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Application of Digital Image Processing to Diagnose Transformer Winding Deformation using FRA Polar Plot

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Authors
Aljohani, O.
Abu-Siada, Ahmed
Islam, Syed
Date
2014
Type
Conference Paper

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Citation
Aljohani, O. and Abu-Siada, A. and Islam, S. 2014. Application of Digital Image Processing to Diagnose Transformer Winding Deformation using FRA Polar Plot, in CMD 2014 (ed), International Conference on Condition Monitoring and Diagnosis, CMD 2014, Sep 21 2014. Jeju, Korea: CMD 2014.
Source Title
CMD 2014 flash memory
Source Conference
International Conference on Condition Monitoring and Diagnosis, CMD 2014
School
Department of Electrical and Computer Engineering
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Abstract

Digital image processing (DIP) technique has been growing rapidly as an essential tool to interpret various image features for many applications of science and engineering. Condition monitoring and diagnosis are considered the main areas that relay on DIP. Frequency response analysis (FRA) technique has become a popular and reliable diagnostic tool in detecting various winding deformations within power transformers. However, interpretation of FRA signatures still requires high expertise because of its reliance on graphical analysis. This paper presents a new technique for the interpretation of transformers FRA signatures. The proposed technique relies on incorporating both magnitude and angle of the FRA signature in one polar plot, which is manipulated to extract some unique features using DIP techniques. The proposed technique can assess in identifying and quantifying various winding deformation within power transformers. The proposed technique is easy to implement in any frequency response analyser.