Nuclear Techniques

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Design and analysis of adaptive power control system for solid fuel molten salt reactor

WANG Jinghua1,2,3, CHENG Maosong1, DAI Zhimin1,2,3   

  1. 1. Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Jiading Campus, Shanghai 201800, China;
    2. University of Chinese Academy of Sciences, Beijing 100049, China;
    3. ShanghaiTech University, Shanghai 201800, China
  • Received:2017-04-21 Revised:2017-05-23 Online:2017-09-10 Published:2017-09-06
  • Supported by:

    Supported by Strategic Priority Research Program of Chinese Academy of Sciences (No.XD02001003)

Abstract:

Background: Thorium-based molten salt reactor (TMSR) nuclear energy system is one of the first batch strategic pilot science and technology projects launched by Chinese Academy of Sciences. It aims to develop nuclear energy system of the fourth-generation reactor. The solid fuel thorium-based molten salt experimental reactor (TMSR-SF1) with thermal power of 10 MW is a fluoride-salt-cooling pebble bed reactor, has its preliminary project and engineering design completed. Reactor power control system is a key part of nuclear reactor, which can realize the normal start-up, power operation and normal shutdown of the reactor, and thus plays an extremely important role in ensuring the safety and stable operation of the reactor. Purpose: This study aims to design a self-adaptive power control system for TMSR-SF1. Methods: Firstly, the adaptive law of adaptive controller is designed based on Lyapunov stability theory. And then, the adaptive model is established in Simulink and numerical research is carried out on the TMSR simulation platform. Finally, the characteristics of the controller are analyzed based on the numerical results. Results: The numerical results show that the adaptive parameter γ is very important to adaptive law, and control system could achieve better tracking performance only when γ is appropriate. When there is unmeasurable disturbances, control system can quickly absorb them and keep working in better condition. Conclusion: The model reference adaptive power controller is stable and reliable, and has strong anti-interference ability, which can satisfy the control requirements of TMSR-SF1's core power following load.

Key words: Solid fuel molten salt reactor, Adaptive controller, MATLAB/Simulink, Power control, Simulation

CLC Number: 

  • TL361