Analysis of Impedance Matrix in Transformer Windings through the Finite Element Method (FEM)

DAVID L. ALVAREZ; JAVIER A. ROSERO; MOMBELLO, ENRIQUE E.

Medellin

Congreso; 2014 IEEE PES Transmission & Distribution Conference and Exposition (T&D-LA 2014); 2014

IEEE Colombia

This paper analyzes the impedance matrix of anequivalent circuit used to model frequency response in differentsections of transformer windings. The studies of the matrix aremade changing the properties of the core and calculating theeigenvalues and determinants for each one. Finally the influenceof axial displacements in the frequency response are analyzedwith the support of the Finite Element Method FEM. Thiswork describes the circuit used to model windings for analystfrequency response, to model the influence of core is used FEMfor describing the behavior of impedance in function of thefrequency.