Y/>/▽电力牵引平衡变压器应用的可行性研究  

Y/>/▽ Transformer Balanced Application of Electric Traction Feasibility Study

作　　者：何利[1] 田铭兴[1] 田文君[1] 刘言菊[1] 

机构地区：[1]兰州交通大学自动化与电气学院,兰州730070

出　　处：《电力学报》2010年第6期463-466,共4页Journal of Electric Power

摘　　要：电力牵引变压器是电力系统的一种重要负荷,由于Y/>/▽电力牵引平衡变压器可以解决一般铁路牵引动力在供电系统中引起的负序电流,在很大程度上能够改善三相供电系统的不对称运行状态。首先介绍了Y/>/▽平衡变压器的一般原理、接线图,推导了Y/>/▽平衡变压器三相-两单相侧的电压、电流关系并对不平衡度进行了计算,应用Matlab对Y/>/▽平衡变压器带单相纯阻性负载供电系统进行建模、仿真。并通过在一台2 kVA的Y/>/▽平衡变压器样机上验证了应用的可行性和实用性。This article describes the Y/〉/▽ balance general principles of transformers, wiring diagrams,Derived Y/〉/▽ transformer balanced three-phase-Two single phase side voltage and current relationships and imbalance were calculated, Application Matlab on Y/〉/▽ equilibri- um of pure single-phase transformer with resistive load power system modeling, simulation. We know that electric traction transformer is an important power system load, the Y/〉/▽ electric traction balance transformer can be solved in the general railway traction power supply system caused by negative sequence current, in large part to improve the three-phase asymmetric power system operating state,by a 2 kV · A the Y/〉/▽ balance transformer prototype proved the feasibility and practicality.

关 键 词：Y/>/▽平衡变压器 实验样机 MATLAB仿真 单相负载 负序电流 

分 类 号：TM41[电气工程—电器]