Discharges from moving particles in GIS [gas-insulated switchgear]

Author

Holmberg, Magnus E. ; Gubanski, Stanislaw M.

Author_Institution

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

Volume

13

Issue

1

fYear

1998

fDate

1/1/1998 12:00:00 AM

Firstpage

17

Lastpage

22

Abstract

The study of the motion of moving metallic particles in GIS requires a good knowledge of the carried charge of the particle. In this paper, measurements of the charging process of a moving particle, performed in a realistic single-phase GIS, are presented. By measuring the charge impulses and the voltage phase at consecutive impacts, it is possible to estimate the carried charge and then compare the results with the existing models of the particle charge. Also, besides the discharges from in-flight corona reported by several authors, it is shown that, for higher voltage levels, several discharges between the particle and the enclosure (outer electrode) can occur as the particle impacts with the enclosure

Keywords

corona; discharges (electric); electric breakdown; gas insulated switchgear; insulation testing; switchgear testing; GIS; charge impulses; discharges; enclosure; gas-insulated switchgear; in-flight corona; moving metallic particles; voltage phase; Charge measurement; Current measurement; Gas insulation; Geographic Information Systems; Particle measurements; Performance evaluation; Phase estimation; Phase measurement; Switchgear; Voltage;

fLanguage

English

Journal_Title

Power Delivery, IEEE Transactions on

Publisher

ieee

ISSN

0885-8977

Type

jour

DOI

10.1109/61.660839

Filename

660839