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Optimal Operation Strategy of Flexible Interconnected Distribution Network Based on SES-VSC-MTDC

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  • Le Ge
  • Limin Lu
  • Xiaodong Yuan
  • Yongzhou Yu

Abstract

The increasing integration of renewable energy is challenging the secure operation of the power system. System flexibility or the capability to address the significant power fluctuations from renewable energy is becoming more and more relevant. Self-energy storage-based multiterminal back-to-back VSC-HVDC (SES-VSC-MTDC) technology is first proposed, and it can realize the power regulation on both temporal and spatial dimensions, which helps improve the power supply reliability and the capacity to accommodate renewable energy of the interconnected distribution networks. Then, to address the coordination control problem of the energy storage and back-to-back VSC-HVDC, a comprehensive control strategy of SES-VSC-MTDC is proposed based on the optimal power flow preprocessing and state of charge interval division. Then, the power regulation model and the energy-power regulation timing model of SES-VSC-MTDC are established for different control strategies. Then, we use the primal-dual interior-point method to solve the developed optimal operation model of flexible interconnected distribution network. Finally, a 33-bus system with four interconnected feeders is used to test the effectiveness of the SES-VSC-MTDC technology and its operation control strategy.

Suggested Citation

  • Le Ge & Limin Lu & Xiaodong Yuan & Yongzhou Yu, 2020. "Optimal Operation Strategy of Flexible Interconnected Distribution Network Based on SES-VSC-MTDC," Mathematical Problems in Engineering, Hindawi, vol. 2020, pages 1-14, August.
    • Handle: RePEc:hin:jnlmpe:9732378
    DOI: 10.1155/2020/9732378
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