A model of the electrical breakdown process due to electrical treeing growth

Author

Bozzo, R. ; Guastavino, F. ; Tommasini, D.

Author_Institution

Dept. of Electr. Eng., Genoa Univ., Italy

fYear

1989

Firstpage

412

Lastpage

416

Abstract

The authors develop a mathematical model that can describe the electrical breakdown due to electrical treeing growth in point-plane electrode specimens of thermoplastic polymers subjected to AC voltage ramps. The damage due to the tree growth is modeled as a conductive sphere, allowing an easy computation of the geometrical field in front of it. The breakdown voltage V_BD, the radius of the sphere R_b, and the electric field on the sphere AE_b are related by means of the simple equation V_BD(D)=AE_b×R _b(D), where D is the interelectrode gap. The model has been verified experimentally

Keywords

electric breakdown of solids; organic insulating materials; polymers; AC voltage ramps; breakdown voltage; conductive sphere; electrical breakdown; electrical treeing growth; interelectrode gap; mathematical model; point-plane electrode; thermoplastic polymers; Breakdown voltage; Dielectric breakdown; Dielectrics and electrical insulation; Electric breakdown; Electrodes; Materials testing; Microscopy; Needles; Shape measurement; Trees - insulation;

fLanguage

English

Publisher

ieee

Conference_Titel

Conduction and Breakdown in Solid Dielectrics, 1989., Proceedings of the 3rd International Conference on

Conference_Location

Trondheim

Type

conf

DOI

10.1109/ICSD.1989.69231

Filename

69231