Multi-Conductor Transmission Line Model of Split-Winding Transformer for Frequency Response and Disk-to-Disk Fault Analysis

Document Type : Original Article

Authors

1 Department of Electrical Engineering, Zanjan Branch, Islamic Azad University, Zanjan, Iran

2 Department of Electrical Engineering, Abhar Branch, Islamic Azad University, Abhar, Iran

3 Electrical Engineering Department, Amirkabir University of Technology, Tehran, Iran

Abstract

For transformer designers, split-winding transformer modeling in different frequency ranges is of great importance. In this paper, for the first time, a multi-conductor transmission line model is proposed for high-frequency modeling of the split-winding transformer. In this model, all the turns in layers and disks have been considered and the model's parameters have been calculated using the finite element method. In order to validate the proposed model, the results are compared with the result of a model, which is based on finite element and coupled field-circuit. It is shown that the introduced model has good accuracy and it can be employed for split-winding transformer modeling in different frequency ranges. In addition, using the validated multi-conductor transmission line model, the frequency response of the split-winding transformer and disk-to-disk short circuit fault are analyzed.

Keywords

References

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International Journal of Engineering
Volume 34, Issue 6
TRANSACTIONS C: Aspects
June 2021
Pages 1486-1492

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