Patent ID: 6584775
Filing Date: 2003-07-01
Classification: F02C,F05D,F23L,F23R

Abstract:
A method of controlling primary measures for reducing the formation of thermal nitrogen oxides in the combustion process in a gas turbine, the method comprising:determining a relative air mass flow rate through the gas turbine as related to a reference air mass flow rate at a reference ambient air temperature, ambient air pressure, ambient air humidity, inlet guide van position, and compressor inlet temperature, as a function of at least one of actual ambient air temperature, ambient air pressure, ambient air humidity, inlet guide vane position, and compressor inlet temperature; determining relative shaft power output as related to a reference shaft power output at an output shaft of said gas turbine; determining a heat release rate as a function of said relative shaft power output; calculating a combustion process control variable as a function of said relative air mass flow rate and said heat release rate; and controlling a primary measure for reducing the formation of thermal nitrogen oxide in the combustion process of said gas turbine using the combustion process control variable.