Areva Np Gmbh

Framatome Gmbh

Alain Grossetete

Philippe Chevrel

Mohamed Yagoubi

Jennifer Martin

Jean Lucien Mourlevat

Pierre Barthelet

Lori Lemazurier

A method regulates operating parameters comprising at least the mean temperature of the core (T), and the axial power (AO) imbalance. The method includes development of a vector (U) of control values of the nuclear reactor by a supervisor () implementing a predictive control algorithm; development of a vector (u) of corrective values of the nuclear reactor controls by a regulator () implementing a sequenced gain control algorithm; development of a vector (U) of corrected values of the commands of the nuclear reactor, by using the vector (U) of the values of the commands produced by the supervisor () and the vector (u) of the corrective values of the commands produced by the regulator (); and regulation of the operating parameters of the nuclear reactor, by controlling actuators using the vector (U) of the corrected values of the controls.

Method for regulating operating parameters of a nuclear reactor and corresponding nuclear reactor

A method for controlling a pressurized water nuclear reactor is provided, including core producing thermal power, sensors for acquiring the mean temperature of the primary coolant and for calculating the thermal power, actuators for controlling the axial distribution of power, the control method including:

Method for controlling a pressurized water nuclear reactor during stretchout

This invention relates to a control method for a pressurized water nuclear reactor, which comprises a core generating thermal power and means of acquiring magnitudes representative of core operating conditions. The method comprises a step to regulate the temperature of the primary coolant, if the temperature of the primary coolant for a given thermal power is outside a predefined set temperature interval (&#x394;TREF) depending on the reactor power. The set temperature interval (&#x394;TREF) is characterized by variable amplitude (&#x394;T) on a thermal power range between N % and 100% nominal power, where N is between 0 and 100 and comprises a zero amplitude at 100% nominal power, a zero amplitude at N % nominal power.

Control method for a pressurized water nuclear reactor

The present invention relates to a method for controlling a pressurized water reactor () comprising the steps that involve measuring the effective power (Pe) of the nuclear reactor; acquiring a reference value for the desired power (Pc); acquiring an estimated duration (DURATION) for the increase in power in order to achieve said reference value of the target power (Pc) desired, said estimated duration (DURATION) corresponding to the time taken for the power to increase from said effective power (Pe) to said reference value for the target power (Pc); determining the reference position (Z) of at least one control rod cluster among said plurality of control rod clusters () in order to achieve said reference value for said target power (Pc) desired as a function of said estimated duration (DURATION), of said measured effective power (Pe) and of said reference value for said target power (Pc); monitoring the position of said at least one control rod cluster so as to position it in its reference position (Z).

Method for operating a pressurized water reactor during load monitoring

The invention relates to a method for regulation of operational parameters of the core of a pressurised water nuclear reactor comprising:

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Nanterre, France

Alain Grossetete