MODIFICATION OF THE DISTRIBUTION TRANSFORMER TO REDUCE THE POWER LOSSES

Abstract

This study presents the modification for electromagnetic model of the three phase distribution transformer'' D.T'' 400 KVA 11/.416KV,which have properties immersed oil and core type. It was fabricated at Ministry of industry in Baghdad/Iraq."ANSYS11 " was used to analyze this "D.T". The electromagnetic model analysis is used to explain the distribution of magnetic flux density and to calculate the losses of the transformer in case of no load which was 0.2KW and the losses at load was (4.3KW) . The suggested model was compared with practical results which gave a good effect for model results. The modification of this work was done by changing the core material to amorphous steel "Am. St." from silicon steel "Si.St." .The no load losses is (0.08 KW) and the load losses is (4.01KW).