A centralized energy management system for isolated microgrids

Daniel E. Olivares, Claudio A. Canizares, Mehrdad Kazerani

Research output: Contribution to journalArticlepeer-review

445 Scopus citations

Abstract

This paper presents the mathematical formulation of the microgrid's energy management problem and its implementation in a centralized Energy Management System (EMS) for isolated microgrids. Using the model predictive control technique, the optimal operation of the microgrid is determined using an extended horizon of evaluation and recourse, which allows a proper dispatch of the energy storage units. The energy management problem is decomposed into Unit Commitment (UC) and Optimal Power Flow (OPF) problems in order to avoid a mixed-integer non-linear formulation. The microgrid is modeled as a three-phase unbalanced system with presence of both dispatchable and non-dispatchable distributed generation. The proposed EMS is tested in an isolated microgrid based on a CIGRE medium-voltage benchmark system. Results justify the need for detailed three-phase models of the microgrid in order to properly account for voltage limits and procure reactive power support.

Original languageEnglish
Article number6805674
Pages (from-to)1864-1875
Number of pages12
JournalIEEE Transactions on Smart Grid
Volume5
Issue number4
DOIs
StatePublished - Jul 2014
Externally publishedYes

Keywords

  • Energy management system
  • OPF
  • microgrid
  • model predictive control
  • optimal dispatch
  • smart grid

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