AP 1000 reactor core decoupling control system and control method

Abstract

The invention provides an AP 1000 reactor core decoupling control system and control method; the control system comprises an M rod control system connected with a reactor core transfer function model, an AO rod control system, and a decoupling control system connected with the M rod control system and the AO rod control system and further connected with a reactor core model; the reactor core transfer function model feeds back cooling agent average temperature signals and nuclear power signals to the M rod control system and feeds back axial power distribution signals to the AO rod control system; the M rod control system inputs M rod group movement rod positions to the decoupling control system; the AO rod control system inputs AO rod group movement rod positions to the decoupling control system; the decoupling control system inputs the M rod group movement rod positions and the AO rod group movement rod positions, which are compensated, to the reactor core model. The system and the method not only can ensure the response speed of the system, but also can eliminate coupling effects of two rod groups.

Description

technical field [0001] The invention belongs to the technical improvement field of AP1000 core control, and in particular relates to an AP1000 core decoupling control system and a control method. Background technique [0002] In the past few decades, the world's nuclear power technology has been developing continuously, and its safety has made great progress. In addition, the operation and control methods of the world's nuclear power units have also been continuously developed and improved. After the Fukushima accident in Japan, China stipulated that newly built nuclear power units must meet the safety standards of the third generation of nuclear power, among which AP1000 is currently the main reactor type established by China. It can be seen that AP1000 units will develop rapidly in China in the future. [0003] AP1000 adopts passive safety system, which effectively improves the safety of the unit. The reactor control mode of the existing AP1000 nuclear power unit is cont...

AI Technical Summary

Problems solved by technology

However, all the control rods are used to control new problems: in order to weaken the coupling effect between the M rod group and the AO rod group, the AO rod group does not move when the M rod group is used, and the M rod group does not move when the AO rod group moves. In accordance with the principle of priority action of the M rod group, the interlocking design of the M rod group and the AO rod group is carried out, which limits the flexibility of the reactor load tracking and reduces the response speed of the core during load tracking.

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