Power transformers

Power transformers are the most significant pieces of equipment for electrical power delivery systems. One of the key parameters to be monitored in a power transformer is the internal temperature. High temperature accelerates the aging of winding paper insulation and increases the risk of bubbling under severe load conditions. Temperature is also an important parameter for transformer cooling system. The transformer winding hottest-spot temperature is one of a number of limiting factors for the loading capability of transformers. One way to increase the loading capability is to increase the efficiency of the cooling system by using fans and pumps. This research focuses on the investigation of the effect of the cooling system parameters, in particular the oil flow rate, on the thermal performance of power transformers.