Complete transformer model for electromagnetic transients

Author

De Leon, Francisco ; Semlyen, Adam

Author_Institution

Dept. of Electr. Eng., Toronto Univ., Ont., Canada

Volume

9

Issue

1

fYear

1994

fDate

1/1/1994 12:00:00 AM

Firstpage

231

Lastpage

239

Abstract

A complete, three phase transformer model for the calculation of electromagnetic transients is presented. The model consists of a set of state equations solved with the trapezoidal rule of integration in order to obtain an equivalent Norton circuit at the transformer terminals. Thus the transformer model can be easily interfaced with an electromagnetic transients program. Its main features are: (a) the basic elements for the winding model are the turns; (b) the complete model includes the losses due to eddy currents in the windings and in the iron core; and (c) the solution of the state equations is obtained in decoupled iterations. For validation, the frequency response of the model is compared with tests on several transformers. Applications to the calculation of transients are given for illustration

Keywords

digital simulation; eddy current losses; equivalent circuits; integration; iterative methods; power engineering computing; power transformers; transformer cores; transformer windings; decoupled iterations; digital simulation; eddy current losses; electromagnetic transients program; equivalent Norton circuit; frequency response; iron core; state equations; three phase transformer model; trapezoidal integration rule; winding model; Circuits; EMTP; Eddy currents; Electromagnetic modeling; Equations; Frequency response; Iron; Phase transformers; Testing; Transformer cores;

fLanguage

English

Journal_Title

Power Delivery, IEEE Transactions on

Publisher

ieee

ISSN

0885-8977

Type

jour

DOI

10.1109/61.277694

Filename

277694