Preparation and Testing of Biodegradable Nanofluids

Inseparable part of the high voltage transformers is electro insulating liquid. As known, for one hundred years are used mainly mineral oil based insulating fluids since having good electrical and physical properties and being relatively cheap. Over the years other liquids has been considered/used as replacement to mineral oils such as polyfluorobiphenyls (PFB), poly-chlorobiphenyls (PCB), silicones, synthetic esters, gas to liquid (GTL), etc. This paper and research is dealing with testing of modern biodegradable and sustainable oil Envitrafol and its improvements by nanoparticles. As known natural ester-based electro insulating fluids are polar substances with relatively high viscosity and corresponding properties. This paper is focusing on the study of the impact of the modification of natural ester-based fluid by nanoparticles on breakdown voltage (BDV).