| 阻抗匹配平衡牵引变压器负序分析 |
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| 引用本文： | 张丽艳,李群湛,余丹.阻抗匹配平衡牵引变压器负序分析[J].电力系统及其自动化学报,2005,17(6):80-83. |
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| 作者姓名： | 张丽艳 李群湛 余丹 |
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| 作者单位： | 西南交通大学电气工程学院,成都,610031;西南交通大学电气工程学院,成都,610031;西南交通大学电气工程学院,成都,610031 |
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| 摘 要： | 三相电压到二相电压间的对称变换可有效减弱负序对电力系统的影响,为此,给出了适用于任意接线牵引变压器的通用负序电流表达式,分析了阻抗匹配平衡变压器的负序特性,讨论了其不同负荷条件下一次侧电流不平衡度,并结合某牵引变电所的一组实测数据将其与YNd11接线牵引变压器进行分析比较,结果表明,阻抗匹配平衡变压器能有效减弱负序电流.
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| 关 键 词： | 负序电流 不平衡度 阻抗匹配平衡变压器 |
| 文章编号： | 1003-8930（2005）06-0080-04 |
| 收稿时间： | 2005-01-12 |
| 修稿时间： | 2005-09-27 |
Analysis of Negative Phase-Sequence Current of Impedance-Matched Balance Transformer |
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| ZHANG Li-yan,LI Qun-zhan,YU Dan.Analysis of Negative Phase-Sequence Current of Impedance-Matched Balance Transformer[J].Proceedings of the CSU-EPSA,2005,17(6):80-83. |
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| Authors: | ZHANG Li-yan LI Qun-zhan YU Dan |
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| Affiliation: | School of Electrical Engineering,Southwest Jiaotong University, Chengdu 610031, China |
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| Abstract: | The general expressions of negative phase-sequence current in the traction transformer with arbitrary connection are presented. The characteristics of negative phase-sequence in the impedance-matched balance transformer are analyzed. The unbalanced degree of current in primary winding under different load conditions is discussed. The impedance-matched balance transformer is analyzed and compared with the traction transformer with YNd11 connection using the testing data of a traction substation. |
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| Keywords: | negative phase-sequence current unbalanced degree impedance-matched balance transformer |
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