Model-based combined cycle power plant load control
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United States of America Patent
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Sep 26, 2017
Grant Date -
Jun 16, 2016
app pub date -
May 11, 2015
filing date -
Dec 15, 2014
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Abstract
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.
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