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Partial discharge monitoring for power transformers using UHF sensors Part 2: Field experience

Judd, M.D. and Yang, Li and Hunter, I.B.B. (2005) Partial discharge monitoring for power transformers using UHF sensors Part 2: Field experience. IEEE Electrical Insulation Magazine, 21 (3). pp. 5-13. ISSN 0883-7554

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Abstract

Because of the large capital value of power transformers and their critical role in the electricity network, there is an increasing need for non-intrusive diagnostic and monitoring tools to assess their internal condition. The UHF technique is being applied increasingly to monitor partial discharges (PD) in power transformers and has been shown to be much more sensitive than acoustic techniques when the signal path passes through solid insulation. Field trials were performed on five power transformers ranging in size from 18 to 1000 MVA and in voltage from 25 to 400 kV. The results of PD tests on power transformers provide sufficient evidence to justify making provision for UHF sensors on new transformers to facilitate their monitoring when required during the service lifetime.

Item type: Article
ID code: 7102
Keywords: power transformers, electricity networks, diagnostic tools, UHF sensors, electrical insulation, Electrical engineering. Electronics Nuclear engineering, Electronic, Optical and Magnetic Materials, Electrical and Electronic Engineering
Subjects: Technology > Electrical engineering. Electronics Nuclear engineering
Department: Faculty of Engineering > Electronic and Electrical Engineering
Related URLs:
    Depositing user: Strathprints Administrator
    Date Deposited: 08 Nov 2008
    Last modified: 04 Sep 2014 16:48
    URI: http://strathprints.strath.ac.uk/id/eprint/7102

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