Title :
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
fDate :
9/1/1994 12:00:00 AM
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;
Journal_Title :
Magnetics, IEEE Transactions on
