Systematic switching study of transformer inrush current: simulations and measurements

The verification of a transformer model for the repre- sentation of transient behaviors such inrush and ringdown is not trivial as several parameters may influence measurements and simulations. The purpose of this paper is to suggest a laboratory testing strategy and to present an enhanced transformer model. A special emphasis is given to parameters estimation. The objective is to be able to obtain most of the model data directly from standard test report data. Design data are used to verify the parameters and to have a better estimation of scaling factors. The model is verified against few measurements and good agreement is observed for residual flux, inrush current first peak and decay .

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