Application of dielectric loss measurements for life consumption and future life estimation modeling of oil-impregnated paper insulation in HV power cables

This thesis gives a description of diagnosing life consumption and future life estimation of oil-impregnated paper insulated cable by using dielectric loss value. Dielectric loss values were investigated at different temperatures and different electrical field intensities in the laboratory. Based on laboratory measurements, a program was built; it can calculate the life consumption of paper oil-impregnated insulation by on-site dielectric loss measurements. Thermal aging was also taken into account for life consumption calculation in the program as an additional criterion. After that, future life estimation was calculated based on the result of life consumption and thermal aging theory in the program.Electrical Power EngineeringElectrical Engineering, Mathematics and Computer Scienc