Make Use Of Water and Furfural to Carry Out Transformer Aging Estimation

Power transformer is one of the most important electrical equipments in the electric system and is also one of the electrical equipments resulting in most electric system accidents. Because many big transformers in china have been running over twenty years, the problems of aging are increasing serious. Furfural content in the oil is an indication of solid dielectric deterioration, and it is important for identifying the aging of insulation. Aging is also strongly dependent on water .This paper presents that the aging model can be built by a fuzzy logic via furfural and water content in the oil. Examples show that this method can get more exact about aging estimation.