Enhanced dielectric performance of nano boron nitride impregnated cellulosic insulations

The application of nanodielectric materials in high voltage power transmission systems has received particular attention. This investigation shows a comparison of the AC dielectric behavior of insulating paper impregnated with conventional mineral oil and dielectric nanofluids. The AC breakdown voltages of various systems were measured according to ASTM D149 to determine the effect of using nanofluids as dielectric media. The observed results indicate that addition of insulating nanoparticles to conventional transformer oil exhibits substantially higher AC breakdown voltage than that of pure mineral oil impregnated paper.