铁路接触网与电力贯通线同杆合设方案研究——以埃及斋月十日城铁路项目为例

Study on the erection scheme of railway OCS and power supply system——Take the 10th ramadan railway as an example

埃及斋月十日城铁路是该国首条采用交流27.5 kV制式的电气化铁路,采用直供加回流的牵引供电模式,接触网采用全补偿简单链形悬挂。电力贯通线是用于铁路信号、通信及其他铁路综合用电的电力系统线路。一般距离铁路100 m以内,它引于公共电网或公共电网以外的发电厂、变电站及输配电线路,是铁路沿线连通两相邻变、配电所的主要对沿线铁路用电负荷供电的电力线路,不同于国内的10 kV电力系统,埃及采用20 kV电力系统。本项目采用了电气化铁路接触网系统与20 kV电力贯通线系统“同杆合架”的技术,兼顾了技术可靠性、经济性与视觉美观性,实现了埃及业主的需求。

10thRamadan Railway is the first AC 27.5 kV electrified railway in Egypt.The directly supply and return current power supply mode is adopted in this project, and the Auto-tensioned simple catenary equipment is adopted for OCS(Overhead Catenary System).Power supply line is a power system used for railway signal, communication and other railway integrated electricity system.It is powered by the public grid or other substations and transmission lines outside of the public grid within 100 meters of the railway.It is a power line connecting two adjacent substation or distribution stations along the railway, and it is the main system which feed the electrical load along the railway.Different from the domestic 10 kV power system, Egypt adopts 20 kV power system.This project adopts the new technology of electrified railway OCS and 20 kV power system “Erection on the same mast”, taking into account technical reliability, economy and visual aesthetics, to meet the requirements of the Egyptian owners.