Study of electrical and chemical properties of transformer insulating oils

Ahmad Hariz , Tarif (2014) Study of electrical and chemical properties of transformer insulating oils. Project Report. UTeM. (Submitted)

Text STUDY OF ELECTRICAL AND CHEMICAL PROPERTIES OF TRANSFORMER INSULATING OILS 24pages.pdf Download (534kB)

Abstract

Transformer is a device in static condition. The transformer transforms electrical energy from one circuit to another and important in the power system for voltage level conversion. Transformer failure might cause by several conditions such as an overload condition and most failure were caused by an insulation problem. This research is carried out to examine the characteristic, particular substance oil and the relationship between these characteristic of transformer oil that can cause failure. This research is to study transformer insulating oil in electrical, physical and chemical properties using Meggar Oil Test Set, Fourier Transform Infrared Spectrometer (FTIR) and Viscotester. The samples only used one type of transformer insulating oils (Hyrax) but in four type conditions which are new transformer insulating oils, breakdown transformer insulating oils, different moisture content and temperature level. Moisture can cause breakdown voltage or dielectric strength value decrease, damage the winding, insulation kraf paper and proven by chemical substance analysis, the moisture break the particle chain, even moisture good in heat transfer and has a low viscosity. Temperature also can affect the viscosity and breakdown voltage value, as the temperature is increase, viscosity value is decrease and breakdown voltage is increase. Moisture and temperature categories as most influence effect to the transformer insulation problems. The result of the chemical substances, breakdown voltage and viscosity analysis shows the moisture and temperature give an impact in insulating oil particle and substances.

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