城市轨道交通供电系统低碳节能技术发展综述

Review of the Development of a Low Carbon and Energy Saving Technology for the Urban Rail Transit Power Supply System

在“双碳”战略背景下,对城市轨道交通供电系统的低碳节能技术发展方向进行综合论述,给出未来城市轨道交通供电系统低碳节能技术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的应用情况进行总结,根据已投运线路实测数据,分析光伏发电和再生制动能量利用对节能降碳的作用;针对不同牵引制式的特点,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的。

With the motivation to achieve the carbon peak and neutrality goals,this study comprehensively discusses the development trends of low carbon and energy-saving technology for urban rail transit power supply systems;several reasonable suggestions have been proposed for their future development.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 green flexible power supply systems for urban rail transit are proposed based on power electronics technologies.While clean energy can be fully absorbed,the energy utilization rate and power supply quality can be further improved using bidirectional converters,a co-phase power supply,and other technologies to ultimately achieve the energy-saving and carbon reduction goals.