COMBINED CYCLE POWER GENERATION OPTIMIZATION SYSTEM

摘要

Methods and apparatus for optimizing operation of a combined cycle power plant which combines the use of both gas and steam turbines in a single power generating plant. In one embodiment there is provided a closed-loop hybrid neural network-first principles optimizer for optimally allocating fuel across power generation plant blocks and sub systems to minimize fuel costs while meeting capacity and ramp-rate commitments. Embodiments of the methods and apparatus include a steady state plant optimization model and a dynamic plant optimization model.

主权项

1. An optimization system for a combined cycle power plant having one or more gas turbines, one or more steam turbines, and one or more boilers associated with the one or more steam turbines, wherein a duct burner is associated with at least one of said boilers, said optimization system comprising:
a load prediction model for determining a predicted maximum load for the plant; a plant optimization model including:
a plant power model for determining a predicted plant power produced by the plant, wherein said predicted plant power is determined by summing a total predicted gas turbine power produced by the one or more gas turbines and a total predicted steam turbine power produced by the one or more steam turbines, anda duct burner power model for determining a predicted duct burner power indicative of plant power due solely to one or more duct burners that are associated with the one or more boilers for producing steam for the one or more steam turbines; and an optimizer for determining optimal setpoint values for manipulated variables associated with operation of the plant, given (a) a goal associated with operation of the plant and (b) constraints associated with operation of the plant, wherein the optimizer uses said predicted maximum load for the plant, said predicted plant power produced by the plant and said predicted duct burner power to determine the setpoint values.