A time-dependent model of partial discharges in voids

J.M. Wetzer, J.T. Kennedy, E.H.R. Gaxiola

Onderzoeksoutput: Hoofdstuk in Boek/Rapport/CongresprocedureConferentiebijdrageAcademicpeer review

Samenvatting

A time-dependent, hydrodynamic, model of partial discharges in voids in dielectrics is presented. The partial discharge is regarded as a space charge dominated electron avalanche. The model incorporates the relevant collisional and radiative processes in the void and at its boundary, and the field distortion due to the presence of space charge and void surface charges. Also the coupling with the external circuit is taken into account. Model simulations show that, as a result of field quenching, the associated charge versus applied field shows saturation above a certain threshold. The threshold field depends on geometry and initial electron number, but is higher than the inception values usually quoted. The saturation charge may deviate by a factor of 2-10 from values obtained with simplified models.
Originele taal-2Engels
TitelGaseous dielectrics VII : proceedings of the seventh international symposium on gaseous dielectrics, Knoxville, Tennessee, USA, April 24-28, 1994
RedacteurenL.G. Christophorou, D.R. James
Plaats van productieNew York, NY
UitgeverijPlenum Press
Pagina's231-238
ISBN van geprinte versie0-306-44984-6
StatusGepubliceerd - 1994
Evenementconference; Gaseous Dielectrics VII, Proc. 7th International Symposium on Gaseous Dielectrics, Knoxville, TN, 1 April 1994 -
Duur: 1 jan 1994 → …

Congres

Congresconference; Gaseous Dielectrics VII, Proc. 7th International Symposium on Gaseous Dielectrics, Knoxville, TN, 1 April 1994
Periode1/01/94 → …
AnderGaseous Dielectrics VII, Proc. 7th International Symposium on Gaseous Dielectrics, Knoxville, TN, 1 April 1994

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