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Nondestructive fault diagnosis of a transformer using transfer function method

Title
Nondestructive fault diagnosis of a transformer using transfer function method
Authors
Park, TJKim, JWKim, SWPark, P박부견
Date Issued
Jan-2004
Publisher
TRANS TECH PUBLICATIONS LTD
Abstract
A transformer is one of the most important units in the power networks. Thus a breakdown of a transformer faults can cause costly repairs. To avoid this, its reliable operation has great significance and, therefore, the diagnosis system of the transformer is necessitated. The dissolved gas-in-oil analysis (DGA) is very popular diagnostic method, but is not a proper technique to identify mechanical faults. The transformer has a unique transfer function independent of the shape of the input waveform, which can be evaluated through sweep test. This transfer function changes by faults. hi this paper, a new transformer diagnosis algorithm using proposed signal processing and comparison criteria is suggested.
Keywords
transformer; fault diagnosis; transfer function method; spectral analysis
URI
http://oasis.postech.ac.kr/handle/2014.oak/17705
ISSN
1013-9826
Article Type
PROCEEDINGS PAPER
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