Application of dry-air insulating media in 170kV GIS

Author

Madarász, György A. ; Choi, Byung Hwa ; Lee, Joo-Yeong

Author_Institution

Hyundai Technol. Center Hungary, Budapest, Hungary

fYear

2011

fDate

5-8 June 2011

Firstpage

128

Lastpage

131

Abstract

Dry-air is a promising insulating medium for substituting the SF6 gas in industrial devices. The lower insulating performance of dry-air was compensated by moderate increase of service pressure and careful optimization of electric field within high voltage gas insulated switchgears (GIS). In addition to the insulating feature the different heat-transport characteristics of dry-air were also considered. The electric field distribution was simulated and compared with impulse test results on a compressed dry-air insulated integrated disconnector-earthing switch unit. The aim of development was to find a technically and economically optimal solution, which is equivalent to the SF₆ gas insulated switchgear unit.

Keywords

electric breakdown; gas insulated switchgear; insulating materials; GIS; dry-air insulating media; electric field distribution; high voltage gas insulated switchgears; voltage 170 kV; Electric fields; Electrodes; Flashover; Sulfur hexafluoride; Voltage measurement; air-insulation; electric breakdown; gas insulated switchgear;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Insulation Conference (EIC), 2011

Conference_Location

Annapolis, MD

ISSN

pending

Print_ISBN

978-1-4577-0278-5

Electronic_ISBN

pending

Type

conf

DOI

10.1109/EIC.2011.5996131

Filename

5996131