Coordinated Restoration of Transmission and Distribution System Using Decentralized Scheme

Jin Zhao, Hongtao Wang*, Yutian Liu, Qiuwei Wu, Zhaoyu Wang, Yao Liu

*Corresponding author for this work

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Abstract

This paper proposes a new decentralized restoration scheme in order to realize efficient coordinated restoration of the coupled transmission and distribution (TS-DS) system. First, considering the separated operation of the TS operator (TSO) and DS operators (DSOs) and to avoid the TSO data processing burden, the TS-DS system is divided into several subsystems according to their physical connection. Then, in order to implement the independent but coordinated decision-making of the subsystems, a decentralized decision-making framework is constructed by model decoupling and iterative interaction between TS and DS. Furthermore, for the sake of the convergence of the iterative process with non-convex models, a new decentralized optimization method is developed to obtain the optimal coordinated restoration strategy of the TS-DS system. The proposed decentralized restoration scheme achieves independent decision-making of the TSO and DSOs in the coupled TS-DS system, and solves the non-convergence problem of the decentralized optimization method. The effectiveness of the proposed method is validated using two IEEE standard test systems and a real-world power system.
Original languageEnglish
JournalI E E E Transactions on Power Systems
Volume34
Issue number5
Pages (from-to)3428 - 3442
ISSN0885-8950
Publication statusPublished - 2020

Keywords

  • Bulk power system
  • Coordinated restoration
  • Coordination of transmission and distribution systems
  • Power system restoration

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