METHOD OF OPERATING COMBINED-CYCLE POWER PLANT Russian patent published in 2017 - IPC F01K23/10 

FIELD: power engineering.

SUBSTANCE: invention relates to power engineering and can be used at thermal power plants. Disclosed is a method for operation of combined-cycle plant power plant, according to which organic fuel and atmospheric air compressed in a turbocharger are fed into a combustion chamber of a gas turbine plant, wherein process of combustion of organic fuel occurs with formation of combustion products heated to high temperature, formed gases are fed into gas turbine, in gas turbine is there is expansion of gases and gas turbine operation cycle is carried out, spent on actuating turbo-compressor and electric generator, exhaust gases in gas turbine are fed into heat recovery steam generator, steam is generated in exhaust-heat boiler during gas cooling process, steam is fed to steam turbine of condenser type, consisting of high pressure cylinder and low pressure cylinder, and exhaust gases are discharged into atmosphere via an exhaust gas duct, in steam turbine there is expansion of steam and useful work of steam-turbine cycle is carried out, which is spent on actuating electric generator, waste steam in steam turbine is discharged to condenser, where in process of heat exchange with circulating there is condensation of steam, and steam formed in condenser is fed by a pump into heat recovery steam generator, wherein there is intermediate overheating of steam spent in cylinder of high pressure steam turbine steam of condensation type in intermediate steam superheater, located in tail part of heat-recovery boiler after additional fuel combustion chamber.

EFFECT: technical result is higher reliability and efficiency of combined-cycle power plant.

1 cl, 1 dwg