基于列车追踪间隔时间的高速动车组制动能力计算方法

Calculation Method for Braking Capacity of High Speed EMU Based on Train Tracking Interval Time

分析由列车区间追踪间隔时间、车站通过间隔时间和车站到达间隔时间确定的列车追踪间隔时间对高速动车组制动能力的要求,以六段式参数配置优化模型(TDE0模型)设定的列车运行控制系统制动减速度曲线为基础,提出以满足客运专线高速动车组最高运行速度和追踪间隔时间要求为目标、按TDE0模型算法逆步骤计算高速动车组制动能力的方法;并对计算结果用紧急制动距离、黏着、减速度和热负荷指标进行校核,用算例进行验证。结果表明:在运行速度等级和列车追踪间隔时间相同的条件下,车站到达间隔时间对高速动车组制动能力的要求更高,即车站到达间隔时间是限制全线列车追踪间隔时间的主要因素;建议在相关标准中,对不同速度等级高速动车组的最大常用制动能力做出统一规定。

The demands of train tracking interval time for the braking capacity of high speed EMU were analyzed, which were decided by section tracking interval time, station passing interval time and station ar- rival interval time. Based on the braking deceleration curve of train operation control system set by six-sec- tion type of parameter configuration and optimization model （TDE0 model）, a method was put forward to calculate the braking capacity of high speed EMU according to the inverse steps of TDE0 model, with the target to satisfy the demands for the maximum running and tracking interval time of high speed EMU on passenger dedicated line. The calculation results were first checked by such parameters as emergency bra- king distance, adhesion, deceleration and thermal load, and then validated by an example. The results show that, with the same level of running speed and tracking interval time, the demand of station arrival interval time for high speed EMU is higher than others. That is to say, station arrival interval time is the main factor limiting the tracking interval time of the whole line. It is suggested that a unified provision for the maximum service braking capacity should be defined for high speed EMU with different speed level in relevant standards.