Abstract
Maintenance is fundamental for the safe and stable operation of hydro power plants. And it's also the most cost intensive activity. Optimal maintenance is a reliability centered maintenance strategy with considering all facility condition, hydraulic resources and electricity market. HOMIS (optimal maintenance information system for hydro power plants) is an information platform to implement this strategy. HOMIS is vertically organized to equipment level (condition monitoring and analysis), group level (long term memory and diagnosis), plant level (technique decisions on maintenance), enterprise level (management decisions on maintenance), and remote level (remote monitoring, analysis and consultation). HOMIS horizontally integrates with the control system (such as SCADA, the speed governor and the voltage regulator) and the management information system (MIS). This system has been successfully put into service in Gezhouba hydro power plant in China.
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