METHOD FOR PULSE UNLOADING OF POWER GAS TURBINE PLANT DURING SUDDEN LOAD SHEDDING Russian patent published in 2023 - IPC F02C9/00 

FIELD: power industry.

SUBSTANCE: control of gas turbine engines used as power units in the power industries. In the method, using one of the discrete signals from the frequency-dividing automatic (FDA), fuel consumption is reduced at the maximum permissible predetermined rate equal to dGti/dt, kg/h/s + R_dGti/dt, kg/h/s, where dGti/dt is the setting of change rate in fuel consumption, R_dGti/dt is the adjustment of the change rate in fuel consumption to a predetermined value Gti, kg/h + R_Gti, kg/h, where Gti is the fuel gas consumption to provide the selected power, according to the signal from the FDA, R_Gti is the adjustment of fuel gas flow to ensure the selected power according to the signal from the FDA, which is maintained for a predetermined time equal to Tgti, s + R_Tgti, s, where Tgti is the time setting during which fuel consumption is maintained to ensure the selected power according to the signal from the FDA, R_Tgti is the adjustment of the time during which fuel consumption is maintained to ensure the selected power according to a signal from the gas turbine engine, and then, after a predetermined time has elapsed, a transition is made to maintain the predetermined power P_rear, MW, and then the power of the power gas turbine plant is regulated.

EFFECT: reducing the power of a power gas turbine plant not to the minimum electrical load, but to a load corresponding to the signal from the frequency-dividing automatics, to expand the range to compensate for the reduction in the electrical load of the power grid, and in general to improve the quality of the generated electricity and increase the reliability of the operation of the gas turbine power plant.

4 cl, 1 dwg, 3 ex