基于时间离散化的单列车节能运行优化研究

摘要

In order to solve the single⁃train energy saving operation problem, a energy saving operation optimization model of single⁃train based on time discretization was proposed. First, the train running time was divided into the same intervals that were small enough. The expression of the train speed in time subinterval was described and the total traction energy was deduced by com⁃paring the interval end points of train speed and the running condition in time subinterval. Then, a energy saving optimization opera⁃tion model of single⁃train was established based on the objective function of total energy consumption. Finally, the model was ap⁃plied to an example and the optimal speed distance curve was obtained.%针对单列车节能运行问题，提出了一种基于时间离散化的单列车节能运行优化模型。首先将列车运行时间离散为足够小的等间隔子区间，建立时间子区间内列车速度的表达式，通过比较各子区间端点的速度大小，确定子区间内列车的运行工况，进而推导出牵引总耗能；然后以牵引总耗能最小为目标函数，建立单列车节能运行优化模型；最后将模型应用于实际算例，得到其最节能运行的速度距离曲线。