Stochastic energy management in distribution grids

Gang Wang, Vassilis Kekatos, Georgios B. Giannakis

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Scopus citations

Abstract

Variabilities of renewable energy sources critically challenge contemporary power distribution grids. Depending on grid conditions, solar energy may have to be curtailed to comply with network limitations. On the other hand, smart inverters installed with solar panels enable for reactive power support at fast response rates. Existing energy management schemes may not efficiently integrate intermittent generation. Inherent operational flexibilities, such as flexible voltage regulation margins and instantaneous inverter or distribution line overloading could be judiciously exploited. To that end, an ergodic energy management framework is put forth calling for joint control of active and reactive power using smart inverters. Although tighter operational constraints are enforced in an average sense, looser margins are satisfied at all times. A stochastic dual subgradient solver is devised using an approximate linearized grid model. The algorithm is distributionfree, and enjoys provable convergence. Numerical tests on a 56-bus distribution feeder demonstrate that the novel scheme yields lower energy cost upon its deterministic counterpart.

Original languageEnglish (US)
Title of host publication2016 IEEE International Conference on Acoustics, Speech and Signal Processing, ICASSP 2016 - Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages3476-3480
Number of pages5
ISBN (Electronic)9781479999880
DOIs
StatePublished - May 18 2016
Event41st IEEE International Conference on Acoustics, Speech and Signal Processing, ICASSP 2016 - Shanghai, China
Duration: Mar 20 2016Mar 25 2016

Publication series

NameICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings
Volume2016-May
ISSN (Print)1520-6149

Other

Other41st IEEE International Conference on Acoustics, Speech and Signal Processing, ICASSP 2016
Country/TerritoryChina
CityShanghai
Period3/20/163/25/16

Bibliographical note

Funding Information:
This work was supported by NSF grants 1423316, 1442686, 1508993, and 1509040

Publisher Copyright:
© 2016 IEEE.

Keywords

  • Power distribution grids
  • smart inverters
  • stochastic dual subgradient
  • voltage regulation

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