Transient Modeling and Analysis of Transformer Windings under VFTO

被引:0
|
作者
Zhang, Ping [1 ]
Wang, Youhua [1 ]
Nie, Xinpeng [1 ]
Yan, Weili [1 ]
Zhang, Haijiao [2 ]
机构
[1] Hebei Univ Technol, Dept Elect Engn, Tianjin 300130, Peoples R China
[2] Baoding Tianwei Grp, Baoding 071051, Hebei, Peoples R China
基金
美国国家科学基金会;
关键词
VFTO; Over-voltage; FDTD; MTLM; EMTP;
D O I
10.1109/WCICA.2008.4593306
中图分类号
TP [自动化技术、计算机技术];
学科分类号
0812 ;
摘要
Calculation of over-voltage distribution of transformer windings under Very Fast Transient Over-voltage (VFTO) is very important to insulate design of transformers windings. In order to investigate over-voltage distribution under VFTOs, a proposed model using lumped-parameter components is presented in this paper. In the case of easily destroyed former several windings, each winding is modeled as one unit; other windings are modeled using two windings as one unit. Then mathematic model based on MTL (Multi-conductor Transmission Line) Model and boundary conditions is recommended. Eventually transient over-voltage distribution of practical transformer is calculated using FDTD (Finite Difference Time Domain) method. Computational results are consistent with Electro-magnetic Transient Program (EMTP), so feasibility and validity of this method is validated.
引用
收藏
页码:2442 / +
页数:3
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