Message passing for distributed optimisation of power allocation with renewable resources

Elizabeth Harrison, David Saad, K.Y. Michael Wong

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

Abstract

The increase in renewable energy generators introduced into the electricity grid is putting pressure on its stability and management as predictions of renewable energy sources cannot be accurate or fully controlled. This, with the additional pressure of fluctuations in demand, presents a problem more complex than the current methods of controlling electricity distribution were designed for. A global approximate and distributed optimisation method for power allocation that accommodates uncertainties and volatility is suggested and analysed. It is based on a probabilistic method known as message passing [1], which has deep links to statistical physics methodology. This principled method of optimisation is based on local calculations and inherently accommodates uncertainties; it is of modest computational complexity and provides good approximate solutions.We consider uncertainty and fluctuations drawn from a Gaussian distribution and incorporate them into the message-passing algorithm. We see the effect that increasing uncertainty has on the transmission cost and how the placement of volatile nodes within a grid, such as renewable generators or consumers, effects it.
Original languageEnglish
Title of host publicationThe proceedings of the 2nd International Conference on Intelligent Green Building and Smart Grid (IGBSG)
PublisherIEEE
Number of pages6
ISBN (Print)978-1-4673-8474-2
DOIs
Publication statusPublished - 11 Aug 2016
Event2nd International Conference on Intelligent Green Building and Smart Grid - Prague, Czech Republic
Duration: 27 Jun 201629 Jun 2016

Conference

Conference2nd International Conference on Intelligent Green Building and Smart Grid
Abbreviated titleIGBSG
CountryCzech Republic
CityPrague
Period27/06/1629/06/16

Bibliographical note

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Funding: Alstom; EPSRC (Industrial CASE Studentship 12330048); and Research Grants Council of Hong Kong (grant numbers 604512, 605813).

Keywords

  • message passing
  • optimisation
  • power flow
  • distribution
  • renewable energy
  • uncertainty
  • electricity
  • networks

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  • Cite this

    Harrison, E., Saad, D., & Wong, K. Y. M. (2016). Message passing for distributed optimisation of power allocation with renewable resources. In The proceedings of the 2nd International Conference on Intelligent Green Building and Smart Grid (IGBSG) IEEE. https://doi.org/10.1109/IGBSG.2016.7539451