Transformer Health State Assessment with Uncertain State Values
The traditional transformer state assessment method health index model is not perfect,this paper puts forward a new assessment method combining subjective and objective.A comprehensive transformer health state model is con-structed by integrating the health conditions of dissolved gas,moisture content,acidity,breakdown voltage,dissipation fac-tor,furan series compounds and other attributes of the transformer.Fuzzy sets are adopted to obtain objective weights based on the minimization of distance between ideal value and expected value and the minimization of variance.The sub-jective weight of each attribute is obtained by calculating the proportion of expert weight.Finally,the comprehensive weight of each attribute is obtained by combining subjective and objective models.The health scores of different transformers are calculated by various values of transformers to judge the health status of transformers.
fuzzy setexpectvarianceexpert evaluationcombination of subjective and objectivehealth value
万方数据
维普
