在不改变区间运行时间的条件下地铁列车制动率的仿真优化
潘洋
Simulation and Optimization of Metro Train Braking Rate under the Timing Condition
PAN Yang
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作者信息:广州地铁设计研究院股份有限公司，510030，广州
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Affiliation:Guangzhou Metro Design & Research Institute Co., Ltd.，510030，Guangzhou，China
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关键词:
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Key words:
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DOI:10.16037/j.1007-869x.2025.01.057
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中图分类号/CLCN:TK01+8
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栏目/Col:应用技术
摘要:
［目的］随着我国城市轨道交通绿色低碳发展目标的提出，地铁节能减排的压力与日俱增。牵引能耗是地铁运营中最主要的能源消耗。因此，有必要对列车牵引能耗进行优化研究。［方法］考虑地铁设计和运营过程中列车制动率偏低的问题，在不改变区间运行时间的条件下即定时条件下，提出适当增加列车制动率和降低最高巡航速度的节能运行策略。在建立列车牵引仿真计算模型的基础上，提出定时条件下的计算方法。通过案例仿真来验证模型的可行性，以列车制动率为主要对象，分析其对牵引能耗的影响。［结果及结论］以平直区间进行仿真计算，结果表明：定时条件下，最高巡航速度越大的列车对制动率的变化越敏感，列车制动率提高的初期能明显降低列车最高巡航速度，从而达到降低牵引能耗的效果。以广州市域快轨22号线某区间为例进一步仿真验证节能策略的可行性及其节能效果，结果表明：定时条件下，当该区间制动率从0.60增加到0.85时，列车最高巡航速度可以从141km/h下降至117km/h，可节约能耗比达30%，节能效果明显。因此，地铁设计和运营中可适当提高列车制动率以节省牵引能耗。
Abstracts:
［Objective］ With the proposal of a green and low-carbon development goal for urban rail transit in China, metro is facing a daily increasing pressure of energy saving and emission reduction. Since traction consumes the main energy in metro operation, it is necessary to conduct a study on the optimization of traction energy consumption. ［Method］ In consideration of the low train braking rate in the process of metro design and operation, an energy-saving operation strategy is proposed by appropriately increasing the train braking rate and lowering the maximum cruising speed under fixed interval running time condition, that is, under the timing condition. Based on the establishment of the train traction simulation calculation model, a calculation method under the timing condition is proposed. The feasibility of the model is verified through case simulation, and the impact of the braking rate on traction energy consumption is mainly analyzed. ［Result & Conclusion］ Simulation calculation is conducted on a flat and straight interval, results showing that under the timing condition, the larger the maximum cruising speed of the train is, the more sensitive it is to the change of the braking rate. In the initial period, the increase of train braking rate can obviously bring down the maximum cruising speed of the train, achieving the effect of reducing the traction energy consumption. The feasibility of the energy-saving strategy and its effect are further verified on a specific interval of Guangzhou Urban Rail Line 22. The results show that under the timing condition, when the braking rate on the interval is increased from 0.6 to 0.85, the maximum cruising speed of the train can be reduced from 141 km/h to 117 km/h, saving 30% of the energy consumption with a significant energy-saving effect. As a conclusion, the train braking rate can be appropriately increased in the metro design and operation to save traction energy consumption.
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