Prediction and Control of Transformer Inrush Currents

In this paper, we propose a dynamic model of the electrical transformer suitable for the numerical prediction of the inrush currents due to the arbitrary initial excitation of a transformer after a switch-OFF. In particular, the proposed model can be helpful to control strategies to avoid a transien...

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Bibliographic Details
Published in:IEEE transactions on magnetics 2015-03, Vol.51 (3), p.1-4
Main Authors: Cardelli, Ermanno, Faba, Antonio, Tissi, Francesco
Format: Article
Language:English
Subjects:
Dynamic models
Excitation
Inrush current
Magnetic cores
Magnetic flux
Magnetic hysteresis
Magnetism
Magnetization
Mathematical model
Mathematical models
Numerical models
Numerical prediction
Strategy
Surges
Switches
Transformers
Transient current
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Summary:In this paper, we propose a dynamic model of the electrical transformer suitable for the numerical prediction of the inrush currents due to the arbitrary initial excitation of a transformer after a switch-OFF. In particular, the proposed model can be helpful to control strategies to avoid a transient current overshoot, based on the prediction of the residual magnetic flux.
ISSN:0018-9464
1941-0069
DOI:10.1109/TMAG.2014.2342795