Title :
Numerical model describing the effect(s) of a barrier and the space charge fields on the electrical strength of a point-plane air gap using the finite elements
Author :
Mokhnache, L. ; Boubakeur, A. ; Boukhthache, S.
Author_Institution :
Inst. of Electr. Eng., Batna Univ., Algeria
Abstract :
In this paper, we have computed fields of the positive ions and electrons created at the head of avalanche in a positive point-barrier-plane air gap. The polarisation field effect of the dielectric is taken into account. The general problem will be formulated with finite elements and it is focussed on the polarisation field formulation. It was found that the effect of the two space charge fields is to reduce the breakdown voltage
Keywords :
air gaps; avalanche breakdown; dielectric polarisation; electric strength; finite element analysis; space charge; barrier; breakdown voltage; dielectric polarisation; electrical strength; electronic avalanche; finite element method; numerical model; point-plane air gap; space charge field; Calculus; Clouds; Dielectrics; Electrodes; Electrons; Erbium; Numerical models; Polarization; Space charge; Stress;
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.2000.883999
