Paper Details

In this paper, power transformer has to keep the temperature within limits according to international agreementstandards. Two of the limits are a maximum temperature rise and a maximum oil temperature. The main purpose of this studywas to learn about the temperature distributions and oil velocity inside the coil of the power transformer and to model anddevelop a program using MATLAB that can modulate the suitable parameter that not exceeds maximum temperature rise indisk coil transformer. Two methods have been used to study the velocity and temperature parameters affecting the oil flowthrough the transformer. The first approach focused on equation derived from previous worked about oil flow andtemperature distribution. The second approach was to handle the problem as a global optimization problem solved bynumerical methods. The optimization was done using predictions from a program used for velocity and temperaturecalculation. The numerical method result was successful; on all the designs tested. It gave a lower temperature rise valueaccording to international agreement standards. The study has shown that a geometrical detail approach provided for betterdesign solutions in reasonable time and therefore it has shown its potential for practical use. Both the methods could becombined and used for further investigation.

Ms.R.SRILEKHA, Mrs.R.RAJESWARI, “DISC TYPE TRANSFORMER WINDINGS IN AN OD COOLING MODE WITH DIRECTED OIL FLOW”, International Journal of Advance Engineering and Research Development (IJAERD), Vol. 3, Issue 11, pp. 8-14, November 2016.