MODEL-BASED COMBINED CYCLE POWER PLANT LOAD CONTROL

A control system uses a modeled steam turbine megawatt (power) change attributed to a gas turbine demand change (i.e., a steam turbine to gas turbine transfer function) within a conventional closed loop feedback control scheme to perform control of a combined cycle power plant. This control system i...

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Bibliographische Detailangaben
Hauptverfasser: CHENG, XU, HUFF, FREDERICK C, RAO, RANJIT R, GERIDEAU, BENJAMIN F
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:A control system uses a modeled steam turbine megawatt (power) change attributed to a gas turbine demand change (i.e., a steam turbine to gas turbine transfer function) within a conventional closed loop feedback control scheme to perform control of a combined cycle power plant. This control system implements a form of internal model control and provides better unit megawatt (power) set-point tracking and disturbance variable rejection for overall more robust control, and thus operates to optimize the gas turbine operation of the combined cycle power plant in a manner that provides cost savings over time.