Analysis of critical parameters of vegetable oil as an alternate dielectric fluid to mineral oil

Transformers are essential components of electric Power Generation, Transmission and Distribution. The Majority of Power Transformers depends on liquid dielectrics as an insulating medium and heat transfer. Transformer oil can be replaced by alternate oils like Coconut oil, Pongamia Pinnata oil, Palm oil due to their biodegradability and environment friendly nature. This Paper deals with the individual effect of Natural Esters. Investigations of various parameters like BDV, Viscosity, Flash and Fire Point are done according to their Standards. From the Experimental analysis, the properties of Palm oil are high compared to others. The average breakdown strength of palm oil is higher than mineral oil. Comparing the experimental result, cost and availability, the palm oil may be the best alternate fluid for Transformer.