Simulation Calculation of Energy Consumption Based on Multiple Models of Train Operation
The operating mileage and total energy consumption of urban rail transit systems are constantly increasing.To accurately calculate energy consumption,the actual train-side energy consumption formula that considers dynamic motor efficiency and an energy consumption simulation and calculation model based on the single-and multiple-mass-point models of train operation are constructed in this study.First,the energy flow process of the train traction drive system was studied,and the relationship between the efficiency of each component and the train operation state was established.Second,the actual train energy consumption calculation based on electric power was deduced according to the two-table method by combining the efficiency conversion of each component.The factors affecting energy consumption were comprehensively analyzed,and an energy consumption simulation and calculation method considering single-and multi-mass-point train models was proposed.Finally,taking the four stations and three intervals of a regional line in China as an example,the results show that the operation energy consumption under either the single-or the multiple-mass-point train operation model achieves a deviation of less than 5％compared with the actual energy consumption,which verifies the accuracy of the proposed energy consumption model.In addition,the operational energy consumption of the multi-mass model was further reduced by a 1.66％deviation from that of the single-mass model.The proposed model provides theoretical support for the optimization of train energy savings and actively contributes to the development strategy of China's green economy.
regional railwaytrain operation modeltrain operation energy consumptiondynamic motor efficiencysingle-mass point modelmultiple-mass point model
NETL
NSTL
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