Improving the Thermal and Electrical Properties of Transformer Oil Using ‎Hybrid Nanofluid

Improving the insulating and thermal properties of transformer oil is one of the factors in the use of nanoparticles (NPs) in oil. However, the use of NPs may only have a positive effect on some properties of the oil or even have a negative effect on the other properties of the oil. For this reason, hybrids nanofluid(HNF) were used to improve the properties of the transformer oil. By performing the Breakdown Voltage (BDV) test on different weight percentages (wt%) of TiO۲ and CNT, it was proved that the best wt% for TiO۲ is ۰.۰۰۷۵ and for CNT is ۰.۰۰۱ to maximize the BDV. In this case, the HNF was able to improve the BDV and heat transfer by ۹% and ۸%, respectively. Another surprise that the HNF has been able to reduce the amount of C۲H۴ and C۲H۶ dissolved in oil by more than ۷۰%. This reduction in the number of gases has another very desirable result and has reduced the PD by ۶۳%. HNF proved that by using the right combination of different nanomaterials in transformer oil, more properties of the transformer oil can be improved.

Keywords:

روغن ترانسفورماتور , نانو سیالات هیبرید , ولتاژ شکست , تخلیه جزئی , آنالیز گازهای محلول , نانوذرات