Partial discharge. XVI. Ultrasonic sensing of PD within large capacitors

descriptionPublicationkeyboard_double_arrow_right Article 01 May 1993Publisher:Institute of Electrical and Electronics Engineers (IEEE)Journal:IEEE Electrical Insulation Magazine, volume 9, pages 21-28 (issn: 0883-7554,

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Authors: R. Harrold;

doi: 10.1109/57.216784

Partial discharge. XVI. Ultrasonic sensing of PD within large capacitors

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Abstract

For pt.XV see ibid., vol.8, no.6, p.37 et seq. (1993). High-voltage capacitor technology is reviewed, and the characteristics of partial discharges (PDs) in these capacitors, the PD's ultrasonic signatures, and the effects of acoustic attenuation within capacitor windings are discussed. This discussion forms the basis for an analysis of ultrasonic instrument design as related to PD detection in capacitors. The calibration and verification of proper operation required of all PD measuring systems are described. Some data from acoustic PD measurements of field-installed capacitors are presented. >

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