Transformer Leakage Flux Models for Electromagnetic Transients: Critical Review and Validation of a New Model

This paper presents experimental validation of the coupled leakage inductance transformer model. It is shown that the coupled approach yields the same results as the indefinite admittance matrix method of BCTRAN. A topologically correct three-phase shell-type transformer model is proposed. The conne...

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Bibliographic Details
Published in:IEEE transactions on power delivery 2014-10, Vol.29 (5), p.2180-2188
Main Authors: Lambert, Mathieu, Martinez-Duro, Manuel, Mahseredjian, Jean, de Leon, Francisco, Sirois, Frederic
Format: Article
Language:English
Subjects:
Consistency
Equivalence
Flux
Inductance
Integrated circuit modeling
Joining
Leakage
Leakage inductance
low-frequency electromagnetic transients
Magnetic circuits
Mathematical model
Mathematical models
topological model
Transformer cores
transformer modeling
Transformers
Windings
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Description
Summary:This paper presents experimental validation of the coupled leakage inductance transformer model. It is shown that the coupled approach yields the same results as the indefinite admittance matrix method of BCTRAN. A topologically correct three-phase shell-type transformer model is proposed. The connection points between the leakage and magnetizing inductances are properly identified, which makes the new model superior to BCTRAN and the hybrid models by providing physical consistency. In addition, experimental verification of a method to calculate the short-circuit inductances is presented. New explanations on the division of leakage flux and on the mathematical equivalence between the T- and Π-equivalent models are also given.
ISSN:0885-8977
1937-4208
DOI:10.1109/TPWRD.2013.2293978