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    Impact of Power Transformer Insulating Mineral Oil Degradation on FRA Polar Plot

    228181.pdf (1.357Mb)
    Access Status
    Open access
    Authors
    Aljohani, O.
    Abu-Siada, Ahmed
    Date
    2015
    Type
    Conference Paper
    
    Metadata
    Show full item record
    Citation
    Aljohani, O. and Abu-Siada, A. 2015. Impact of Power Transformer Insulating Mineral Oil Degradation on FRA Polar Plot, in Proceedings of the 24th International Symposium on Industrial Electronics, Jun 3-5 2015, pp. 567-572. Buzios, Rio de Janeiro: IEEE.
    Source Title
    International Symposium on Industrial Electronics
    Source Conference
    International Symposium on Industrial Electronics
    DOI
    10.1109/ISIE.2015.7281530
    ISBN
    9781467375535
    School
    Department of Electrical and Computer Engineering
    Remarks

    Copyright © 2015 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.

    URI
    http://hdl.handle.net/20.500.11937/17663
    Collection
    • Curtin Research Publications
    Abstract

    Frequency response analysis (FRA) has been employed as an effective tool for the detection of various mechanical winding and core deformations within electrical power transformer. Traditional FRA signature interpretation relies on the magnitude of the FRA plot although all practical frequency response analyzers are able to provide both magnitude and angle of the FRA signal in wide frequency range. Moreover, no attention has been given to the impact of power transformer insulating oil degradation on the FRA signature. This paper presents is aimed at introducing a new interpretation approach of the FRA signature using polar plot which is obtained by incorporating FRA signature magnitude and phase into one plot. The paper also investigates the impact of insulating mineral oil degradation on the proposed polar plot signature. Digital image processing (DIP) technique is developed to automate the interpretation process. In this regard, the physical geometrical dimension of a single-phase transformer filled with insulating mineral oil is simulated using three-dimensional finite element analysis to emulate real transformer operation. FRA polar plot signatures are measured and analyzed for various health conditions of the mineral oil. Results show that insulating mineral oil degradation has an impact on the transformer FRA polar plot signature. The proposed FRA polar plot technique is easy to implement within any frequency response analyzer.

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    • Application of digital image processing to detect transformer bushing faults and oil degradation using FRA polar plot signature
      Aljohani, O.; Abu-Siada, Ahmed (2017)
      Frequency Response Analysis (FRA) technique is commonly used to assess the mechanical integrity of power transformer core and windings. A few papers investigating the ability of FRA technique to detect bushing faults and ...
    • Impact of Insulating Oil Degradation on the Power Transformer Frequency Response Analysis
      Aljohani, O.; Abu-Siada, Ahmed; Islam, Syed (2015)
      Frequency Response Analysis (FRA) has become a reliable tool to detect mechanical deformation within power transformers. Many researchers have investigated the impact of various mechanical winding and core deformations ...
    • Experimental evaluation of detecting power transformer internal faults using FRA polar plot and texture analysis
      Zhao, X.; Yao, C.; Li, C.; Zhang, C.; Dong, S.; Abu-Siada, Ahmed; Liao, R. (2019)
      Power transformers are prone to short circuit faults and external harsh environmental conditions that may result in various internal winding and core deformations. Frequency response analysis (FRA) is the current technique ...
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