Coordinated Active Power Dispatch for a Microgrid via Distributed Lambda Iteration

Jianqiang Hu, Michael Z. Q. Chen, Jinde Cao, Josep M. Guerrero

Research output: Contribution to journalJournal articleResearchpeer-review

23 Citations (Scopus)
208 Downloads (Pure)

Abstract

A novel distributed optimal dispatch algorithm is proposed for coordinating the operation of multiple micro units in a microgrid, which has incorporated the distributed consensus algorithm in multi-agent systems and the -iteration optimization algorithm in economic dispatch of power systems. Specifically, the proposed algorithm considers the global active power constraint by adding a virtual pinner and it can deal with the optimization problem with any initial states. That is, it can realize the global optimization and avoid the defect of the initial conditions’ sensitivity in the optimization problem. On the other hand, the proposed optimization algorithm can either be used for off-line calculation or be utilized for on-line operation and has the ability to survive single-point failures and shows good robustness in the iteration process. Numerical studies in a seven bus microgrid demonstrate the effectiveness of the proposed algorithm.
Original languageEnglish
JournalI E E E Journal on Emerging and Selected Topics in Circuits and Systems
Volume7
Issue number2
Pages (from-to)250-261
Number of pages12
ISSN2156-3357
DOIs
Publication statusPublished - Jun 2017

Keywords

  • Microgrid
  • Distributed λ-iteration
  • Pinning consessus
  • Optimal dispatch
  • Markets

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