Optimal Sizing of Hybrid Power System Based on Typical Driving Cycle of the Shunting Locomotive

With the advancement of new energy technologies and the promotion of carbon peaking and carbon neutral double carbon targets, energy saving and emission reduction have become an important research direction in the field of rail transportation. The optimal sizing of the hybrid power system is important for saving energy and improving economy, while the typical driving cycle cover the operation of shunting locomotives and is the basis for capacity configuration, so this paper studies and analyses the typical driving cycle of oil–electric hybrid shunting locomotives and the capacity configuration of the hybrid power system. Firstly, the typical driving cycle of the shunting locomotive is extracted using genetic algorithm, and the deviation of the unit energy consumption is controlled within 0.2%. Finally, using the typical driving cycle as input conditions, a capacity configuration model based on the convex optimisation method is established, and finally the optimised hybrid system configuration parameters are obtained, and its total life-cycle cost economy is improved by 19.26% compared to the original configuration.