An Incentive-Based Online Optimization Framework for Distribution Grids

Xinyang Zhou, Emiliano Dallanese, Lijun Chen, Andrea Simonetto

Research output: Contribution to journalArticlepeer-review

83 Scopus Citations

Abstract

This paper formulates a time-varying social-welfare maximization problem for distribution grids with distributed energy resources (DERs) and develops online distributed algorithms to identify (and track) its solutions. In the considered setting, network operator and DER-owners pursue given operational and economic objectives, while concurrently ensuring that voltages are within prescribed limits. The proposed algorithm affords an online implementation to enable tracking of the solutions in the presence of time-varying operational conditions and changing optimization objectives. It involves a strategy where the network operator collects voltage measurements throughout the feeder to build incentive signals for the DER-owners in real time; DERs then adjust the generated/consumed powers in order to avoid the violation of the voltage constraints while maximizing given objectives. The stability of the proposed schemes is analytically established and numerically corroborated.

Original languageAmerican English
Pages (from-to)2019-2031
Number of pages13
JournalIEEE Transactions on Automatic Control
Volume63
Issue number7
DOIs
StatePublished - 2018
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 1963-2012 IEEE.

NREL Publication Number

  • NREL/JA-5D00-68133

Keywords

  • Distribution networks
  • exact convex relaxation
  • real-time pricing
  • social welfare maximization
  • time-varying optimization
  • voltage regulation

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