Pollution performance of 110 kV metal oxide arresters

Author

Chrzan, Krystian ; Pohl, Zbigniew ; Grzybowski, Stan ; Köhler, Wolfgang

Author_Institution

Dept. of Electr. Eng., Tech. Univ. Wroclaw, Poland

Volume

12

Issue

2

fYear

1997

fDate

4/1/1997 12:00:00 AM

Firstpage

728

Lastpage

733

Abstract

Pollution test results of single-unit 110 kV metal oxide surge arresters with porcelain housing according to the solid layer and salt fog methods are presented. During 6 hours of testing, the internal and external charge and maximum temperature along the varistor column were measured. The formation of single stable dry bands on the housing was often observed especially during salt fog tests. In such cases, the varistor temperature can reach about 70°C. The simple electrical model of the arrester enabling calculations of voltages and currents as a function of arrester and pollution parameters is shown

Keywords

arresters; charge measurement; electric breakdown; insulation testing; temperature measurement; thermal analysis; varistors; 110 kV; 6 h; 70 C; electrical model; external charge; insulation breakdown testing; internal charge; maximum temperature; metal-oxide surge arresters; pollution performance tests; porcelain housing; salt fog tests; solid layer tests; varistor column; Arresters; Charge measurement; Current measurement; Pollution; Porcelain; Solids; Surges; Temperature; Testing; Varistors;

fLanguage

English

Journal_Title

Power Delivery, IEEE Transactions on

Publisher

ieee

ISSN

0885-8977

Type

jour

DOI

10.1109/61.584358

Filename

584358