Numerical simulation on the tank strength of an ±800 kV converter transformer

This paper systematically investigates the influence of trough-type stiffener dimensions (height, thickness, width) and center distance on the structural strength of an ±800kV converter transformer tank. The results indicate that increasing the height and thickness of the trough-type stiffeners significantly reduces the maximum deformation of both the tank wall and stiffeners. Appropriately adjusting the center distance not only effectively improves the maximum deformation of the tank wall but also maintains the overall weight of the transformer. When the trough-type stiffener height is no less than 230 mm, thickness no less than 12 mm, width no less than 400 mm, and center distance no greater than 1250 mm, the maximum deformation of the tank wall and stiffeners remains below twice the wall thickness, satisfying mechanical strength requirements. The findings provide valuable references for researchers and engineers engaged in the structural design of transformers.