Investigation and Optimisation of Urban Rail Transit Lifecycle Energy Saving in Coordinating Section Running Time and Slope

Besides operation, railway operators are tending to focus on energy saving from construction recently, which can lead to cost saving. Among them, the most representative means are energy saving slope and section running time optimisation. This paper proposed an energy economy method that coordinating optimise the section running time and the energy saving slope of gradient. The double layer optimisation model, includes model of train energy efficient operation and the coordinating optimisation model, is be formulated. Dynamic programming and traverse calculation are used to solve the optimal solution, respectively. The result shows the energy saving slop not always effectively and the coordinating optimisation can significantly improve the energy saving effect.