International Congress on Engineering, Sciences and Innovative Technologies (ICESIT 2020) - Kuala Lumpur - Malaysia (2020-02-13)

Dielectric and Breakdown Analysis on Heating Disposed Petroleum Based Hydrocarbon Mineral Oil for Transformer

Petroleum-based hydrocarbon mineral oil is subjected to several negative influences, which cause degrading performance to the point when oil is not applicable to function appropriately and need replacement of new oil. Hence, disposal is one of the approaches to eliminate waste oil that will affect human and environment. This paper presents a study to investigate the performance of 10 years old transformer oil that has been used and disposed by industry after when through six stages of treatments. Two main aspects were considered; dielectric and electrical properties. The parameters of dielectric properties are including dissipation factor (DF), relative permittivity and resistivity, while electrical properties involving 100 measurements of AC breakdown voltages based on IEC 60247 and IEC 60156 standards. Observed that, disposed oil sample produced the highest DF value from 25oC until 100oC temperature compare to other oil samples. This is due to aging factors and high impurities contents. After some purification process, the DF, permittivity and resistivity of disposed oil improved significantly. Based on the breakdown voltages tests conducted, there is huge improvement (344.52%) observed on the deteriorate mineral oil after filtration, drying, degassing and four hours cooling process. This result parallel with the properties of dielectric performance produced in this experiment. Hence, this study shows that there is a great possibility to reuse mineral oil, restore its insulation properties and reduce the amount of harmful waste and emission in this world.
Mrs. NUR SABRINA SUHAIMI, Mr. ABDUL RASHID ABDUL RAHMAN, Dr. MUHAMAD FAIZ MD DIN