A Piece-wise Linearized Transformer Winding Model for the Analysis of Internal Voltage Propagation

A Piece-wise Linearized Transformer Winding Model for the Analysis of Internal Voltage Propagation

Theocharis, A. (Karlstad University)
Popov, M. (TU Delft Intelligent Electrical Power Grids)

2019

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.

Internal voltage distribution
Lumped-parameters model
Modelling
Overvoltages
Transformer
Transients

http://resolver.tudelft.nl/uuid:ca7d0c02-9438-4d7a-bafe-6696a46ac24a

https://doi.org/10.1109/PTC.2019.8810920

IEEE

2021-05-03

978-1-5386-4723-3

2019 IEEE Milan PowerTech

2019 IEEE Milan PowerTech, PowerTech 2019, 2019-06-23 → 2019-06-27, Milan, Italy

Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.

Institutional Repository

conference paper

© 2019 A. Theocharis, M. Popov