|2/2011 - 4|
A New Method for Detection and Evaluation of Winding Mechanical Faults in Transformer through Transfer Function MeasurementsBIGDELI, M. , VAKILIAN, M. , RAHIMPOUR, E.
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transformer, fault diagnosis, measurement, transfer function, vector fitting
power(27), transformer(18), winding(17), frequency(12), analysis(11), transfer(10), response(10), function(10), delivery(9), deformation(9)
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About this article
Date of Publication: 2011-05-30
Volume 11, Issue 2, Year 2011, On page(s): 23 - 30
ISSN: 1582-7445, e-ISSN: 1844-7600
Digital Object Identifier: 10.4316/AECE.2011.02004
Web of Science Accession Number: 000293840500004
SCOPUS ID: 79958858543
Transfer function (TF) is an acknowledged method for power transformer mechanical faults detection. However the past published works mostly discovered how to specify the faults levels and paid less attention to detection of the type of faults using comparison of TFs. whereas, it seems important for most of the applications to specify the type of fault without opening the unit. This paper presents a new method based on vector fitting (VF) to compare the TFs and specify the type, level and location of the fault. For development of the method, and its verification the required measurements are carried out on four model transformers; under intact condition, and under different fault conditions (axial displacement, radial deformation, disc space variation and short circuit of winding) and the TFs are determined. Employing VF, the coefficients of TFs are determined with the required accuracy. Using those coefficients, a new index is introduced to specify the type, level and location of the fault in the winding. Convincingly good results were obtained. Therefore it is believed that this finding could be helpful in fault diagnosis in actual power transformer windings.
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 Locating inter-disc faults in transformer winding using frequency response analysis, Yousof, M. F. M., Ekanayake, C., Saha, T. K., 2013 Australasian Universities Power Engineering Conference (AUPEC), ISBN 978-1-86295-913-2, 2013.
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 A feasibility study on application of positioning sensors to online detect of the transformer winding axial displacement, Mousavi, Seyed Amidedin, Bigdeli, Mehdi, Mousavi, Seyed Majid, 2013 IEEE Symposium on Industrial Electronics & Applications, ISBN 978-1-4799-1125-7, 2013.
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 Study of transformer winding deformation by frequency response analysis, Yousof, M. F. M., Ekanayake, C., Saha, T. K., 2013 IEEE Power & Energy Society General Meeting, ISBN 978-1-4799-1303-9, 2013.
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 Using the complex values of the frequency response to improve power transformer diagnostics, Samimi, M. H., Tenbohlen, S., Akmal, A. A. Shayegani, Mohseni, H., 2016 24th Iranian Conference on Electrical Engineering (ICEE), ISBN 978-1-4673-8789-7, 2016.
Digital Object Identifier: 10.1109/IranianCEE.2016.7585793 [CrossRef]
 Effect of different terminating resistors on the FRA method sensitivity, Samimi, M. H., Tenbohlen, S., Akmal, A. A. Shayegani, Mohseni, H., Joneidi, I. Ahmadi, 2015 30th International Power System Conference (PSC), ISBN 978-1-5090-2705-7, 2015.
Digital Object Identifier: 10.1109/IPSC.2015.7827745 [CrossRef]
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