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  • Locating inter-disc faults in transformer winding using frequency response analysis

    Author(s)
    Yousof, M.F.M.
    Ekanayake, Chandima
    Saha, Tapan
    Griffith University Author(s)
    Ekanayake, Chandima MB.
    Year published
    2013
    Metadata
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    Abstract
    Frequency response analysis (FRA) is a technique for evaluating the mechanical integrity of power transformers. This paper proposes a methodology to locate inter-disc fault in a transformer winding through FRA measurements. A core-type three phase transformer is used for simulating faults on several locations along the interleaved winding, from top to bottom end. Correlation coefficient, vector fitting and Nyquist plot are employed to assist in the analysis. By drawing the transfer function of the winding response on Nyquist plot, key information is extracted and two equations are developed to locate the fault.Frequency response analysis (FRA) is a technique for evaluating the mechanical integrity of power transformers. This paper proposes a methodology to locate inter-disc fault in a transformer winding through FRA measurements. A core-type three phase transformer is used for simulating faults on several locations along the interleaved winding, from top to bottom end. Correlation coefficient, vector fitting and Nyquist plot are employed to assist in the analysis. By drawing the transfer function of the winding response on Nyquist plot, key information is extracted and two equations are developed to locate the fault.
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    Conference Title
    2013 Australasian Universities Power Engineering Conference
    DOI
    https://doi.org/10.1109/AUPEC.2013.6725454
    Subject
    Electrical and Electronic Engineering not elsewhere classified
    Publication URI
    http://hdl.handle.net/10072/338850
    Collection
    • Conference outputs

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