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High frequency transformer computer modeling

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Authors
Abu-Siada, Ahmed
Islam, Syed
Date
2007
Type
Conference Paper

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Citation
Abu-Siada, Ahmed and Islam, Syed. 2007. High frequency transformer computer modeling, in the Proceedings of the Australasian Universities Power Engineering Conference (ed), AUPEC 2007 Australasian Universities Power Engineering Conference, Dec 9 2007, pp. 314-318. Perth, WA: Curtin University of Technology.
Source Title
Conference Proceedings of the 2007 Australasian Universities Power Engineering Conference
Source Conference
Australasian Universities Power Engineering Conference AUPEC-2007
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ISBN
Faculty
School of Electrical Engineering and Computing
Department of Electrical and Computer Engineering
Faculty of Science and Engineering
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Copyright © 2007 IEEE. This material is presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights therein are retained by authors or by other copyright holders. All persons copying this information are expected to adhere to the terms and constraints invoked by each author's copyright. In most cases, these works may not be reposted without the explicit permission of the copyright holder.

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Abstract

Frequency response analysis (FRA) technique is nowadays widely used in both factory and field applications as a diagnostic tool for power transformers. The main problem about FRA techniques is to interpret the observed evolution of the frequency response in order to identify failures. Transformer high frequency computer modeling is proposed in this work to be used with the FRA. The physical meaning of the model parameters allows the identification of the problem inside the transformer. The paper presents the model and experimental results and analysis of the frequency responses on the variations of the winding parameters. Effect of core, bushings, oil and tank on FRA is also investigated.