Prediction of local temperature rise in power transformer tank by FEM (CROSBI ID 647744)
Prilog sa skupa u zborniku | izvorni znanstveni rad | međunarodna recenzija
Podaci o odgovornosti
Sitar, Robert ; Šulc, Ivan ; Janić, Žarko
engleski
Prediction of local temperature rise in power transformer tank by FEM
Paper presents research on experimental model for tank local overheating. By using an experimental model, phenomena of tank local overheating is investigated without need of expensive experiments on real transformer unit. This first step of research is made with reliable measurements of losses and temperatures in tank on a simple experimental setup. Using commercial numerical tools based on finite element method (FEM) for coupled electromagnetic-thermal calculation, temperatures on experimental model are calculated. Both electromagnetic and thermal model have nonlinear parameters that can have high influence on value of stray losses and cooling conditions. Calculated temperatures are compared to measurement results. In the last part of the paper, measurements of tank temperatures with infrared camera on real three-phase power transformer are presented. 3D nonlinear numerical model of power transformer is created in FEM. Numerical model includes core, windings, LV leads and metal parts. Obtained temperatures are compared to calculation results by FEM and give good agreement.
power transformer ; coupled calculation ; local overheating
nije evidentirano
nije evidentirano
nije evidentirano
nije evidentirano
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Podaci o prilogu
NM_4-NM_4.
2017.
objavljeno
Podaci o matičnoj publikaciji
4th International Colloquium "Transformer Research and Asset Management", Pula, Croatia, May 10 – 12, 2017
Pula: Hrvatski komitet međunarodne konferencije za velike električne sisteme (CIGRE)
Podaci o skupu
4th International Colloquium "Transformer Research and Asset Management", Pula, Croatia, May 10 – 12, 2017
predavanje
10.05.2017-12.05.2017
Pula, Hrvatska