电气化铁路中压直流供电系统  

Medium-voltage DC Power Supply System for Electrified Railways

作　　者：徐倩 XU Qian(State Grid Sichuan Electric Power Company,Deyang Supply Company,Deyang 610058,China)

机构地区：[1]国网四川省电力公司德阳供电公司,四川德阳610058

出　　处：《电工技术》2024年第18期207-211,共5页Electric Engineering

摘　　要：中压直流牵引供电系统可以有效解决当前电气化铁路存在的电能质量和过分相问题,对于推进铁路的高速化和重载化发展具有重大意义。相较于传统的交流牵引供电系统,中压直流牵引供电系统可以更简单高效地接入可再生能源,提高再生制动能量的利用率,提升轨道交通的连通性。首先对电气化铁路的研究现状进行梳理;然后对中压直流牵引供电系统的拓扑结构、控制策略和电压等级、架空线横截面积以及变电所间距的选择方案进行分析归纳;最后从交改直、能量管理和系统保护等方面展望中压直流牵引供电系统的发展。The medium-voltage direct current traction power supply system can effectively solve the power quality and neutral section existing in the current electrified railways,and is of great significance for promoting the development of high-speed and heavy-duty railways.Compared with the conventional AC traction power supply system,the medium voltage DC traction power supply system can more easily and efficiently integrate renewable generations,improve the utilization of regenerative braking energy,and improve the connectivity of rail transit.In this paper,the status quo of electrified railways is first clarified.Then the topology,control strategy and voltage level of the medium voltage DC traction power supply system,the cross-sectional area of overhead lines and the spacing of substations are analyzed and summarized.Finally the future development of medium voltage DC traction power supply system is discussed from the perspectives of AC-to-DC transformation,energy management and system protection.

关 键 词：中压直流牵引供电系统 电压等级选择 控制策略 

分 类 号：TM73[电气工程—电力系统及自动化]