Typical Analysis of Different Natural Esters and their Performance: A Review

An electric power supply-demand is increasing in our day-to-day life, where power transformers are significant devices in the power system. Most industries prefer oil-filled transformers instead of dry-type transformers. Transformer oil (Mineral oil) is universally used insulating material in the high voltage power transformer. According to a British Research Council report, overexploitation of petroleum products, the mineral oil will run out in near future. Because of its non-biodegradable property it does not an eco-friendly product also it does not meet current environmental acts. To the concern of limitation of resources and ecological system, nowadays researchers focus on substitute for conventional mineral oil mainly. So the researchers analyze the practicability, feasibility, sustainability and performance of Natural esters (vegetable oils), specifically in high voltage power transformers. Because, Natural esters possess outstanding biodegrading property, non-poisonous ness, greater fire safety guarantees and dielectric strength compared to the conventional transformer oil or mineral oil. Investigation of this paper embraces the electrical, physical, chemical properties and their blend properties of natural esters.