Determination Approach for the Parameters of Equivalent Circuit Model of Deep Saturated Three-Phase Integrative Transformers

Based on the analysis of the defects of the traditional methods for determining the equivalent circuit parameters of three-phase integrated transformers by single-phase excitation, an expression method of equivalent circuit parameters and their determination approach based on three-phase simultaneou...

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Bibliographic Details
Published in:IEEE transactions on magnetics 2018-11, Vol.54 (11), p.1-5
Main Authors: Wang, Yingying, Shangguan, Yunqi, Yuan, Jiansheng
Format: Article
Language:English
Subjects:
Circuit faults
Circuits
Computer simulation
Deep saturation
equivalent circuit model
Equivalent circuits
Excitation
Finite element method
Inductance
Integrated circuit modeling
Magnetic circuits
Magnetism
Mathematical models
Parameters
Phase transitions
phase-dependent parameters
three-phase integrative transformer
Transformer cores
Transformers
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Summary:Based on the analysis of the defects of the traditional methods for determining the equivalent circuit parameters of three-phase integrated transformers by single-phase excitation, an expression method of equivalent circuit parameters and their determination approach based on three-phase simultaneous excitation are presented in this paper. The parameters are expressed in terms of the phase of the excitation source, and the value of parameters is determined by calculating the reluctance of core segments based on the finite element method simulations. Then, the electric circuit parameters are obtained by converting the magnetic circuit into the electric circuit. This kind of electric circuit model is suitable for analyzing the problems of deep saturation of transformers and the concerning power grid problems.
ISSN:0018-9464
1941-0069
DOI:10.1109/TMAG.2018.2848234