In this paper, a piece-wise linearized transformer winding model is proposed for transient internal voltage distribution computations. In particular, the model is based on the linearization of the primitive non-linear, frequency dependent and invariant matrix of voltage distribution factors. This primitive matrix is utilized as a pattern from which, for any specific switching event and its frequency spectrum, the piecewise linearized matrix of voltage distribution factors can be computed. In this manner, a unified black-box to lumped-parameters combined transformer model successfully bypasses the need of geometrical data. The computations are also significantly reduced. The model is verified by measurements on a three-phase distribution transformer.

Original languageEnglish
Title of host publication2019 IEEE Milan PowerTech
Number of pages6
ISBN (Electronic)978-1-5386-4722-6
ISBN (Print)978-1-5386-4723-3
Publication statusPublished - 2019
Event2019 IEEE Milan PowerTech, PowerTech 2019 - Milan, Italy
Duration: 23 Jun 201927 Jun 2019


Conference2019 IEEE Milan PowerTech, PowerTech 2019

    Research areas

  • Internal voltage distribution, Lumped-parameters model, Modelling, Overvoltages, Transformer, Transients

ID: 57150861