inevitably exist uncertainties like adhesion coefficient and vehicle load, those possibly affect the optimality. In this paper, we explicitly consider vehicle load variation. The energy consumption is modeled taking the vehicle load variation into account. Then, we study optimization of energy saving based on the derived energy consumption model. The effectiveness of the optimization approach is validated by simulation studies.