Uncertainty quantifi cation of the power control system of a small PWR with coolant temperature perturbation

Xiaoyu Li; Chuhao Li; Yang Hu; Yongqi Yu; Wenjie Zeng; Haibiao Wu

doi:https://doi.org/10.1016/j.net.2022.01.005

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자료유형: 학술저널

저자정보: Xiaoyu Li (School of Nuclear Science and Technology, University of South China) Chuhao Li (School of Nuclear Science and Technology, University of South China) Yang Hu (School of Nuclear Science and Technology, University of South China) Yongqi Yu (School of Nuclear Science and Technology, University of South China) Wenjie Zeng (School of Nuclear Science and Technology, University of South China) Haibiao Wu (School of Nuclear Science and Technology, University of South China)

저널정보: 한국원자력학회 Nuclear Engineering and Technology Nuclear Engineering and Technology 제54권 제6호

발행연도: 2022.6

수록면: 2,048 - 2,054 (7page)

DOI: https://doi.org/10.1016/j.net.2022.01.005

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The coolant temperature feedback coefficient is an important parameter of reactor core power controlsystem. To study the coolant temperature feedback coefficient influence on the core power controlsystem of small PWR, the core power control system is built with the nonlinear model and fuzzy controltheory. Then, the uncertainty quantification method of reactor core parameters is established based onthe Latin hypercube sampling method and the Bootstrap method. Finally, under the conditions ofreactivity step perturbation and coolant inlet temperature step perturbation, uncertainty analysis for twocases is carried out. The result shows that with fuzzy controller and fuzzy PID controller, the uncertaintyof the coolant temperature feedback coefficient affects the core power control system, and the maximumuncertainties of core relative power, coolant temperature deviation, fuel temperature deviation and totalreactivity are acceptable

#Uncertainty quantification #Coolant temperature feedback reactivity #Core power control system #Small PWR

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Xiaoyu Li

소속기관 Fundamental Science on Nuclear Safety and Simulation Technology Laboratory, Harbin Engineering Univ