Analysis of Typical Modes of Relay Protection Defects Based on K-Means Algorithm

The accurate diagnosis and disposal of relay protection defects play an important role in ensuring the function of relay protection and the safe operation of power systems. As the numerous relay protection devices and circuits and the wide variety of defects, it brings challenges to the accurate diagnosis and disposal of defects. In this paper, based on historical defects, the overall analysis of defects is carried out from the perspective of location, cause and severity of defect. The key quantitative indicators of relay protection defect's characteristics are proposed. Based on K-means algorithm, historical defect's character data is clustered and analyzed. The defects are divided into different categories, and the typical defect mode of relay protection is obtained, which can lay a good foundation for the intelligent diagnosis and overhaul recommendation of defects.