Energy efficiency emergence of high‑speed train operation and systematic solutions for energy efficiency improvement

摘要

Different from the concept of energy consumption, the energy efficiency reflects the efficiency of using energy resourceand the service-oriented business philosophy of railway transportation enterprises. The energy efficiency of high-speedtrain operation is mainly embodied in the operation stage of railway transportation system, but involves a number offactors during the whole life cycle of railway transportation system. Based on the above understanding, the principleof making gradual and orderly progress is followed to broaden our research vision in space and time so that the globalenergy efficiency of high-speed train operation can be better studied. Firstly, we describe in detail the definition of theoperational energy efficiency of high-speed train. Then the energy efficiency model of high-speed train operation isestablished to reveal the energy efficiency emergence mechanism of high-speed train operation. The simulation is carriedout to analyze the complex influence of train light-weighting, control scheme, load ratio, and different inter-stationdistance on the operational energy efficiency of high-speed train moving through a block section. The proportion of thebraking energy consumption of high-speed train with the non-regenerative braking mode is calculated in real time sothat the maximum amount of available regenerative braking energy can be known for the better design of the regenerativeenergy recycling system in the future. This study can help to get the systematic solutions to further improve theoperational energy efficiency of all in-service high-speed trains.