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Coordinated scheduling of inter-regional systems connected via HVDC links: A distributionally robust approach with emergency power support for frequency stability

Author

Listed:
  • He, Chuan
  • Zhang, Yuqi
  • Yin, Yue
  • Tan, Jing
  • Liu, Tianqi
  • An, Zhi
  • Xing, Dong
  • Liang, Wenju

Abstract

—The increasing penetration of renewable energy and the application of high voltage direct current (HVDC) transmission technology have gradually complicated the operation of inter-regional power systems. Under these circumstances, a two-stage moment-based distributionally robust scheduling model of inter-regional systems connected via HVDC links is proposed. The proposed model minimizes total operation cost, considering energy complementarity of generating resources. Primary frequency response (PFR) model of thermal/cascaded hydropower/pumped storage units and emergency frequency support of HVDC links is proposed to improve system frequency regulation. Then a two-stage moment-based DRO model is proposed to handle the uncertainty of photovoltaic (PV) generation. The proposed DRO-based scheduling model is then reformulated as mixed integer linear programming (MILP) for the solution. Numerical results show that the proposed model could effectively improve frequency stability with coordinated scheduling of inter-regional power systems while balancing solution robustness and economy.

Suggested Citation

  • He, Chuan & Zhang, Yuqi & Yin, Yue & Tan, Jing & Liu, Tianqi & An, Zhi & Xing, Dong & Liang, Wenju, 2026. "Coordinated scheduling of inter-regional systems connected via HVDC links: A distributionally robust approach with emergency power support for frequency stability," Renewable Energy, Elsevier, vol. 266(C).
    • Handle: RePEc:eee:renene:v:266:y:2026:i:c:s0960148126004805
    DOI: 10.1016/j.renene.2026.125655
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