Intelligent coordinated control for combined cycle power plants

A rule-based, digital, closed-loop controller that incorporates “fuzzy” logic has been designed and implemented for the coordinated control of combined cycle power plant units configured by two gas turbines and a steam turbine for power generation. The selected power plant is a combined cycle first generation called PACE 260, installed at the ends of 70´s years. A full scope dynamic mathematical model of the PACE process was applied for the simulation tests of the developed intelligent coordinated control. A comparison was made among the rule-based and analytic approach for coordinated control. The design, implementation and calibration of rule-based controllers are described, based in the development of gas turbines blade path temperature limit and steam turbine throttle pressure limit.