Transient overvoltage study and model for shell-type power transformers

Author

Woivre, V. ; Arthaud, J.P. ; Ahmad, A. ; Burais, N.

Author_Institution

Jeumont Schneider Transformateurs, Lyon, France

Volume

8

Issue

1

fYear

1993

fDate

1/1/1993 12:00:00 AM

Firstpage

212

Lastpage

222

Abstract

In order to calculate winding resonances of shell-type power transformers under lightning impulses, an accurate RLC model of the transformer taking into account frequency dependence, is presented. RLC parameters are calculated using analytical and finite element methods. An interactive computer model has been developed and allows automatic generation and calculation of the network elements. The classical network method is used for the frequency study. Transient overvoltages of the transformer are calculated from the frequency response by Fourier transform. Good agreement between experimental and numerical results shows that the model is well adapted to predict windings overvoltages

Keywords

Fourier transforms; finite element analysis; frequency response; lightning; overvoltage; power engineering computing; power transformers; transformer windings; transients; FEM; Fourier transform; RLC model; classical network method; finite element methods; frequency response; lightning impulses; power engineering computing; power transformers; transient overvoltages; winding resonances; Computer networks; Finite element methods; Fourier transforms; Frequency dependence; Frequency response; Lightning; Power transformers; Predictive models; Resonance; Voltage control;

fLanguage

English

Journal_Title

Power Delivery, IEEE Transactions on

Publisher

ieee

ISSN

0885-8977

Type

jour

DOI

10.1109/61.180339

Filename

180339