Influence Of Moisture Content To AC Breakdown Voltage Of Mineral Oil Based Nanofluids

Muhamad Yahya, Raziff (2015) Influence Of Moisture Content To AC Breakdown Voltage Of Mineral Oil Based Nanofluids. Project Report. UTeM, Melaka, Malaysia. (Submitted)

Text (24 Pages) Influence Of Moisture Content To AC Breakdown Voltage Of Mineral Oil Based Nanofluids 24 Pages.pdf Download (435kB)

Abstract

The power transformer is a very important and costly part of the electrical generation, transmission and distribution system network. Electric transformers depend on the high dielectric strength and cooling properties of insulating oil to maintain normal operation. Statistically, most of the transformer damages occur due to the dielectric insulation problems. The dielectric insulation problems affected by several factors, such as moisture, suspended particles, acidity, and pressure. The electrical strength of dry oil can be decreased due to the presence of water in the transformer oil. Hence, it is important to improve the insulating characteristics of transformer oil. Recently, transformer oil based nanofluids have been developed by dispersing nanoparticles in the oil. It has been shown that some of these nanofluids have much greater dielectric breakdown strength or thermal conductivities than the host transformer oil. Nanoparticles have affected changes in electrical properties when dispersed in insulating oil. Thus, this project aims to prepare nanofluids using mineral oil by dispersing it with Fe3O4 conducting nanoparticles. Then, a setup of High Voltage (HV) apparatus for breakdown voltage test according to IEC 156 standard will be prepared. Next, the nanofluids will be tested to determine their AC characteristic which is breakdown voltage under moisture effect. Mineral oil as a base oil is compared with the percentage of water presence in the Fe3O4 nanofluid. This project expected to give benefit to electrical generation, transmission and distribution system network by improving the breakdown voltage of transformer oil based nanofluids. This is because nanoparticles dispersed in insulating oil are promising to enhanced the AC breakdown voltage.

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