Patent ID: 8387356

Claim:
A combined cycle power plant comprising: a gas turbine; a steam turbine; a heat recovery steam generator (HRSG) fluidly connected between the gas turbine and the steam turbine, the HRSG being configured and disposed for supplementary firing; a reheat attemperator connected to a feed water pump via a feed water line, the feed water pump received a low pressure feed water from a low pressure drum evaporator via a low pressure conduit extending from the HRSG, the at least one attemperator fluidly connected to a superheater portion of the HRSG to supply steam to an intermediate pressure stage of the steam turbine; and a power output augmentation system operatively coupled to the HRSG, the power output augmentation system being configured and disposed control the feed water pump to selectively lower a set point temperature of the at least one reheat attemperator only during select periods in order to increase power output of the combined cycle power plant.