Fast transients and their effect on transformer insulation: simulation and measurements

Author

De Herdt, H. ; Declercq, J. ; Sels, T. ; Van Craenenbroeck, T. ; Van Dommelen, D.

Author_Institution

Pauwels Trafo Belgium N.V., Belgium

Volume

1

fYear

2001

fDate

2001

Abstract

An increasing number of unusual transformer failures caused by high frequency overvoltages was reported in medium voltage networks. An investigation was started to get a better understanding of these fast transient phenomena. Two major steps in this research project are described here. First, a numerical model is built to compute the occurring overvoltage phenomena. In the second part, the material behaviour at high-frequencies is investigated, in order to determine the allowable voltages across the internal transformer insulation

Keywords

high-frequency transformers; insulation testing; materials testing; numerical analysis; overvoltage; power system faults; power system transients; power transformer insulation; power transformer testing; allowable voltages; fast MV power system transients; fast transient phenomena; high-frequency overvoltages; internal transformer insulation; numerical model; overvoltage phenomena; research project; transformer failures;

fLanguage

English

Publisher

iet

Conference_Titel

Electricity Distribution, 2001. Part 1: Contributions. CIRED. 16th International Conference and Exhibition on (IEE Conf. Publ No. 482)

Conference_Location

Amsterdam

ISSN

0537-9989

Print_ISBN

0-85296-735-7

Type

conf

DOI

10.1049/cp:20010678

Filename

942776