Study of thermal stress effect on ester oil using breakdown and fourier transform infrared spectroscopy (FTIR) test

Mohd Yahya, Muhamad Izwan (2016) Study of thermal stress effect on ester oil using breakdown and fourier transform infrared spectroscopy (FTIR) test. Project Report. Universiti Teknikal Malaysia Melaka, Melaka, Malaysia. (Submitted)

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Abstract

The power transformer is one of the most important equipment, ensuring the safety of the operation for power grids and it plays a vital role across the electrical grid network. The insulation materials which are the insulation oils are decide as the operational life of the transformer. The insulation oils have been chosen as the insulating medium of a high voltage transformer, but it has effect due to thermal and electrical aging.Once the transformer is set up into operation, the insulation oils will be starting to ages over time and this will cause the dielectric properties of the insulation oils will tend to decrease. Thus,the aim of this project is want to measure a breakdown voltage (BdV) and using Fourier Transform Infrared (FTIR) to examine the condition of the oil when under thermal stress. The influence of the copper and cellulose in the oil are being observed which affect the breakdown strength of oil sample. The standard of ASTM D1816 and ASTM D2144 are use as guideline in the testing procedure and confirm the result. The result show the effect of the thermal stress with influence of copper and cellulose in the oil affect the breakdown voltage value which show 26.71% in ester oil without copper and cellulose compared to ester oil with copper and cellulose is 11.11% and show changing in absorbance spectrum of FTIR.

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