A review on the control methods in small modular reactors
Due to the significant advantages such as short construction cycle,high safety performance,low operation and maintainence costs and strong adaptability,the small modular reactors(SMRs)have long been a focus of researchers around the world.Nowadays,it has also become a strategic need of our country.Re-cently,it has been clear that one of the promising development directions of intelligent control systems of the SMRs lies in the unmanned control systems therein some advanced control methods are applied with high ro-bustness and reliability.These control systems can track load demand in real-time through efficient control ac-tions and thus effectively improve the stability,reliability and safety of SMRs.Meanwhile,these systems can also reduce or even eliminate the dependence on operators significantly.In this paper,the mainstream control methods applied in SMRs are briefly reviewed.Firstly,principles and characteristics of the traditional PID control method based on the classical cybernetics are surveyed.Then,some intelligent control methods with higher accuracy and efficiency implemented in the reactor control systems,such as the fuzzy logic inference method,the neural network control method,the compound control method and the composite control method are summarized.Finally,facing to the requirements and technical problems of control systems in the SMRs,some potential research directions of intelligent control methods are prospected.
Small modular reactorReactor controlPID controlIntelligent controlCompound control
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