Robust Distributed Coordination of Parallel Restored Subsystems in Wind Power Penetrated Transmission System

Jin Zhao, Hongtao Wang, Yunhe Hou, Qiuwei Wu, N.D. Hatziargyriou, Wen Chang, Yutian Liu

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Abstract

Several parallel restored subsystems exist in the last stage of the build-up restoration process of bulk power systems. The whole system restoration is completed when these subsystems are reconnected and their internal loads are recovered. This paper proposes a robust distributed coordination scheme to achieve reconnection and load recovery of parallel restored subsystems in wind power penetrated transmission systems. First, robust distributed restoration models are constructed considering individual subsystems under uncertain conditions. Then, an inner-outer nested upper-lower (IOUL) iterative algorithm is developed to solve the constructed models. The robust distributed coordination can be realized according to convergence. The proposed algorithm solves the complex non-convex model with uncertain variables by iteratively solving the small-scale mixedinteger linear programming (MILP) problem. The robust distributed restoration scheme allows independent decision-making within subsystems and ensures the feasibility of the distributed restoration strategy under uncertain conditions. The effectiveness of the proposed method is validated using three interconnected 6-bus systems and the IEEE 118-bus system, showing improved computational efficiency and restoration acceleration.
Original languageEnglish
JournalI E E E Transactions on Power Systems
Number of pages10
ISSN0885-8950
DOIs
Publication statusAccepted/In press - 2020

Keywords

  • Bulk power system
  • Distributed optimization
  • Power system restoration
  • Sectionalized restoration
  • Wind power penetration

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