Title :
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
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;
Conference_Titel :
Electrical Insulating Materials, 2001. (ISEIM 2001). Proceedings of 2001 International Symposium on
Conference_Location :
Himeji
Print_ISBN :
4-88686-053-2
DOI :
10.1109/ISEIM.2001.973685
