Nuclear Power Plant, Control Device for Nuclear Power Plant, and Control Method for Nuclear Power Plant

A control device for a nuclear power plant in which steam generated in a nuclear reactor is supplied to a high-pressure turbine through a main steam control valve, and a portion of the steam generated in the nuclear reactor is supplied to a moisture separation heater through an adjustment valve to heat exhaust steam from the high-pressure turbine,

• the control device comprising:
• an integrated plant control section that determines a turbine power generator output command and a nuclear reactor thermal output command from a power generation output command provided;
• a main steam control valve control section that determines an opening degree command for the main steam control valve in response to the turbine power generator output command;
• a nuclear reactor control section that determines a nuclear reactor operation command and a nuclear reactor pressure setting value in response to the nuclear reactor thermal output command;
• and a pressure control section that controls an opening degree of the adjustment valve in accordance with a difference between the nuclear reactor pressure setting value and the nuclear reactor pressure measurement value.

A control method for a nuclear power plant in which steam generated in a nuclear reactor is supplied to a high-pressure turbine through a main steam control valve, and a portion of the steam generated in the nuclear reactor is supplied to a moisture separation heater through an adjustment valve to heat exhaust steam from the high-pressure turbine,

• the control method comprising:
• determining a turbine power generator output command and a nuclear reactor thermal output command from a power generation output command provided;
• determining an opening degree command for the main steam control valve in response to the turbine power generator output command;
• determining a nuclear reactor operation command and a nuclear reactor pressure setting value in response to the nuclear reactor thermal output command;
• and controlling an opening degree of the adjustment valve in accordance with a difference between the nuclear reactor pressure setting value and the nuclear reactor pressure measurement value.