Operation state monitoring of dry-type transformer based on fuzzy analytic hierarchy process

In this paper, a set of index system for monitoring the operation state of dry-type transformers is proposed according to the specific conditions and relevant regulations on the site. The evaluation set is established, the fuzzy evaluation matrix of the index layer is constructed, the index weight is calculated according to the expert scoring, and the comprehensive fuzzy evaluation matrix of each factor layer is calculated according to the hierarchical principle. Finally, the mathematical model of the evaluation results of the operation state of dry-type transformers is obtained, and the calculation results are processed by the fuzzy distribution method, and the method suitable for the operation state monitoring of dry-type transformers is formed. According to the experimental analysis, the evaluation results of this method are very objective, which can provide important reference for maintenance personnel to develop maintenance plans.