Analysis of winding stability of short-circuit test model for extra-high voltage power transformer

摘要

This paper processes simulate analysis of short-circuit test model of transformer, using finite element analysis software ANSYS. The winding and disk deformation is calculated in different elastic modulus value of strip; The model is calculated and analyzed in the load of short-circuit test, the maximum deformation 2.62 mm of disk obtained is mainly consistent with actual measured value 2.9 mm; Analysis for impact of multiple short-circuit can be done for single span. After nine impacts the modal turn into the cumulative deformation stage. This analysis method in paper can be used for Extra-high voltage large power transformer winding short-circuit strength and radial stability analysis.