Effect Of Moisture Level To AC Breakdown Voltage Of PFAE Based Nanofluids

Muhammad Hilmi, Saad (2015) Effect Of Moisture Level To AC Breakdown Voltage Of PFAE Based Nanofluids. Project Report. UTeM, Melaka, Malaysia. (Submitted)

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Abstract

Power transformer in high voltage application is important part of electricity generation and transmission network. Hence, it needs a proper insulation and cooling system during operation. During transformer operation, insulation oil performance in term of breakdown voltage is affected by moisture that exists in the oil. Due to this moisture, the electrical characteristics of the insulating oil must be improved to avoid failure of power transformer due to low breakdown voltage. So, this study will be conducted to investigate the influence of nanoparticle dispersed in natural oil with water to breakdown voltage value. The objective this study are to prepare nanofluids by mixing conductive nanoparticles and water into natural oil, to setup a breakdown voltage test apparatus purposely used for liquid insulation test, and to determine and analyses the breakdown voltage level of nanofluids in concerned. In this study, electrical properties testing were carried out in term of breakdown voltage test. The test were conducted under moisture stress until of 0.20 ml, at intervals of 0.05 ml. The nanofluids insulating oil and Palm Fatty Acid Ester (PFAE) oil was through vacuum drying oven process for 72 hours before the breakdown voltage testing. Another addition is to study the breakdown voltage of nanofluids insulating oil under moisture stress. Result from the breakdown voltage test, the performances of nanofluids were carried out of the increasing the breakdown voltage and under moisture stress of nanofluid insulating oil based. Hence, the nanofluids can improve the breakdown voltage and good performances under moisture stress.

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