Abstract: A method for operating a gas turbine system includes utilizing a gas turbine controller to determine a schedule for a firing temperature for operative burners of a second combustor located downstream of a first combustor when the gas turbine system is operating in a low part load mode. During the low part load mode, multiple burners for the second combustor are switched-off. Further, the schedule is determined based on a position of inlet guide vanes of a compressor of the gas turbine system located upstream of both the first and second combustors. The method also includes controlling the firing temperature of the operative burners utilizing the schedule during the low part load mode to keep the gas turbine system within relevant operational limits of the gas turbine system.

Abstract: Power systems are disclosed. The power system may include a turbine component of a gas turbine system, and a computing device(s) in communication with the power plant. The computing device(s) may be configured to control the power plant system by performing various processes including defining a turbine inlet temperature range for a combustion gas flowing through the turbine component of the gas turbine system. The turbine inlet temperature range may be based on a desired operational load for the power plant system. The processes performed by the computing device(s) may also include determining fuel and maintenance cost ranges based on the turbine inlet temperature range, calculating a desired turbine inlet temperature range for the combustion gas based on the determined fuel and maintenance cost range, and adjusting an actual turbine inlet temperature of the combustion gas to be within the calculated, desired turbine inlet temperature range.

Abstract: A method for operating a gas turbine system includes utilizing a gas turbine controller to determine a schedule for a firing temperature for operative burners of a second combustor located downstream of a first combustor when the gas turbine system is operating in a low part load mode. During the low part load mode, multiple burners for the second combustor are switched-off. Further, the schedule is determined based on a position of inlet guide vanes of a compressor of the gas turbine system located upstream of both the first and second combustors. The method also includes controlling the firing temperature of the operative burners utilizing the schedule during the low part load mode to keep the gas turbine system within relevant operational limits of the gas turbine system.

Abstract: Power systems are disclosed. The power system may include a turbine component of a gas turbine system, and a computing device(s) in communication with the power plant. The computing device(s) may be configured to control the power plant system by performing various processes including defining a turbine inlet temperature range for a combustion gas flowing through the turbine component of the gas turbine system. The turbine inlet temperature range may be based on a desired operational load for the power plant system. The processes performed by the computing device(s) may also include determining fuel and maintenance cost ranges based on the turbine inlet temperature range, calculating a desired turbine inlet temperature range for the combustion gas based on the determined fuel and maintenance cost range, and adjusting an actual turbine inlet temperature of the combustion gas to be within the calculated, desired turbine inlet temperature range.

Abstract: The present disclosure refers to a method for operating a gas turbine having a compressor, a combustor, a turbine downstream of the combustor, and a total number of turbine outlet temperature measurement sensors. The method can include supplying a first fuel flow to one of the burners of one combustor, which is smaller than a second fuel flow to another one of the burners the same combustor, selecting a number of turbine outlet temperature measurements which is smaller than a total number of the turbine outlet temperature measurement sensors, and averaging measured temperatures of the selected turbine outlet temperature measurements to obtain an trimmed turbine outlet temperature which is used for controlling operation of the gas turbine.

Abstract: The invention refers to a method for controlling part load operation of a gas turbine comprising a controller wherein a load set point of the controller is greater or equal a minimum load set point. The minimum load set point depends on a hot gas temperature that is calculated based on a hot gas temperature model.

Abstract: The invention concerns a method of operating a gas turbine with staged and/or sequential combustion. The burners of a second stage or a second combustor are singularly and sequentially switched on during loading and switched off during de-loading. The total fuel mass flow and the compressor inlet guide vanes are adjusted at the same time to allow controlling gas turbine operation temperatures and engine power with respect to the required CO emission target.