Robust power control design for a small pressurized water reactor using an H infinity mixed sensitivity method

Yan Xu; Wang Pengfei; Qing Junyan; Wu Shifa; Zhao Fuyu

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자료유형: 학술저널

저자정보: Yan Xu Wang Pengfei Qing Junyan Wu Shifa Zhao Fuyu

저널정보: 한국원자력학회 Nuclear Engineering and Technology Nuclear Engineering and Technology 제52권 제7호

발행연도: 2020.1

수록면: 1,443 - 1,451 (9page)

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The objective of this study is to design a robust power control system for a small pressurized water reactor (PWR) to achieve stable power operations under conditions of external disturbances and internal model uncertainties. For this purpose, the multiple-input multiple-output transfer function models of the reactor core at five power levels are derived from point reactor kinetics equations and the Mann's thermodynamic model. Using the transfer function models, five local reactor power controllers are designed using an H infinity (H∞) mixed sensitivity method to minimize the core power disturbance under various uncertainties at the five power levels, respectively. Then a multimodel approach with triangular membership functions is employed to integrate the five local controllers into a multimodel robust control system that is applicable for the entire power range. The performance of the robust power system is assessed against 10% of full power (FP) step load increase transients with coolant inlet temperature disturbances at different power levels and large-scope, rapid ramp load change transient. The simulation results show that the robust control system could maintain satisfactory control performance and good robustness of the reactor under external disturbances and internal model uncertainties, demonstrating the effective of the robust power control design.

참고문헌 (27)

참고문헌 신청

J. Yang / 2014 / ACPR100 concept design of multipurpose compact Reactor / Atomic Energy Sci. Technol 48:1844~1849

W.M. Stacey / 2007 / Nuclear Reactor Physics / John Wiley & Sons :162~167

L. Liu / 2013 / Application of fuzzy robust control method in power control of nuclear reactors / Atomic Energy Sci. Technol 47:624~629

W.Y. Wu / 2013 / Design and Simulation of Reactor Power Controller Based on QFT Theory

G. Li / 2013 / Flexibility control and simulation with multi-model and LQG/LTR design for PWR core load following operation / Ann. Nucl. Energy 56:179~188

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