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Characterisation of PD occurring in injected air bubbles in block polymeric insulation

Adhikari, Dipasree, Hepburn, D. M. and Stewart, B. G. 2012. Characterisation of PD occurring in injected air bubbles in block polymeric insulation. Presented at: IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP), Montreal, Canada, 14-17 October 2012. Electrical Insulation and Dielectric Phenomena (CEIDP), 2012 Annual Report Conference on. IEEE, pp. 48-51. 10.1109/CEIDP.2012.6378719

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Gas filled cavities in solid insulation can form during production and are likely to have initial spherical or ellipsoidal geometry; as degradation takes place the shape will distort. Due to the difficulties of producing spherical and ellipsoidal cavity shapes most previous partial discharge (PD) measurements, in polymeric insulations, have used a layered polymer sandwich approach to create flat cylindrical voids. A series of experiments is carried out on air bubble voids inside block polymeric insulation. This paper will investigate and compare the PD repetition rate, PD magnitude, PD distribution plots and the total charge injection in each void for samples with varying sizes of the air bubble. The PD characteristics recorded from these air bubble arrangements will also be compared to those obtained from layered polymer models of similar dimensions. Comparison of the natural and layered void results will provide information on validity of sample production methods.

Item Type: Conference or Workshop Item (Paper)
Status: Published
Schools: Engineering
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering
Publisher: IEEE
ISBN: 9781467312530
ISSN: 0084-9162
Last Modified: 19 Mar 2016 23:19

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