Effect of ZnO and BaTiO3 Nanoparticle on Partial Discharge Characteristics of Palm Oil Based Nanofluids

This paper presents the partial discharge inception voltage (PDIV) and partial discharge extinction voltage (PDEV) of palm oil based on nanofluids with different concentration of ZnO and BaTiO3. Each liquid specimen was prepared in a 2000 ml beaker. The palm oil sample was heated under vacuum in the oven with temperature at 80 degrees C under 200 mbar for 12 hours. Next, these liquids were divided into seven groups according to the amount of ZnO and BaTiO3 nanoparticle. The first group was the unmodified palm oil. The second and third group were palm oil mixed with 0.01% of ZnO and BaTiO3 nanoparticle respectively. The fourth - the seventh group were palm oil mixed with 0.03% and 0.05% ZnO and BaTiO3 respectively. Then all specimens were heated at 80 degrees C under 200 mbar for 12 hours. After that, the PDIV and PDEV of the liquid specimen were investigated using the test circuit according to IEC 60270 using needle-plane electrodes with the needle tip radius of 10 mu m. Each group was tested in 6 times. The mean values of PDIV and PDEV were reported. From the test results, it was clear that the types and concentrations of nanoparticle obviously affected the PDIV and PDEV characteristics of the palm oil based nanofluids.