Condition Assessment of Power Transformer Using Information Fusion
Jing Gong · Gao dianya jishu · 2010
In order to improve the accuracy of transformer condition assessment,and to promote the maintenance model to transform to the condition based maintenance,a 220 kV oil-immersed power transformer was studied.Based on the field investigation,the membership between index value and transformer operating status and the impact of different initial index value was analyzed.The unascertained mathematics was used to process the assessment indicators’ quantification results given by experts.The state function of insulating oil test based on the half Cauchy distribution function and the state function of electrical test considering the initial value differences were constructed.Case analysis verifies that the state function of each evaluate index and the index weight calculation method based on unascertained rational number can easily evaluate the status and provide a reasonable proposal in condition based maintenance of power transformer.