METHOD FOR CONTROLLING THE LOAD VARIATIONS IN A GAS TURBINE

摘要

A method is described for controlling load variations in a gas turbine. The method comprises reducing the flow of gaseous fuel entering the combustor to a predefined minimum value, if an increase is observed in the rotation regime of said turbine above a predefined maximum value and a total reduction in the load, activating a selective feeding sequence of the burners if the turbine is operating in normal functioning or premixed flame mode, modifying the angulation of the adjustable stator vanes, in order to reduce the speed rate of the compressor, and opening one or more anti- surge valves and one or more overboard bleeds, in order to reduce the air flow at the inlet of the combustor.