Electric field calculations for needle-plane geometry and space charge in polyethylene

Author

Cisse, L. ; Bamji, S.S. ; Bulinski, A.T.

Author_Institution

Nat. Res. Council of Canada, Ottawa, Ont., Canada

Volume

10

Issue

1

fYear

2003

Firstpage

176

Lastpage

180

Abstract

Electric fields in polymeric insulation are calculated with the boundary element method (BEM) in the presence and absence of space charge. A 3-D version of the BEM software is employed to determine the profiles of divergent electric fields produced by metallic and semicon needles embedded in the polymeric insulation. It is shown that the value of the electric field in the insulation decreases rapidly and within 5 μm from the tip it is less than 50% of its initial value. The BEM can also provide 3D profiles of the electric field distributions in the presence of space charge.

Keywords

boundary-elements methods; electric fields; electrodes; organic insulating materials; polymers; space charge; 3D electric field distribution profiles; BEM; boundary element method; divergent electric fields; electric field calculations; metallic needles; needle-plane geometry; polyethylene; polymeric insulation; semicon needles; space charge; Boundary element methods; Computational geometry; Councils; Dielectrics and electrical insulation; Finite difference methods; Needles; Plastic insulation; Polyethylene; Polymers; Space charge;

fLanguage

English

Journal_Title

Dielectrics and Electrical Insulation, IEEE Transactions on

Publisher

ieee

ISSN

1070-9878

Type

jour

DOI

10.1109/TDEI.2003.1176587

Filename

1176587