Influence Of Aluminium And Copper On Thermal Ageing Of Synthetic Ester Oil (MIDEL 7131)

Abdul Razak, Muhammad Ridhwan (2016) Influence Of Aluminium And Copper On Thermal Ageing Of Synthetic Ester Oil (MIDEL 7131). Project Report. UTeM, Melaka,Malaysia. (Submitted)

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Abstract

Insulating oil in power transformer is subjected to the degradation because of the ageing,high temperature and chemical reactions such as oxidation.Thermal ageing of transformer oil is due to the degradation of insulating paper which contributes the moisture content in the oil thus lowering the dielectric strength of the insulating oil.While,copper is widely used in transformer winding due to its better conductivity compared to aluminium,comparisons between both conductors in thermal ageing is still fairly unclear.Hence,the aim of this project is to investigate the level of breakdown voltage and compare the level of moisture content between transformer oil that is thermally aged with copper and aluminium.In this project,the influence of aluminium and copper in transformer oil is investigated under accelerated thermal stress.The methods in this project are based on past researches on how to aged transformer oil.The approach is by conducting thermal ageing under different temperature.The data obtained is analysed and compared which consists of the average breakdown voltage and moisture content of each sample.The results reduction in breakdown voltage and moisture content are proportional to the temperature.It appears that samples with aluminium powder has a slightly lower breakdown voltage and a higher moisture content rather than the samples with copper powder.For future work,it is better to acquire an alloyed alumnium 6101 which is better than pure aluminium.

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