摘要
从Ｙ／△变压器的发展演变，分析了电气铁道阻抗匹配平衡型牵引变压器的电气特性，提出注入电力系统的谐波和基波负序电流计算式，并等效为中性点不接地的Ｓｃｏｔ变压器。对阻抗匹配条件、容量利用、不对称绕组容量，以及不对称、谐波和波动损耗进行了分析和计算。
From the development of Y/△ transformer,the electric characteristics of impedance matching balance traction transformer for electric railways have been analysed,the harmonic and negative sequence(fundamental) current injected into power system calculation formulas are proposed,and the coversed equivalent Scott transformer with neutral ungrounded are also presented The impedance matching conditions,capacity usage,capacity of asymmetry windings as well as the asymmetry,harmonic and fluctuating losses are analyzed and calculated
关键词
电气铁道
阻抗匹配
牵引变压器
平衡型
Electric Railway Impedance matching Balance Transformer Characteristic
