在“双碳”战略背景下,本文对城市轨道交通供电系统的发展方向进行了综合论述,给出了未来城市轨道交通供电系统发展方向的合理建议。首先对目前清洁能源和再生能量利用技术在轨道交通中应用情况进行总结,根据已投运线路实测数据分析了光伏发电和再生制动能量利用对节能降碳的作用；针对不同牵引制式特点,分别提出基于电力电子技术的新一代城市轨道交通绿色柔性供电系统架构,一方面将充分消纳清洁能源,另一方面通过双向变流器、同相供电等技术提高能量利用率,改善供电质量,最终达到节能降碳的目标。

Under the background of achieving the carbon peak and neutrality goals, this paper comprehensively discusses the development trends of urban rail transit power supply system. Several reasonable suggestions are put forward for the future development of urban rail transit power supply system. First, applications of clean energy and regenerative braking energy technologies in the urban rail transit are summarized. The effect of photovoltaic power generation and regenerative braking energy utilization on energy saving and carbon reduction is analyzed according to the measured data of operational lines. According to the characteristics of different traction systems, architectures of new urban rail transit green flexible power supply system are respectively proposed based on power electronics technologies. On the one hand, clean energy can be fully absorbed. On the other hand, energy utilization rate and the power supply quality can be improved through bidirectional converters, cophase power supply and other technologies, ultimately achieving the goal of energy saving and carbon reduction

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