高速列车追踪运行过程的节能优化

Energy-saving optimization of high-speed train tracking operation process

对追踪列车运行曲线的优化研究,可有效降低列车能源消耗。采用萤火虫算法(FA)可解决此类问题。将后行列车运行能耗作为目标函数,以速度、时间、距离和两车间安全距离为约束条件,建立数学模型。以CRH3型动车组和武广客运专线中某段线路为基础进行仿真实验。首先,运用萤火虫算法搜索工况转换速度序列使得列车能耗最低;然后,再次使用该算法对此序列值二次寻优。仿真结果表明:追踪列车运行能耗指标降低14.31%,满足安全性与准时性要求。

Research on optimization of tracking train operation curve of high-speed train can effectively reduce energy consumption.Using the firefly algorithm(FA)can effectively solve this problem.The tracking train energy consumption is taken as the objective function,and the mathematical model is established by limited speed,time,distance and safety distance into constraints.Simulation experiment based on a certain section of CRH3 EMU and Wuhan to Guangzhou Special Line.Firstly,using the firefly algorithm to search the working condition conversion speed sequence value makes the lowest train energy consumption.Then,the algorithm is used again for quadratic optimization of the sequence value.The simulation results show that the energy consumption index of tracking train operation is reduced by 14.31%and meets the requirements of safety and punctuality.