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Distributed secondary control with ocean thermal energy generation for the frequency stability improvement of island microgrids

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  • Su, Jinshuo
  • Xie, Haimin
  • He, Zihan
  • Liu, Hui
  • Yang, Shaohua

Abstract

Island microgrids (MGs) are characterized by a high proportion of intermittent renewable energy resources. Generally, these units operate in maximum power point tracking mode to maximize the economic benefits of MGs. However, this will lead to insufficient regulation reserves for maintaining frequency stability, especially when traditional generation units are gradually being phased out. Ocean thermal energy generation can provide additional frequency regulation reserves due to its vast and persistent performance. This paper proposes a secondary frequency control strategy with ocean thermal energy generators (OTEGs) participation for island MGs. OTEGs can convert ocean thermal energy into electric power to compensate for the power shortage of MGs when regulation reserves are insufficient. Therefore, the frequency stability of island MGs is improved. Besides, a leader-follower-based distributed control strategy is proposed for OTEGs to achieve frequency restoration and accurate power sharing through a sparse communication network. In the proposed control strategy, global power collected by distribution-level phasor measurement units contributes to the improved dynamic performance of secondary frequency regulation. Furthermore, the Lyapunov stability theorem proves the proposed controller's stability. Finally, numerical simulations on the IEEE 34-bus system validate the effectiveness of the proposed control strategy.

Suggested Citation

  • Su, Jinshuo & Xie, Haimin & He, Zihan & Liu, Hui & Yang, Shaohua, 2025. "Distributed secondary control with ocean thermal energy generation for the frequency stability improvement of island microgrids," Energy, Elsevier, vol. 336(C).
    • Handle: RePEc:eee:energy:v:336:y:2025:i:c:s036054422504201x
    DOI: 10.1016/j.energy.2025.138559
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    References listed on IDEAS

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    1. Su, Jinshuo & Zhang, Hongcai & Liu, Hui & Liu, Dundun, 2025. "Lyapunov-based distributed secondary frequency and voltage control for distributed energy resources in islanded microgrids with expected dynamic performance improvement," Applied Energy, Elsevier, vol. 377(PC).
    2. Langer, Jannis & Infante Ferreira, Carlos & Quist, Jaco, 2022. "Is bigger always better? Designing economically feasible ocean thermal energy conversion systems using spatiotemporal resource data," Applied Energy, Elsevier, vol. 309(C).
    3. Hu, Zheng & Chen, Yongping & Zhang, Chengbin, 2024. "Role of R717 blends in ocean thermal energy conversion organic Rankine cycle," Renewable Energy, Elsevier, vol. 221(C).
    4. Liu, Yanjun & Xue, Yifan & Chen, Yun & Liu, Weimin & Ge, Yunzheng & Zhang, Li, 2022. "Identification of nonparametric thermodynamic model and optimization of ocean thermal energy conversion radial inflow turbine," Applied Energy, Elsevier, vol. 321(C).
    5. Malik, Anam & Ravishankar, Jayashri, 2018. "A hybrid control approach for regulating frequency through demand response," Applied Energy, Elsevier, vol. 210(C), pages 1347-1362.
    6. Lu, Beichen & Yu, Yanni & Tian, Mingqian & Chen, Yun & Zhang, Li & Liu, Yanjun, 2024. "Experimental study of a high-power generation platform for ocean thermal energy conversion," Energy, Elsevier, vol. 309(C).
    7. Mao, Liangjie & Wei, Changjiang & Zeng, Song & Cai, Mingjie, 2023. "Heat transfer mechanism of cold-water pipe in ocean thermal energy conversion system," Energy, Elsevier, vol. 269(C).
    8. Liu, Zhengxuan & Zhou, Yuekuan & Yan, Jun & Tostado-Véliz, Marcos, 2023. "Frontier ocean thermal/power and solar PV systems for transformation towards net-zero communities," Energy, Elsevier, vol. 284(C).
    9. Li, Xiang & Lepour, Dorsan & Heymann, Fabian & Maréchal, François, 2023. "Electrification and digitalization effects on sectoral energy demand and consumption: A prospective study towards 2050," Energy, Elsevier, vol. 279(C).
    10. Zhao, Teyang & Liu, Hui & Su, Jinshuo & Wang, Ni & Luo, Zhiqiang, 2025. "Coordinated control for distributed energy resources in Islanded microgrids with improved frequency regulation capability," Renewable Energy, Elsevier, vol. 244(C).
    11. Chang, Shoujin & Lei, Rui & He, Jiaxin & Li, Xuan & Li, Yuhan & Hu, Haitao, 2025. "Numerical modelling and performance analysis of closed ocean thermal energy conversion cycles in the South China sea," Energy, Elsevier, vol. 316(C).
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