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Mathematical Comparison Methods to Assess Transfer Functions of Transformers to Detect Different Types of Mechanical Faults

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3 Author(s)
Rahimpour, E. ; Power Products Div., ABB AG, Bad Honnef, Germany ; Jabbari, M. ; Tenbohlen, S.

The transfer function (TF) these days is a well-known method to detect different types of mechanical damage in power transformers. The most important mechanical faults mentioned by the authors and researchers, which are most likely to be detected using the TF and occur frequently in transformers, are disc-space variation, radial deformation, and axial displacement. These faults are investigated in this paper using three different similar-size test objects. Since the TF method is a comparative method and the measured results should be compared with the reference results, some mathematical methods are studied to compare different TFs. A complete fault detection, which means determining the type, location, and level of the faults by using TF analyses is the main aim of this paper.

Published in:

Power Delivery, IEEE Transactions on  (Volume:25 ,  Issue: 4 )

Date of Publication:

Oct. 2010

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