Using Cross-Correlation Coefficients to Analyze Transformer Sweep Frequency Response Analysis (SFRA) Traces

Sweep frequency response analysis (SFRA) is one of the most powerful diagnostic tools for assessing mechanical damage to a transformer winding. Analysis of the results, which are in the form of frequency response traces can, however, be daunting to new users. One approach is to attempt automated ana...

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Bibliographic Details
Published in2007 IEEE Power Engineering Society Conference and Exposition in Africa - PowerAfrica pp. 1 - 6
Main Authors Kennedy, G.M., McGrail, A.J., Lapworth, J.A.
Format Conference Proceeding
LanguageEnglish
Japanese
Published IEEE 01.07.2007
Subjects
Circuit faults
Frequency response
IEC standards
Impedance measurement
Insulators
Laboratories
Low voltage
Power transformers
Testing
Transformer cores
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Summary:Sweep frequency response analysis (SFRA) is one of the most powerful diagnostic tools for assessing mechanical damage to a transformer winding. Analysis of the results, which are in the form of frequency response traces can, however, be daunting to new users. One approach is to attempt automated analysis, and this paper presents an approach using cross- correlation coefficients. This is a power signal processing tool that can simplify result interpretation in some cases and allow limits to be created.
ISBN:1424414776
9781424414772
DOI:10.1109/PESAFR.2007.4498059