Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/15630
Title: A novel approach to investigate the hot-spot temperature rise in power transformers
Authors: Li, L
Niu, S 
Ho, SL 
Fu, WN 
Li, Y
Keywords: Computational fluid dynamics (CFD)
Convection heat transfer coefficient
Hot-spot temperature rise
Magneticthermal coupling
Issue Date: 2015
Publisher: Institute of Electrical and Electronics Engineers
Source: IEEE transactions on magnetics, 2015, v. 51, no. 3, 7093471 How to cite?
Journal: IEEE transactions on magnetics 
Abstract: For large power transformers, the hot-spot temperature rise in their structural parts is an essential issue to address. Computation of the hot-spot temperature rise is, however, a complicated engineering problem because of the uneven loss distribution and effect of internal oil flow upon the convective heat transfer coefficients on the body surfaces of transformers. This paper presents a novel approach to compute and analyze the hot-spot temperature rise of the structural parts for an ODFS-334 MVA/500 kV single-phase auto-transformer. The surface convection heat transfer coefficients, which are computed based on computational fluid dynamics, are used as the boundary conditions of the magnetic-thermal coupling analysis using finite-element method. To validate the feasibility and applicability of the proposed method, the numerical results obtained from the proposed method are compared with those of experimental ones.
URI: http://hdl.handle.net/10397/15630
ISSN: 0018-9464
EISSN: 1941-0069
DOI: 10.1109/TMAG.2014.2359956
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