Surface charge accumulation in a dielectric-covered electrode system in air

Author

Sjöberg, M. L Å ; Rein, C. ; Gubanski, S.M. ; Leijon, M. Å S

Author_Institution

Dept. of Electr. Power Eng., Chalmers Univ. of Technol., Goteborg, Sweden

fYear

2001

fDate

2001

Firstpage

399

Lastpage

402

Abstract

This paper´s focus is an experimental study of the charging process in a plane-parallel disc shaped electrode system during applications of unipolar impulse voltages. Discharge current measurements together with surface charge assessments during single impulse as well as sequence of impulses of both polarities, and at various air gap widths are presented. The objective was to quantify the distribution of electric field in the combined dielectric structure in order to evaluate the general applicability of the method. Experimentally obtained results are compared with predictions from theoretical models

Keywords

dielectric relaxation; electric charge; electric strength; electrodes; surface charging; air gap widths; charging process; combined dielectric structure; discharge current measurements; electric field distribution; plane-parallel disc shaped electrode system; surface charge assessments; unipolar impulse voltages application; Charge measurement; Coatings; Current measurement; Dielectrics and electrical insulation; Electrodes; Electrostatic measurements; Surface charging; Surface discharges; Testing; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Insulating Materials, 2001. (ISEIM 2001). Proceedings of 2001 International Symposium on

Conference_Location

Himeji

Print_ISBN

4-88686-053-2

Type

conf

DOI

10.1109/ISEIM.2001.973685

Filename

973685