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Partial discharge investigation of a power transformer using wireless wideband radio-frequency measurements

Moore, P.J. and Portugues, I. and Glover, I.A. (2006) Partial discharge investigation of a power transformer using wireless wideband radio-frequency measurements. IEEE Transactions on Power Delivery, 21 (1). pp. 528-530. ISSN 0885-8977

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Abstract

The remote detection of a transformer internal partial discharge (PD) has been demonstrated using mobile wideband radio-frequency receiving equipment. The PD is externally detectable due to coupling within the transformer tank, causing impulsive signals to be radiated from external connections. A wideband direction-finding technique using a four-antenna array has shown the source of the radiation to be the tertiary winding connections; the radiated impulse has characteristics typical of this method of emission. No other external site of radiation from the transformer was detected. Due to the lack of coupling to the primary and secondary windings, it is believed that the PD is present between the tertiary windings and the core.

Item type: Article
ID code: 4685
Keywords: condition monitoring, location, partial discharges, power transformers, radiometric measurements, electrical systems, Electrical engineering. Electronics Nuclear engineering
Subjects: Technology > Electrical engineering. Electronics Nuclear engineering
Department: Faculty of Engineering > Electronic and Electrical Engineering
Related URLs:
    Depositing user: Strathprints Administrator
    Date Deposited: 09 Nov 2007
    Last modified: 06 Dec 2013 18:46
    URI: http://strathprints.strath.ac.uk/id/eprint/4685

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