Dynamic model of a surge arrester for computer calculation of lightning performance of substations

Author

Bickford, J.P. ; Doone, R.M. ; Ritchie, W.M. ; Savic, M.S. ; Shami, T.A. ; Smith, C.T.

Author_Institution

University of Manchester Institute of Science and Technology, Department of Electrical Engineering and Electronics, Manchester, UK

Volume

131

Issue

7

fYear

1984

fDate

11/1/1984 12:00:00 AM

Firstpage

357

Lastpage

362

Abstract

The characteristics of the silicon carbide blocks of surge arresters are time-dependent because of the inductance and negative temperature coefficient of the silicon carbide. A simple but realistic model to express these characteristics is proposed. The model, developed from routine test results, represents the decay in discharge voltage as time-dependent instead of separating it into inductive and heating effects. Using this model, the effect of a lightning stroke to a gas-insulated substation, under various conditions, is analysed by a computer program to show that the method adopted to represent the block characteristics has an effect on the calculated overvoltages.

Keywords

dynamic response; electrical engineering computing; lightning protection; overvoltage protection; power system protection; substations; surge protection; block characteristics; computer calculation; computer program; dynamic model; gas-insulated substation; lightning performance; lightning stroke; overvoltages; power system protection; silicon carbide blocks; substations; surge arrester; surge protection;

fLanguage

English

Journal_Title

Generation, Transmission and Distribution, IEE Proceedings C

Publisher

iet

ISSN

0143-7046

Type

jour

DOI

10.1049/ip-c.1984.0048

Filename

4643810