Reduced order model for transformer transients

Author

De Leon, Francisco ; Semlyen, Adam

Author_Institution

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

Volume

7

Issue

1

fYear

1992

fDate

1/1/1992 12:00:00 AM

Firstpage

361

Lastpage

369

Abstract

A complete model for transformers is derived on the basis of very efficiently calculated elementary (turn-to-turn) parameters. A high-order turn-to-turn model is constructed for the windings. This model is reduced to a lower order by operating on the resulting matrices. An electric equivalent circuit for the core is obtained from the principle of duality. By the use of test turns the winding model is interfaced with the iron-core. For validation, the frequency response of the model has been compared with test results. The model for the calculation of transients has the form of a Norton equivalent circuit and it can easily be incorporated in a power system transients program such as the EMTP. Examples of calculated transients are given for illustration and further validation

Keywords

power transformers; transformer cores; transformer windings; transients; EMTP; Norton equivalent circuit; core; frequency response; power system transients program; reduced order model; transformer transients; turn-to-turn model; windings; Circuit faults; Circuit testing; Electromagnetic transients; Equivalent circuits; Inductance; Magnetic circuits; Power system modeling; Power system transients; Power transformers; Reduced order systems;

fLanguage

English

Journal_Title

Power Delivery, IEEE Transactions on

Publisher

ieee

ISSN

0885-8977

Type

jour

DOI

10.1109/61.108930

Filename

108930