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Enhancing low voltage ride-through capability of grid-connected photovoltaic plants using superconducting fault current limiters

Author

Listed:
  • Li, Chao
  • Wu, Qi
  • Xin, Ying
  • Li, Bin

Abstract

Photovoltaic (PV) plants are playing an increasingly important role in the power system, and research focuses on their reliability and security have notably grown in recent years. To ensure the stable operation of PV plants, the low voltage ride-through (LVRT) strategy is attracting lots of academic and industrial interest. This is because the LVRT can prevent PV plants from being immediately disconnected during grid faults, which helps avoid slower recovery and extended power outages. Hence, this work proposes to enhance the LVRT capability of the PV plant using superconducting fault current limiters (SFCLs). Besides, the impacts of various types of SFCLs on the LVRT characteristics of the PV plant are thoroughly analyzed. Moreover, this work investigates the performance of various types of SFCLs in enhancing the LVRT capability of PV plants and achieving current-limiting effects, providing valuable insights for the design of SFCLs. A model of a real 35 kV grid-connected PV plant with SFCLs is built, and the theoretical analysis is validated. The results demonstrate the feasibility and superiority of using SFCL in enhancing the LVRT capability of PV plants, serving as a reference for the application of SFCLs in renewable energy stations.

Suggested Citation

  • Li, Chao & Wu, Qi & Xin, Ying & Li, Bin, 2024. "Enhancing low voltage ride-through capability of grid-connected photovoltaic plants using superconducting fault current limiters," Renewable Energy, Elsevier, vol. 231(C).
    • Handle: RePEc:eee:renene:v:231:y:2024:i:c:s0960148124010085
    DOI: 10.1016/j.renene.2024.120940
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