基于单纯形法的城轨列车惰行点搜索

Coast Points Searching for Urban Mass Transit Trains Based on Simplex Method

摘要:

对电气化铁路的节能技术,解决的方案通常为优化牵引运行策略、再生制动和能量存储系统.为提高单列车区间运行牵引能源利用效率,有效的做法是合理设定区间运行时间,适当减少牵引能源消耗.惰行控制是平衡运行时间和能源消耗的一种通用方法.然而,在应用系统实际情况的约束下,确定合适的惰行点并不容易.针对城市轨道列车区间运行,介绍了基于单纯形法的搜寻合适惰行点的方法,考虑在特定运行时间下,借助于单列车仿真系统的帮助,研究这种启发式搜索法在确定惰行点方面的可行性和性能表现.

Abstract:

The technical solution for energy saving on electrified railways is usually provided by optimizing driving strategy,regenerative braking and energy storage systems.For consuming traction energy more efficiently during a single-train journey,an effective method is trading-off reductions in energy by setting a reasonable running time.Coasting control is a viable means to balance the specific run-time and the energy consumption.However,identifying the necessary coast starting points under the constraints of current service conditions is not simple.The paper presents an application of simplex method to searching for the appropriate coast points for urban mass transit trains and an investigation of the feasibility and performance of this searching measures in locating coast points with the aid of a single train simulator,according to specified inter-station run times.