Method for operating a gas turbine and gas turbine unit for carrying out said method

摘要

The invention relates to a method for operating a gas turbine (11), comprising a compressor (12), a turbine (14) and a combustor (13) with a pilot burner group (15a), a rich premix burner group (15b) and a lean premix burner group (15c), under changing composition of the incoming fuel gas (16), said method comprising the steps of:
—� Continuously measuring in real time the composition of the fuel gas (16); and
—� controlling the operation of said gas turbine (11) and the combustion of said burners (15a-c) by using said real time fuel gas composition measurements.