Research And Implement Of Condition-Based Maintenance For Relay Protection

Maintenance for Electrical Equipment, the most important part of production management in power corporations, has great significance for improving their health and ensuring safety operation for power system. Relay protection is the first defense against fault in power system and plays a determining role for its security. Therefore it is necessary to optimize its maintenance mode of relay protection and adopt more scientific maintenance scheme in the view of development of power grids and society demands. And with the continuous development of CBM for relay protection, implementation of standardized management for relay protection is an inevitable trend in power system. So it is important to standardize all defects of relay protection.The paper carries on the research of theoretical achievement of CBM and the relay protection information management system. In addition, it discovers several potential problems of this research in the course of transition from preventive maintenance to CBM. Then the thesis analyzes the raw data of relay protection and applies the quantifiable indicators of condition assessment for relay protection sets and the secondary circuit. After where these condition indicators are deprives from and how to deal with the raw data are discussed, the article brings forward brief and practical models for the condition evaluation of relay protection sets and the secondary circuit. Then multi-model of condition assessment is put forward to break the limitations of traditional intelligent models. Consequently, the rational condition assessment result and corresponding proposals can be presented for workers. At last, stratified method, ever used in PMS system, is adopted to regulate all defects of relay protection, forming its standardized library and supplying the quantitative basis for condition assessment, definition of family defects, equipment selection.On the base of above researches and considering an actual engineering project, the paper narrates the design idea, function frame of relay protection information management system. The practical operation indicates that this system could greatly reduce maintenance frequency and time as well as labor intensity. And potential accidents of safety production can be eliminated in time, while usable rate of equipment get rising and serving work done well.