Investigation of load noise generation of large power transformer by means of coupled 3D FEM analysis

摘要

Purpose - This paper aims to present a 3D numerical analysis of the load noise generation associated with large, oil immersed three-phase power transformers.rnDesign/methodology/approach - After studying the mechanical behavior of the winding structures of transformers, the results of coupled magneto-mechanical simulations are presented. Findings - An appropriate modeling strategy of the vibratory winding structures of transformers is necessary to reduce complexity and computational resources.rnOriginality/value - The presented model setup describes a fully transient, 3D coupled magneto-mechanical simulation of the vibratory winding structure of large power transformers.