Power output and emissions based degraded gas turbine tuning and control systems, computer program products and related methods

A computer program product comprising program code embodied in at least one non-transitory computer readable medium, which when executed by at least one computing device having at least one controller, causes the at least one computing device to tune each gas turbine in a set of a plurality of gas turbines based upon a power output parameter and an emissions parameter by:

• commanding each gas turbine in the set to a respective base load level based upon a respective measured ambient condition;
• commanding each gas turbine in the set to adjust a respective actual value of the power output parameter of each gas turbine in the set to match a nominal value of the power output parameter of the set, and subsequently measuring a respective actual value of the emissions parameter for each gas turbine in the set;
• performing a first adjustment to a respective operating parameter of each gas turbine in the set based upon a difference between the respective actual value of the emissions parameter and a nominal value of the emissions parameter at the respective measured ambient condition for each gas turbine in the set,
• wherein the first adjustment to the respective operating parameter of each gas turbine in the set aligns each gas turbine in the set onto a first line in a graphical space plotting the power output parameter versus the emissions parameter,
• wherein the first line is orthogonal to a characteristic line in the graphical space, wherein the characteristic line is a mean characteristic line of all of the plurality of gas turbines in the set, at the respective base load level of each gas turbine in the set, plotting the power output parameter versus the emissions parameter;
• and
• calculating a degradation, indicative of a degradation amount over a time period, for each gas turbine in the set.

A computer-implemented method of tuning each gas turbine in a set of a plurality of gas turbines based upon a power output parameter and an emissions parameter, performed using at least one computing device having at least one controller, the computer-implemented method comprising:

• commanding each gas turbine in the set to a respective base load level based upon a respective measured ambient condition;
• commanding each gas turbine in the set to adjust a respective actual value of the power output parameter of each gas turbine in the set to match a nominal value of the power output parameter of the set, and subsequently measuring a respective actual value of the emissions parameter for each gas turbine in the set;
• performing a first adjustment to a respective operating parameter of each gas turbine in the set based upon a difference between the respective actual value of the emissions parameter and a nominal value of the emissions parameter at the respective measured ambient condition for each gas turbine in the set,
• wherein the first adjustment to the respective operating parameter of each gas turbine in the set aligns each gas turbine in the set onto a first line in a graphical space plotting the power output parameter versus the emissions parameter,
• wherein the first line is orthogonal to a characteristic line in the graphical space, wherein the characteristic line is a mean characteristic line of all of the plurality of gas turbines in the set, at the respective base load level of each gas turbine in the set, plotting the power output parameter versus the emissions parameter;
• and
• calculating a degradation, indicative of a degradation amount over a time period, for each gas turbine in the set.