Hybrid Subjective and Objective Evaluation Method of the Equipment for First Class Distribution Network

Abstract

This paper presents a hybrid subjective and objective evaluation method of the equipment for first-class distribution network. Firstly, it analysis the difficulties of the equipment selection in the current first-class distribution network. Secondly, it deeply analysis the influencing factors of equipment selection in the first-class distribution network. The comprehensive evaluation indices system of first-class power distribution network equipment is constructed from five aspects including economy, performance, intelligence, coordination, and standardization of equipment, in order to the features of the equipment for power distribution network, such as diversity of equipment functions, diverse evaluation indicators, various types, and varied access methods. The subjective weighted methods are highly subjective and difficult to fully express the effectiveness of weights for evaluating indicators. The objective weighted methods are easy to lose key information due to limited sample of measurement data. A hybrid subjective and objective weighting method is proposed to combined with principal component analysis and analytic hierarchy process, and the relative entropy principle is used to weight distribution of subjective and objective evaluation results. Finally, the feasibility of the proposed method is verified through the first-class distribution network equipment in a province in southern China. This paper provides reference for comprehensive evaluation of first-class distribution network equipment.