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    Online Transformer Internal Fault Detection Based on Instantaneous Voltage and Current Measurements Considering Impact of Harmonics

    228175_228175.pdf (1.346Mb)
    Access Status
    Open access
    Authors
    Masoum, A.
    Hashemnia, Seyednaser
    Abu-Siada, Ahmed
    Masoum, Mohammad Sherkat
    Islam, Syed
    Date
    2017
    Type
    Journal Article
    
    Metadata
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    Citation
    Masoum, A. and Hashemnia, N. and Abu-Siada, A. and Masoum, M. and Islam, S. 2017. Online Transformer Internal Fault Detection Based on Instantaneous Voltage and Current Measurements Considering Impact of Harmonics. IEEE Transactions on Power Delivery. 32 (2): pp. 587-598.
    Source Title
    IEEE Transactions on Power Delivery
    DOI
    10.1109/TPWRD.2014.2358072
    ISSN
    0885-8977
    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/20.500.11937/46302
    Collection
    • Curtin Research Publications
    Abstract

    This paper investigates the performance of a recently proposed online transformer internal fault detection technique and examines impact of harmonics through detailed nonlinear simulation of a transformer using three-dimensional finite element modelling. The proposed online technique is based on considering the correlation between the instantaneous input and output voltage difference (ΔV) and the input current of a particular phase as a finger print of the transformer that could be measured every cycle to identify any incipient mechanical deformation within power transformers. To precisely emulate real transformer operation under various winding mechanical deformations, a detailed three-dimensional finite-element model is developed. Detailed simulations with (non)sinusoidal excitation are performed and analysed to demonstrate the unique impact of each fault on the ΔV-I locus. Impact of harmonic order, magnitude and phase angle is also investigated. Furthermore, practical measurements have been performed to validate the effect of winding short circuit fault on the proposed ΔV-I locus without and with the impact of system harmonics.

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