Method and device for levelling out the fluctuation of fuel composition in a gas turbine

Process for equalizing fluctuations of a fuel composition in a gas turbine arrangement comprises regulating a fuel supply to two fuel stages, and adjusting and maintaining the fuel split at a target value between the fuel stages during regulation of the fuel supply. Independent claims are also included for the following: (1) Regulating device for regulating fuel supply to two fuel stages in a gas turbine arrangement; and (2) Gas turbine arrangement containing fuel stages and the above regulating device. Preferred Features: The gas turbine has a pilot fuel stage and a main fuel stage. A regulating valve (15, 17) is provided for regulating the fuel supply to the fuel stages.