Design And Analysis Of Adaptive Controller For TMSR-SF1 Power Control

As a new kind of energy source,nuclear energy with the advantages of safe,clean,and high efficient,has become a new direction and hotspot in international energy investment.The molten salt reactor is one of the six alternative heap types of the fourth generation advanced nuclear energy system.Owing to its good economy,high inherent safety,anti-nuclear proliferation and many other advantages,the molten salt reactor has good application and development prospect in the field of nuclear system.In 2011,the Shanghai Institute of Applied Physics,Chinese Academy of Sciences,launched the Chinese Academy of Sciences pilot technology-thorium-based molten salt reactor nuclear energy system,dedicated to the development of the fourth generation of advanced thorium-based molten salt reactor nuclear energy system.On the basis of Chinese Academy of Sciences pilot technology-thorium-based molten salt reactor nuclear energy system,and combined with 10 MWth solid fuel thorium-based molten salt reactor(TMSR-SF1)project,this paper designs and studies the power control system of the TMSR-SF1,which provides an important theoretical basis and engineering reference of the future optimization of the thorium-based molten salt reactor power control system.In this paper,by comparing the characteristics of modern control theory,and combined with the TMSR-SF1 power control requirements,a stable and reliable adaptive power controller is designed for TMSR-SF1 experimental reactor based on adaptive control algorithm.Firstly,the power control system of TMSR-SF1 experimental reactor is introduced and described systematically,and the adaptive controller is designed by MIT method and Lyapunov stability theory design method.Secondly,based on TMSR simulation platform,TMSR-SF1 experimental reactor thermal hydraulic model is established by using RELAP5 and model reference adaptive controller of TMSR-SF1 power control system model is established by MATLAB / SIMULINK program.A complete research platform of TMSR-SF1 adaptive power control system is constructed.Finally,the research platform of TMSR-SF1 adaptive power control system is used to simulate the model reference adaptive controller of TMSR-SF1 power control system.The device characteristics of the adaptive controllers based on MIT method and Lyapunov stability theory and the controller based on PID control method are analyzed and compared.The results show that the adaptive power controller based on the Lyapunov stability theory has higher stability,faster response time and smaller overshoot than the controller using the MIT method and the PID method,which can effectively meet the demand of TMSR-SF1 experimental reactor to follow the load change control,and further improve the stability and reliability of TMSR-SF1 experimental reactor power control system.