FIELD: gas turbines.
SUBSTANCE: gas turbine including a fuel gas supply system intended for supplying fuel gas from the equipment for supplying fuel through the fuel line to the combustion chamber of the gas turbine; a pressure adjustment valve installed halfway along the fuel line for adjusting the pressure of the fuel gas; a flow rate adjustment valve installed in the fuel line on the downstream side of the pressure adjustment valve for adjusting the flow rate of the fuel gas; and a control apparatus configured so that when the flow rate of the fuel gas passing through the fuel gas supply system is changed, while the degree of opening of the pressure adjustment valve or the pressure P1 on the upstream side of the pressure adjustment valve is consistently changed, the value of the fuel gas flow rate command, determined based on the required value of the load of the gas turbine, is adjusted so as to suppress the change in the degree of opening of the pressure adjustment valve or the pressure P1.
EFFECT: ensured stable operation of the gas turbine, possibility of preventing a situation wherein the operation of the gas turbine may not be continued due to a pressure drop or overpressure occurring on the upstream side of the fuel gas supply system.
14 cl, 5 dwg
