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Model-Free Coordinated Control for MHTGR-Based Nuclear Steam Supply Systems

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  • Zhe Dong

    (Institute of Nuclear and New Energy Technology (INET), Tsinghua University, Beijing 100084, China
    Collaborative Innovation Center of Advanced Nuclear Energy Technology of China, Beijing 100084, China)

Abstract

The modular high temperature gas-cooled reactor (MHTGR) is a typical small modular reactor (SMR) that offers simpler, standardized and safer modular design by being factory built, requiring smaller initial capital investment, and having a shorter construction period. Thanks to its small size, the MHTGRs could be beneficial in providing electric power to remote areas that are deficient in transmission or distribution and in generating local power for large population centers. Based on the multi-modular operation scheme, the inherent safety feature of the MHTGRs can be applicable to large nuclear plants of any desired power rating. The MHTGR-based nuclear steam supplying system (NSSS) is constituted by an MHTGR, a side-by-side arranged helical-coil once-through steam generator (OTSG) and some connecting pipes. Due to the side-by-side arrangement, there is a tight coupling effect between the MHTGR and OTSG. Moreover, there always exists the parameter perturbation of the NSSSs. Thus, it is meaningful to study the model-free coordinated control of MHTGR-based NSSSs for safe, stable, robust and efficient operation. In this paper, a new model-free coordinated control strategy that regulates the nuclear power, MHTGR outlet helium temperature and OTSG outlet overheated steam temperature by properly adjusting the control rod position, helium flowrate and feed-water flowrate is established for the MHTGR-based NSSSs. Sufficient conditions for the globally asymptotic closed-loop stability is given. Finally, numerical simulation results in the cases of large range power decrease and increase illustrate the satisfactory performance of this newly-developed model-free coordinated NSSS control law.

Suggested Citation

  • Zhe Dong, 2016. "Model-Free Coordinated Control for MHTGR-Based Nuclear Steam Supply Systems," Energies, MDPI, vol. 9(1), pages 1-14, January.
    • Handle: RePEc:gam:jeners:v:9:y:2016:i:1:p:37-:d:61978
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    References listed on IDEAS

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    1. Vujić, Jasmina & Bergmann, Ryan M. & Škoda, Radek & Miletić, Marija, 2012. "Small modular reactors: Simpler, safer, cheaper?," Energy, Elsevier, vol. 45(1), pages 288-295.
    2. Rowinski, Marcin Karol & White, Timothy John & Zhao, Jiyun, 2015. "Small and Medium sized Reactors (SMR): A review of technology," Renewable and Sustainable Energy Reviews, Elsevier, vol. 44(C), pages 643-656.
    3. Zhe Dong, 2012. "Dynamic Output Feedback Power-Level Control for the MHTGR Based On Iterative Damping Assignment," Energies, MDPI, vol. 5(6), pages 1-34, June.
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    Cited by:

    1. Yunlong Zhu & Zhe Dong & Xiaojin Huang & Yujie Dong & Yajun Zhang & Zuoyi Zhang, 2022. "Passivity-Based Power-Level Control of Nuclear Reactors," Energies, MDPI, vol. 15(14), pages 1-11, July.
    2. Dong, Zhe & Pan, Yifei & Zhang, Zuoyi & Dong, Yujie & Huang, Xiaojin, 2017. "Model-free adaptive control law for nuclear superheated-steam supply systems," Energy, Elsevier, vol. 135(C), pages 53-67.
    3. Dong, Zhe & Liu, Miao & Zhang, Zuoyi & Dong, Yujie & Huang, Xiaojin, 2019. "Automatic generation control for the flexible operation of multimodular high temperature gas-cooled reactor plants," Renewable and Sustainable Energy Reviews, Elsevier, vol. 108(C), pages 11-31.
    4. Jiang, Di & Dong, Zhe, 2020. "Dynamic matrix control for thermal power of multi-modular high temperature gas-cooled reactor plants," Energy, Elsevier, vol. 198(C).

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