Partial Discharge Pattern Analysis of Pure Minerial Oil and Nano Material Filled Minieral Oil under Superimposed Harmonics Ac Voltage

Abstract

Transformer plays important role and expensive device in power system. It Is used to step down or step up in required level, for the continuously smooth and reliable operation, transformer must be protected from anomalies condition. Transformer insulation is used for the protection of transformer and mineral oil is  widely used as a insulating oil but mineral oil has disadvantages like poor biodegradability and low fire point , in this paper we are adding the nano filler material to increase the quality of mineral oil insulating properties  and study the partial discharge pattern under the super imposed harmonics ac voltages. Harmonics are produced due to wised of power electronics device by the consumer which cannot be controlled in present condition.