Effect of Titanium Oxide Nanoparticles on Breakdown Strength of Transformer Oil

Electrical insulation is important for electrical equipment, because the transfer of electric power is at different efforts, electrical insulators must meet the required requirements. Isolators are several images of solid, liquid and gaseous. Mineral oils are commonly used to isolate the transformer electrically. Transformer faults cause aging of oils, refining or replacement is the solution to treatment, both are very expensive. In this paper, the old oil is enhanced with nanoparticles (NPs) for reusing in the power transformer again. The NPs enhance the insulation, physical and chemical properties of transformer oil. The breakdown voltage (BDV) and the dissipation factor (DF) are tested for old oil and after addition the NPs according to IEC standard methods. The NPs are many types, Titanium oxide (Ti02) is one of them, which is used in this research. NPs reduce the effect of moisture as it absorb and form hydroxyl groups around. Also, reduce the effect of dissolved carbonate in oil without harmful effects. In this experiment, a study was conducted on the addition of NPs to oils, to ensure their effect on electrical insulation, also to be used again. The results show that adding small amount of TiO2 to transformer oil improves its breakdown strength as well as dissipation factor.