| Hydroelectric power is attached importance for its hump modulation and huge potential resource. Along with the development of power system, increasing the competitive power of hydroelectric plant becomes the hydropower trade's aim. Enhancement of the operation stability of hydroelectric unit, development of the fault diagnose technology, and actualization of condition monitoring are the requirement of the reform of power system.The thesis studies on the condition monitoring and fault diagnose, and finds a method to monitor the hydroelectric unit. Based on this method, it develops a condition monitoring and fault diagnose system for hydroelectric unit.The system on-line monitors the No.3 unit of Guizhou Dongfeng Hydropower Plant and analyzes the operation stability and energy characteristics of the unit. It explores the way of actualization of condition monitoring and fault diagnose from the view of engineering. The system uses signal processing, monitoring technology and network, so it can monitor the unit on-line and real-time to help operation and servicing worker.The thesis sets up a diagnose knowledge base, which considers the normal fault of hydroelectric unit and the characteristics of the No.3 unit of Guizhou Dongfeng Hydropower Plant. With this condition, the system can diagnose the elementary fault of the unit to assist in operation and servicing. |
