| 星形三角形接线牵引变压器的运行特性与数学模型 |
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| 引用本文： | 吴命利.星形三角形接线牵引变压器的运行特性与数学模型[J].北京交通大学学报(自然科学版),2007,31(2):94-98. |
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| 作者姓名： | 吴命利 |
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| 作者单位： | 北京交通大学电气工程学院,北京100044 |
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| 摘 要： | 从磁势平衡方程、绕组接线方程、输出端口方程和电压传递方程出发，分析了星形三角形接线牵引变压器的运行特性．通过推得的数学表达式阐明了变压器绕组短路阻抗和中性点运行方式对其性能的影响．同时，给出了星形三角形接线牵引变压器的二次侧端口电压输出方程、两相等值电路和相坐标下的节点导纳矩阵，以便同三相电力系统和牵引网接口进行分析．
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| 关 键 词： | 电气化铁道 牵引变压器 牵引变电所 节点导纳矩阵 |
| 文章编号： | 1673-0291(2007)02-0094-05 |
| 修稿时间： | 2006年9月21日 |
Operational Performance and Mathematical Model of Wye-Delta Traction Transformer |
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| WU Ming-li.Operational Performance and Mathematical Model of Wye-Delta Traction Transformer[J].JOURNAL OF BEIJING JIAOTONG UNIVERSITY,2007,31(2):94-98. |
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| Authors: | WU Ming-li |
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| Abstract: | Based on the magnetomotive force balance equations,winding connection equations,output- port equations and voltage transfer equations,the operational characteristics of the wye-delta traction transformer have been analyzed.The influence of the winding short-circuit impedances and the opera- tion mode of the primary neutral on the performance of the transformer are clarified by virtue of math- ematical expressions derived.Meanwhile,the output voltage equations,two-phase equivalent circuit and the nodal admittance matrix in phase coordinates of the transformer are presented,which can be used to interface the three-phase power system,and the traction networks analyze the related problems. |
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| Keywords: | electric railway traction transformer traction substation nodal admittance matrix |
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