Leakage flux and force calculation on power transformer windings under short-circuit: 2D and 3D models based on the theory of images and the finite element method compared to measurements

Author

Kladas, Antonios G. ; Papadopoulos, Michael P. ; Tegopoulos, John A.

Author_Institution

Electr. Power Div., Nat. Tech. Univ. of Athens, Greece

Volume

30

Issue

5

fYear

1994

fDate

9/1/1994 12:00:00 AM

Firstpage

3487

Lastpage

3490

Abstract

The paper compares different techniques based on the theory of images and the finite element method enabling to calculate the leakage field and the static electromagnetic forces on the windings of power transformers. The models developed have been applied to the one phase part of a three phase shell type power transformer and the results are verified experimentally. Both cases, that of approximate two dimensional analysis and the three dimensional configuration, have been studied. A particular three dimensional finite element formulation involving only a scalar potential was found to be suitable for this class of problems

Keywords

electromagnetic fields; finite element analysis; magnetic flux; magnetic leakage; power transformers; short-circuit currents; transformer windings; 2D model; 3D model; FEM; finite element method; force calculation; leakage field; leakage flux calculation; power transformer windings; scalar potential; short-circuit conditions; static electromagnetic forces; theory of images; three dimensional configuration; three phase shell type; two dimensional analysis; Conducting materials; Electric variables measurement; Electromagnetic forces; Finite element methods; Geometry; Phase transformers; Power measurement; Power transformers; Prototypes; Transformer cores;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.312690

Filename

312690