高速列车应急自走行辅助驾驶研究

当牵引供电网发生故障,高速列车应急自走行系统受车载储能装置容量限制,特别是在线路条件复杂时,如何操纵列车实现就近停车变得异常困难。为了解决高速列车应急自走行系统的速度曲线规划问题,进行了应急自走行辅助驾驶装置的功能设计和系统结构设计。根据列车应急运行的特点,设计了应急自走行优化算法。以CR400BF复兴号动车组列车运行于国内某高速铁路线路为例进行仿真,仿真结果表明,该装置可在能量受限的情况下规划列车自走行的运行速度曲线,与司机巡航驾驶相比实现了良好的节能性;同时,基于节能优化操纵策略,采用不同的牵引目标恒速速度进行仿真,仿真结果表明,根据线路条件选择合适的牵引目标恒速速度,对于车载储能装置容量受限的高速列车应急自走行驾驶具有重要的指导意义。

Research on Urgent Operation Assistant Driving for High-speed Train

How to control the high-speed train to achieve near-stop parking is extremely difficult under the condition of traction power net broken, especially when the railway profile is complicated, due to the power supply limitation of the onboard energy storage equipment. The function design and system structure design of urgent operation assistant driving were conducted to solve the speed curve planning problem. According to the characteristics of the train urgent operation, the train operation optimization algorithm was designed. Taking the CR400 BF Fuxing EMU train running on a domestic high-speed railway as an example for simulation, the device could plan the running speed curve of the train’s self-running under the condition of limited energy, and achieved good energy saving compared with the driver’s cruise driving. At the same time, based on the energy-saving optimization control strategy, different traction target constant speeds were used for simulation, which showed that selecting the appropriate traction target constant speed according to the line conditions was of great guiding significance for the urgent operation driving of high-speed trains with limited energy.