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Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.13/802526

Title
Relating a distribution transformer's connection topology and the influence of inductive disparity to the observed frequency response
Author/Creator
Mitchell, Steven D.;  Welsh, James S.;  Phung, B. T.
Institution
The University of Newcastle. Faculty of Engineering & Built Environment, School of Electrical Engineering and Computer Science
Description
This paper uses generic three phase models to illustrate how the frequency response analysis (FRA) data of distribution transformers with different vector group numbers will be effected by inductive disparity. The inductive disparity of a three phase transformer is a well documented property due to variation in the observed core reluctance of transformer windings on different phases. At low frequency this will result in a subtle inductance inequality between the centre and outer limb windings of the transformer core. Understanding the influence of this disparity is important when analysing the frequency response of the transformer. Frequency Response Analysis data taken from different terminals on the same transformer will display significant variation at low frequencies due to the effects of this inductive disparity. Effects include differences in the self resonant frequency and levels of attenuation. This research facilitates a more comprehensive understanding of the observed responses.
Relation
Australasian Universities Power Engineering Conference 2008 (AUPEC '08). Proceedings of AUPEC '08: Australasian Universities Power Engineering Conference 2008 (Sydney 14-17 December, 2008)
Relation
http://ieeexplore.ieee.org/search/srchabstract.jsp?tp=&arnumber=4812997
Date
2008
Publisher
Institute of Electrical and Electronics Engineers (IEEE)
Keyword(s)
distribution transformers;  frequency response analysis (FRA);  inductive disparity
Resource Type
conference paper
Rights
Copyright © 2008 IEEE. Reprinted from the Proceedings of the AUPEC'08 Australasian Universities Power Engineering Conference. This material is posted here with permission of the IEEE. Such permission of the IEEE does not in any way imply IEEE endorsement of any of the University of Newcastle's products or services. Internal or personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution must be obtained from the IEEE by writing to pubs-permissions@ieee.org. By choosing to view this document, you agree to all provisions of the copyright laws protecting it.
Identifier
http://hdl.handle.net/1959.13/802526
Identifier
ISBN:9780733427152
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"Relating a distribution transformer's connection topology and the influence of inductive disparity to the observed frequency response"
 
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