METHOD FOR SUPPLYING A GAS TURBINE PLANT AND GAS TURBINE PLANT

摘要

A method for supplying a gas turbine plant includes the steps of : supplying a gas to premix nozzles (31) of a combustion chamber of the gas turbine; supplying a liquid fuel to the premix nozzles (31) of the gas turbine (11) through a premix supply line; and switching between the step of supplying a gas and the step of supplying a liquid fuel; before supplying the liquid fuel, a water flow rate (QA) is supplied to the premix nozzles (31) through the premix supply line for a cooling time (Ic) in absence of the liquid fuel, before supplying the liquid fuel. A liquid fuel flow rate (Qc) is added to the water flow rate (QA), at least a portion of which is removed while the liquid fuel flow rate (QC) continues to be supplied.