FIELD: power engineering.
SUBSTANCE: invention relates to heat power engineering. Method consists in that outgoing gases after gas turbine is fed into heat-recovery boiler, then steam generated by heat recovery boiler is fed for expansion and action in cogeneration steam turbine. Part of generation steam from steam turbine extractions is supplied on top and bottom network heaters for heating system water, remaining portion of steam is fed to condenser, condensate from condenser is supplied to heat recovery boiler by condensate pump. System water heating is performed in gas circuit heater, installed separately from heat-recovery boiler after top network heater, with effluent gases after heat-recovery boiler, wherein steam extractions are reduced on top and bottom network heaters and increased passage of steam turbine condenser.
EFFECT: invention enables to obtain additional electric power at steam cogeneration turbine of binary CCP-TPP due to more complete utilisation of waste gases heat after heat-recovery boiler in gas circuit heater, arranged separately from heat-recovery boiler.
1 cl, 1 dwg, 1 tbl
