三相变四相变压器在AT供电系统中的应用研究  

STUDY ON THE APPLICATION TO AT POWER SUPPLY SYSTEM OF THREE-PHASE TO FOUR-PHASE TRANSFORMER

作　　者：娄奇鹤[1] 高仕斌[1] 

机构地区：[1]西南交通大学电气工程学院,四川省成都市610031

出　　处：《中国电机工程学报》2005年第1期124-130,共7页Proceedings of the CSEE

摘　　要：给出了三相变四相变压器在电气化铁道 AT 牵引变电所中的接线形式,针对不同负荷条件下的负序电流进行了计算和分析,以曲线形式描述了三相侧电流不对称度的变化规律,分析了三相变四相变压器在电气化铁路应用中的容量选择问题。与其它牵引变压器相比,三相变四相变压器具有较好的结构和平衡特性,可以用于电气化铁路 AT 供电。The connection scheme of electric railway traction substation with AT power supply system used three-phase to four-phase transformer is proposed. The negative sequence currents under different loads are calculated. And the rules of the current asymmetry degree at the three-phase side are described in the form of curves. The problem of capacity selection of three-phase to four-phase transformer used in electric railway is analyzed. Because of the better structure and balance characteristic compared with other transformer used in electric railway, the three-phase to four-phase transformer can apply to AT power supply system.

关 键 词：三相 牵引变压器 接线形式 负序电流 容量选择 相变 平衡特性 AT供电系统 电气化铁路 牵引变电所 

分 类 号：TM63[电气工程—电力系统及自动化] U223[交通运输工程—道路与铁道工程]