The invention discloses a subway train on-line energy-saving optimization control method based on vehicle-mounted energy storage, and the method comprises the steps: building a train dynamics model with a train position as an independent variable and speed and time as state variables under the precondition of considering basic resistance, train traction/braking force, gradient additional force and the like; then, discretizing the length of a subway running line, and discretizing a train dynamic model and the stress; a train traction force/braking force switching scheme is established, and the mode switching sequence of the train running among multiple stations is stipulated; designing a charging and discharging strategy of the vehicle-mounted super capacitor; constructing a train energy-saving operation optimization problem; the optimal energy-saving driving strategy from the current position to the terminal point of the train is solved according to the constraint condition and the state recursion equation, the optimal strategy is obtained in real time and updated every time the train runs to a new discrete point, the mode switching thought is fully utilized, and the method has the advantages of rolling optimization, online train control, reasonable train braking energy utilization and the like.
本发明公开了一种基于车载储能的地铁列车在线节能优化控制方法,在考虑存在基本阻力、列车牵引/制动力、坡度附加力等前提条件下,以列车位置为自变量、速度和时间为状态变量建立列车动力学模型;随后将地铁运行线路长度进行离散化处理,并将列车动力学模型以及所受力进行离散化;建立列车牵引力/制动力切换方案,规定列车在多站间行驶时的模态切换顺序;设计车载超级电容器的充放电策略;构造列车节能运行优化问题;根据约束条件结合状态递推方程,求解列车当前位置到终点的最优节能驾驶策略,每行驶到一个新的离散点,实时获取最优策略并进行更新,该方法充分利用了模态切换思想,具有滚动优化、在线控制列车、合理利用列车制动能量等优点。
On-line energy-saving optimization control method for subway train based on vehicle-mounted energy storage
一种基于车载储能的地铁列车在线节能优化控制方法
2022-11-22
Patent
Electronic Resource
Chinese
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