METHOD FOR CONTROLLING A GAS TURBINE

摘要

The present invention relates to a method for controlling a gas turbine operating in the concept of measuring an integral fuel reactivity. To rapidly determine the safe operation range of the gas turbine with respect to flashback and blow-off, the method of the present invention comprises a step of deducing fuel composition and therefore the fuel reactivity by combined measurements of n>1 fuel substances and (n-1) physical-chemical properties of a fuel mixture with fuel components, to derive the concentration of one component for each physico-chemical property of the fuel gas mixture or to determine a ratio of the fuels with known compositions and to adjust one or more operation parameters of the gas turbine at least partially based on the determined property of the fuel gas mixture entering the combustors. With the technical solution of the present invention, it is assured that the gas turbine can operate with varieties of fuel gas under optimized performance and in safe operation ranges with a method for detecting fast changes in fuel gas. In actual applications, the present invention can improve flexibility of gas turbines and cost effectiveness of operation of the gas turbines.