WSEAS Transactions on Fluid Mechanics
Print ISSN: 1790-5087, E-ISSN: 2224-347X
Volume 11, 2016
Thermal Simulation of the Effect of Windings Arrangement in a Cooled Power Transformer
Authors: , , , ,
Abstract: The outcome of the study will be the determination of the effects of modifying geometrical parameters of a real 33.6 MVA power transformer by means of a simplified model based on CFD methods. This will help the designers to prove that power transformers winding physical arrangements determine the location and value of critical temperatures such as the hot spot. Basically, the results show that a the proposed variations in the outer radius of the high voltage winding and the high and low voltage vertical cooling duct widths do affect the critical temperatures location and value due to oil hydrodynamics. Results show that there is a reduction of 3.21% and 1.34% in the value of critical temperatures for the HV and LV cooling duct variation respectively and the location of hot spot is more specifically defined at the 42th LV disc. Outer HV radius variation results show also an increase of 1.6% in critical temperature and the location of hot spot still remains in the 42th LV disc.
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Pages: 36-48
WSEAS Transactions on Fluid Mechanics, ISSN / E-ISSN: 1790-5087 / 2224-347X, Volume 11, 2016, Art. #5