轨道交通互联互通中牵引供电关键技术探讨

摘要

市域铁路是连接相邻城市间运营的电气化客运铁路，是介于城市轨道交通（地铁、轻轨）和城际高速铁路之间的运输模式。市域铁路可采用25 kV工频单相交流供电，也可采用传统的直流供电技术，其供电制式的选择直接影响到市域铁路的技术和建设标准以及资源的共享。本文结合成都市域铁路18号线，对城市轨道交通与国铁互联互通中不同制式的供电技术在隧道净空、下锚补偿、弓网关系、电能质量等关键技术进行探讨，分析不同方式供电的优缺点。%Suburban rail, a transportation mode in between urban mass transit (metro and light rail) and high-speed intercity rail, is an electrified passenger railway that connects adjacent towns. Both 25 kV power-frequency single-phase AC power supply and conventional DC power supply can be applied to suburban rail. The technology and construction standards as well as resource sharing are directly related to the power supply mode used in suburban rail. Combining with Chengdu No. 18 Suburban Rail, the article explores the key points, such as tunnel clearance, anchor compensation, pantograph-catenary relation and power quality, in interconnection between urban mass rail and national railway under different power supply modes, and summaries the merits and demerits of each power supply mode.