客运专线牵引网保护方案设计

Design of Protection Scheme of Traction Network for Passenger Dedicated Lines

国内客运专线牵引供电系统普遍采用全并联AT供电方式,由于接入电压等级提升、负荷电流增加、谐波含量降低等因素,传统的牵引网保护配置已不能满足新型牵引网的要求。针对国内客运专线牵引供电系统的特点和要求,对其牵引网的馈线、AT所和分区所的进线和自耦变压器进行了新型保护方案的配置设计。

All-parallel AT power supply way are generally used on traction power supply system for passenger dedicated line. Because of the factors of voltage level increasing, load current increasing and harmonic content reducing, the traditional traction network protection configuration program does not meet the characteristics of the new traction network. According to the characteristics and requirements of traction power supply system for passenger dedicated line, this paper designs a new protection scheme for it＇s traction network which contains the feeder line、the incoming line of AT and district and the auto-transformers.