Research on Radial Stability of Power Transformer Windings

Abstract

In this paper, the influencing factors of the radial strength of transformer windings are studied based on the inner winding of the single windings, and the elastic-plastic material properties are introduced to simulate the change process of the stiffness, defects and quantity of the transformer struts on the radial strength of the windings. Taking the experimental transformer as the research object, a two-dimensional finite element calculation model is established to analyze the variation law of the axial leakage magnetic field and radial electrodynamic force of the inner winding of the transformer. The radial force deformation process of the inner windings of the three-dimensional transformer is further studied, and the stability of the transformer winding under various working conditions is compared. The research on the winding stability of the transformer strut performance in this paper lays the foundation for the follow-up research on the cumulative deformation of the transformer winding.