Study Of Condition Based Maintenance Strategy Implementation In Hydropower Plant

The maintenance of hydropower facility is a comprehensive systematic engineering. It's also one of the most cost intensive activities for hydropower enterprises. The high requirement on both technology and management is a real challenge to the engineers and managers. The applications of advanced technologies and management approaches in this field will bring us rich returns.The"condition based maintenance"system firstly acquires the operation information and evaluates the performance of equipment. Then it detects and diagnoses the performance degradation and fault(s). It estimates that the health condition of equipment and reports the condition to the maintenance engineers. The integration of the this system with the SCADA and management information system allows the managers to make optimal maintenance decision according to all the health condition of equipment, the water resources and the electric market.China Yangtze Power Cooperation Ltd (CYPC) is the largest hydroelectric enterprise in China, with the advanced installations, technologies and managements in the world. The maintenance activities are comprehensively investigated and summarized based on this enterprise. The maintenance principle of hydro power plants should be that the scheduled maintenance will be reduced, the corrective maintenance must be avoided, the condition based maintenance is gradually realized and all the maintenance approaches will concurrently exist and should be optimized. The general objective of the"condition based maintenance"system is determined according to this principle. The requirements on the system are proposed. The engineering methodology of the"condition based maintenance"system is presented.Under the frame of Control-Maintenance-Management integration, the technical methodologies of the"condition based maintenance"system construction are discussed. The system configuration is demonstrated. The scheme of the condition monitoring, the knowledge bases as well as the analysis and diagnosis expert system are described in detail.The system function and architecture is generally figured out one time. And the system is built step by step. The management approaches of the projects are presented.