Experimental Investigation Of Thermal Aging Against Breakdown Voltage Of Palm-Based Nanofluid

Syed Hazim Fawwaz, Wan Razali (2023) Experimental Investigation Of Thermal Aging Against Breakdown Voltage Of Palm-Based Nanofluid. [Final Year Project Report] (Unpublished)

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Abstract

The use of mineral oil as an insulating oil in transformers is well-known, and it thus dominates the global market as a commercial transformer oil. Furthermore, because to its wide availability and low cost, mineral oil is the single and significant alternative for enterprises to consider. Transformer insulating oil is crucial in ensuring that the function of the transformer is working well and that it is kept in optimum condition so that it does not influence the entire electrical power system and causes other components to malfunction. However, this idea providing a new alternative technique to replace mineral oil with greener and eco-friendly insulating oil. This is due to the growing demand for greener technology in all areas. In this project, a biodegradable oil (palm oil) sample will be used to produce a reaction between biodegradable oil, alcohol (methanol), and potassium hydroxide (KOH) as a catalyst. This is known as the transesterification process. Next, in a means to enhance its dielectric properties, nano powder (nanosilica) is added to the sample and this addition is known as nanofluids. There are still few studies using this form of insulating oil, as most are focused on nano-based mineral oil and raw biodegradable oil. As a result, this project is mainly focused on nano-based palm ester oil, which may provide a superior outcome in terms of dielectric characteristics. Aside from that, past study indicates that it has great breakdown voltage (BDV) strength and may entirely decay in a short period, which would be a benefit when compared to commercial mineral oil. Throughout the procedure, the produced sample will be subjected to a series of standard tests to assess its performance. Characterization tests utilising a Scanning Electron Microscope (SEM) and Fourier Transform Infrared (FTIR) were performed at the UNIMAS Chemical Lab, while the remaining testing was performed at a licenced lab in Kuching, Sarawak. The oil samples were evaluated in terms of particle characterisation, breakdown voltage (BDV), which were then compared to commercial insulating oil and palm-based ester insulating oil. The result reveals that palm oil methyl ester with 0.05g/L CNT nanofluid has the best breakdown voltage after 50 hours. All breakdown voltage of the sample has been carried out.

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