August 2003

Special Report: Fluid Flow and Rotating Equipment

Implement a steam turbogenerator fault detection and diagnosis system

Identify and correct faults before they cause catastrophic failures

Bracamonte, J., de Morillo, N., Universidad del Zulia L.U.Z., School of Electrical Engineering,; Marcano, M., Tarantino, R., PDVSA C.R.P.

Power system failures directly impact the processes in any industry. One approach to avoiding such failures is to identify a potential fault before it occurs and take the appropriate corrective actions. The objective is to design a fault detection and diagnosis system (FDDS) that allows identifying incipient faults at an early stage. To accomplish this, the following steps were taken in the investigation: turbogenerator input/process/output (I/P/O) diagrams, failure history, calculated risk analysis, root-cause analysis and general system design. Our case study was developed on condensate-type steam turbines with simple

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