基于滚动优化的地铁列车节能运行协同控制方法

针对地铁列车节能运行问题,提出基于滚动优化的列车协同控制方法,将系统整体最优问题分解为基于时间推进的局部优化问题。考虑列车每次停站时同一供电分区内其它列车的操纵方案,实时计算下一站间运行净能耗最小的操纵方案。在计算操纵方案时,对传统的列车4阶段操纵策略进行改进,允许列车在运行途中进行2次牵引,减小列车牵引能耗并提高再生能的利用率。结果表明:相比列车基于传统4阶段的个体最优控制策略,采用本文提出的列车协同控制方法在不同发车间隔下均可提高再生能利用率并节约列车运行净能耗,平均节能率达8.37%。

Cooperative Control Strategy for Energy Saving Operation of Metro Train Based on Rolling Optimization

Focusing on the energy-efficient operation of metro trains,a cooperative control method for metro trains based on rolling optimization was proposed,in which the global optimization problem was decomposed into a series of time-varying local optimization problems.Whenever a train stopped at a station,the train developed the optimal driving strategy in the next inter-station run to minimize the net energy consumption considering other trains’control strategies in the same power supply zone.In calculating the control strategy,the traditional four-stage control strategy was improved by allowing the train to carry out two times of traction during the operation to reduce the energy consumption and increase the utilization rate of regenerative energy.Results show that compared with the individual optimal control strategy based on the traditional four-stage control strategy,the cooperative train control method proposed in this paper can improve the utilization rate of regenerative energy and save the net energy consumption of train operation under different departure headways,and the energy saving rate is 8.37%on average.