Title :
Electrical discharge in an air gap with dielectric-covered electrodes
Author :
Serdyuk, Yu.V. ; Gubanski, S.M. ; Blennow, J. ; Sjöberg, M.
Author_Institution :
Dept. of Electric. Power Eng., Chalmers Univ. of Technol., Goteborg, Sweden
Abstract :
Results of numerical simulations of discharge development in an air gap between electrodes covered with solid dielectric are reported. Temporal and spatial variations of gas discharge parameters, dynamics of surface charge accumulation on dielectric barriers and the corresponding behavior of electric field in the gas gap and in the dielectric layers are presented and discussed. Evaluation of calculated data allowed explaining phenomena observed experimentally in the similar electrode system with solid dielectric barriers, leading, in particular, to significant improvement of dielectric strength of the whole system
Keywords :
Poisson equation; air gaps; electric strength; electron attachment; electron avalanches; surface charging; Poisson equation; air gap; avalanche development; dielectric barriers; dielectric strength; dielectric-covered electrodes; diffusive-drift approach; electric discharge development; electron attachment coefficient; gas discharge parameters; numerical simulations; quasi 2D model; spatial variations; streamer formation; surface charge accumulation; temporal variations; Anodes; Breakdown voltage; Dielectrics and electrical insulation; Electrodes; Electrons; Equations; Ionization; Numerical simulation; Power engineering and energy; Solids;
Conference_Titel :
Electrical Insulation and Dielectric Phenomena, 2000 Annual Report Conference on
Conference_Location :
Victoria, BC
Print_ISBN :
0-7803-6413-9
DOI :
10.1109/CEIDP.2000.885309
