Abstract
In order to maintain continuous power supply in the electrical system, condition monitoring of the sensitivity equipments in power system is very essential. Among those equipment in which more concentration required is Power transformer. To determine the performance of transformer, it is necessary to have investigations on ageing of transformer oil due to thermal degradation. In this work an effort has been made to analyze various critical parameters like acidity, Breakdown Voltage (BDV), viscosity, volume resistivity, loss tangent, dielectric constant and spectral response for different range of thermal degradation of transformer oil with various compositions of materials like pressboard and Kraft paper. As initiative an exclusive Thermal-UltraViolet (UV) analysis has been carried out to investigate the spectral response of transformer oil. By estimating the condition of oil, the unexpected failure of transformer and power outages can be prevented.
Highlights
Major problem faced by the power engineers through out the world is predetermining the life time of transformers
Power transformer life ends before the predicted time because of lack of insulation monitoring
Monitoring of liquid dielectrics is achieved by examining various critical parameters like acidity, Breakdown Voltage (BDV), viscosity, volume resistivity, loss tangent and Dielectric constant
Summary
Major problem faced by the power engineers through out the world is predetermining the life time of transformers. Power transformer life ends before the predicted time because of lack of insulation monitoring. Solid and Liquid insulation system used in transformer are designed to withstand stresses like Power frequency voltage and transient stresses like lightning impulses, switching impulses and short circuits. The deterioration of solid insulation system may be examined by various methodologies like analysis of furan content and Degree of Polymerization. Monitoring of liquid dielectrics is achieved by examining various critical parameters like acidity, BDV, viscosity, volume resistivity, loss tangent and Dielectric constant. Kohtoh et al presented a characteristics analysis of
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