列车属性对城市轨道交通牵引能耗的影响及列车用能效率评价

Impact of Train Characteristics on Traction Energy Consumption of Urban Rail Transit and Evaluation on Train Energy Efficiency

通过建立城市轨道交通列车牵引能耗模型,分析影响牵引能耗的列车属性,并基于灵敏度分析方法判断列车属性对牵引能耗的影响程度;定义牵引能耗模型中的被积函数为列车用能效率特征值,用于列车用能效率的评价。研究结果表明:影响牵引能耗的列车属性主要包括列车的质量、单位基本阻力和牵引电机效率,这三者中以列车质量对牵引能耗的影响最大,单位基本阻力对牵引能耗的影响最小,而牵引电机效率对牵引能耗的影响程度随着牵引电机效率的提高而减小;分别采用列车用能效率特征值和仿真的方法对同一线路上运行的列车进行牵引能耗比较,得到的列车牵引能耗排序完全一致,说明列车用能效率特征值可以准确判别列车用能效率的高低;根据列车用能效率特征值随速度变化的规律,可以分析不同列车在不同类型线路上节能运行的适用性,为城市轨道交通车辆的选型提供依据。

By establishing the traction energy consumption model of urban rail transit,the train characteristics influencing traction energy consumption were analyzed and the influence degrees were estimated on the basis of sensitivity analysis method.The integrand in the traction energy consumption model was defined as the eigenvalue of train energy efficiency to evaluate train energy efficiency.Results show that the train characteristics influencing traction energy consumption mainly include train mass,unit basic resistance and traction motor efficiency.Among which,the influence of train mass on traction energy consumption is the greatest and that of unit basic resistance is the least.The influence degree of traction motor efficiency decreases with the increase of traction motor efficiency.The eigenvalue of train energy efficiency and simulation methods are adopted respectively to compare the traction energy consumption of trains running on the same line.The obtained orders for traction energy consumption of trains are in full agreement,which indicates that the eigenvalue of train energy efficiency can accurately identify train energy efficiency.In accordance with the variation law of the eigenvalue with speed,the applicability can be analyzed for the energy-saving operation of different trains on different lines,which can provide theoretical basis for vehicle type selection of urban rail transit.