DocumentCode :
1186585
Title :
Transfer Function Method to Diagnose Axial Displacement and Radial Deformation of Transformer Winding
Author :
Rahimpour, E. ; Christian, Jason ; Feser, K. ; Mohseni, Hooman
Author_Institution :
Stuttgart University; University of Tehran
Volume :
22
Issue :
8
fYear :
2002
Firstpage :
70
Lastpage :
70
Abstract :
Short circuit currents or forces during transport can cause mechanical displacements of transformer windings. The transfer function method is presented as a tool to detect these displacements. In order to be able to evaluate the measurements, the correlation between the characteristics of transfer functions and possible damages must be known. Axial displacement and radial deformation of transformer windings have been studied-in this research work using two test transformers. The primary winding of the first transformer for axial displacement has 31 double disk coils (1.3 MVA, 10 kV) and the secondary winding is a four-layer winding. The second transformer for the study of radial deformation has 30 double disk coils (1.2 MVA, 10 kV) as primary winding and a one-layer winding as secondary winding. The detailed mathematical models were developed for the test objects and a comparison was carried out between measured and calculated results. It is shown that this model can present the behavior of the transformer windings in the frequency domain in the case of sound and displaced conditions.
Keywords :
Coils; Fuses; Mathematical model; Oil insulation; Power harmonic filters; Protection; Safety; Testing; Transfer functions; Windings; Transfer function; diagnose; mechanical displacements; modeling; transformer windings;
fLanguage :
English
Journal_Title :
Power Engineering Review, IEEE
Publisher :
ieee
ISSN :
0272-1724
Type :
jour
DOI :
10.1109/MPER.2002.4312519
Filename :
4312519
Link To Document :
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