FIELD: power engineering.
SUBSTANCE: method to control flow of pilot fuel and flow of main fuel in separate fuel supply into a gas turbine combustion chamber in case of load drop. Speed of changing demand for fuel is monitored, and additional flow of pilot fuel is added, amount of which depends on speed of changing demand for fuel flow. Additional flow of pilot fuel is reduced to zero after load drop. Pilot fuel flow is restricted, when the quantity of additional separation drops to zero. Additional flow of pilot fuel is added, when speed of changing demand for fuel flow exceeds this negative value. Additional flow of pilot fuel is subtracted from the main fuel flow.
EFFECT: invention makes it possible to reduce level of CO and NOx emissions.
6 cl, 1 dwg
