Fault Diagnosis Evaluation Method and Index System in Digitalized Distribution Substation Areas

Abstract

Digitalized distribution substation areas constructed with intelligent transformer terminals can realize various advanced application scenarios using IoT technology, which provides a new perspective for fault diagnosis problem solving in power distribution systems. This paper briefly introduces the principle of fault diagnosis based on a digitalized substation area. Then, we propose a fault diagnosis effectiveness evaluation index system containing first priority qualification indices, second priority performance indices, and an index weight calculation method based on the hierarchical analysis method and improved entropy weight method. Through a fuzzy comprehensive evaluation method, a comprehensive evaluation of the fault diagnosis effectiveness is carried out. At the end of this article, the effectiveness of the proposed evaluation method and index system is verified through example analysis.