Active Distribution Grid Management based on Robust AC Optimal Power Flow

Tiago Soares*, Richard J. Bessa, Pierre Pinson, Hugo Morais

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

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Abstract

Further integration of distributed renewable energy sources in distribution systems requires a paradigm change in grid management by the distribution system operators (DSO). DSOs are currently moving to an operational planning approach based on activating flexibility from distributed energy resources in day/hour-ahead stages. This paper follows the DSO trends by proposing a methodology for active grid management by which robust optimization is applied to accommodate spatial-temporal uncertainty. The proposed method entails the use of a multi-period AC-OPF, ensuring a reliable solution for the DSO. Wind and PV uncertainty is modeled based on spatial-temporal trajectories, while a convex hull technique to define uncertainty sets for the model is used. A case study based on real generation data allows illustration and discussion of the properties of the model. An important conclusion is that the method allows the DSO to increase system reliability in the real-time operation. However, the computational effort grows with increases in system robustness.
Original languageEnglish
JournalI E E E Transactions on Smart Grid
Volume9
Issue number6
Pages (from-to)6229 - 6241
ISSN1949-3053
DOIs
Publication statusPublished - 2018

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Keywords

  • Decision-making
  • Uncertainty
  • Distribution system operator (DSO)
  • Robust optimization
  • Solar power
  • Wind power

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