DocumentCode
1129101
Title
A discharge-avalanche theory for the propagation of electrical trees. A physical basis for their voltage dependence
Author
Fothergill, J.C. ; Dissado, L.A. ; Sweeney, P.J.J.
Author_Institution
Dept. of Eng., Leicester Univ., UK
Volume
1
Issue
3
fYear
1994
fDate
6/1/1994 12:00:00 AM
Firstpage
474
Lastpage
486
Abstract
The voltage dependence of electrical tree propagation from both recessed voids and embedded needle electrodes is described in terms of a quantitatively expressed physical model. Voltage dependent changes in the fractal dimension of the trees are used to explain the nonmonotonic behavior observed in the embedded needle geometry. The relationship of the model to inverse power law and `Z´ lifeline characteristics is briefly discussed
Keywords
electric breakdown of gases; electron avalanches; fractals; partial discharges; Z lifeline characteristics; discharge-avalanche theory; electrical trees; embedded needle electrodes; fractal dimension; inverse power law; nonmonotonic behavior; partial discharges; physical model; recessed voids; tree propagation; Educational institutions; Electrodes; Fluctuations; Fractals; Geometry; Needles; Physics; Shape; Trees - insulation; Voltage;
fLanguage
English
Journal_Title
Dielectrics and Electrical Insulation, IEEE Transactions on
Publisher
ieee
ISSN
1070-9878
Type
jour
DOI
10.1109/94.300291
Filename
300291
Link To Document