Patent ID: 7059132

Claim:
In a power plant comprising a steam generator; a first turbine plant having a steam turbine to be driven by steam from said steam generator, a condenser for condensing steam from said steam turbine, a feedwater system for feeding water from said condenser to said steam generator, and a feedwater amount adjusting mechanism for adjusting an amount of feedwater to said steam generator in said feedwater system; a second turbine plant, which is a different turbine plant from said first turbine plant, having another steam turbine to be driven by steam from said steam generator, another condenser for condensing steam from said another steam turbine, another feedwater system for feeding water from said another condenser to said steam generator, and another feedwater amount adjusting mechanism for adjusting an amount of feedwater to said steam generator in said another feedwater system; and a feedwater control system for controlling said feedwater amount adjusting mechanism of said first turbine plant and said another feedwater amount adjusting mechanism of said second turbine plant; said feedwater control system comprising: a first feedwater controller for controlling said feedwater amount adjusting mechanism of said first turbine plant on the basis of a water level in said steam generator; and a second feedwater controller for controlling said another feedwater amount adjusting mechanism of said second turbine plant on the basis of quantity of state of said condenser or said feedwater system of said first turbine plant.