27.5kV供电的AT供电系统性能分析  

Analysis of Characteristics of AT Power Supply in 27.5 kV Power Supply System

作　　者：辛成山[1] 

机构地区：[1]北方交通大学电气工程学院,北京100044

出　　处：《电气化铁道》2002年第2期1-3,共3页Electric Railway

摘　　要：讨论了27.5 kV供电的AT供电系统性能并得出结论:第1个AT漏抗较小时,27.5 kV自耦变压器供电系统的电气性能与正常AT供电系统基本一样;第1个AT只向第2个AT提供功率,不直接向负荷提供功率则第1个AT的电流永远与第2个AT一样;只有1个AT区间的27.5 kV AT供电系统的优点是可能节省变压器总容量;与由55 kV供电的正常AT供电系统比,第1个AT承受的短路电流增大且须注意承受短路电流能力校核。Discusses the characteristics of AT power supply in 27.5 kV power supply system and drawes the conclusions: if the leakage resistance of the first AT in the system is a little less, the characteristics of the system is basically identical to the normal one ; if the first AT supplies power to the second AT in indirect supplying, the current of the first AT is always identical to that of second AT; the advantage of having one AT section in the system is to save the total capacitance of transformers; the first AT is able to withstand higher short-circuited current compared with AT power supply in 55 kV power supply system, but the attention must be paid for checking the ability of withstanding of short-circuited current.

关 键 词：牵引供电 AT供电系统 电气化铁路 电气性能 性能分析 

分 类 号：U223.6[交通运输工程—道路与铁道工程]