工业和商业设施中三绕组变压器的建模和应用。第2部分:不平衡和暂态分析

R. Rifaat
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引用次数: 0

摘要

在之前的配套文章中讨论了三绕组变压器的使用和基本建模。本文是对第一篇论文的补充,涵盖了工业电气系统中也可能存在的不平衡和暂态条件的建模。本文分两部分讨论了三绕组变压器的建模和表示。第一部分讨论单相和两相接地故障条件,包括零序阻抗的建模。第二部分讨论了在电磁瞬变程序(EMTP)中需要建模的三绕组变压器的谐波、通电和电压瞬变研究。在本课题条件下,论证了正确解释3W变压器参数、正确选择型号和案例分析的重要性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Modeling and applications of three winding transformers in industrial and commercial facilities part 2: Unbalanced and transient analysis
In a previous companion paper the usage and basic modeling of 3-winding transformers was discussed. This paper complements the first paper and covers the modeling for unbalanced and transient conditions that could also exist in industrial electrical systems. The modeling and presentation of 3-winding transformers is discussed in two parts. The first part discusses single and two phase-to-ground fault conditions and includes modeling of zero sequence impedances. The second part discusses modeling 3-winding transformers for harmonics, energization and voltage transients studies which require modeling in the Electromagnetic Transient Programs (EMTP). The importance of correct interpretation of 3W transformers parameters, correct selection of model and case studies are demonstrated for the subject conditions.
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