A simulation and optimisation study: Towards a decentralised microgrid, using real world fluctuation data

Daniel Quiggin*, Sarah Cornell, Michael Tierney, Richard Buswell

*Corresponding author for this work

Research output: Contribution to journalArticle (Academic Journal)peer-review

51 Citations (Scopus)

Abstract

A transition to a decentralised, decarbonised energy system for the domestic sector is constrained by the difficulty of obtaining energy balance between fluctuating demand and the intermittent, non-dispatchable power supply delivered by most renewables. A microgrid system including a mix of renewable generation technologies, energy storage and demand response (DR) systems has been modelled using a linear programming approach, based on real world data of residential energy consumption and weather variables. This model allows the exploration of the effects of fluctuations in demand and supply, microgrid scale and configuration, energy management options and alternative optimisation criteria. The model demonstrates quantitatively that a mixed-renewables microgrid system can reduce demand fluctuations and improve energy balance. Peak demand hour fluctuations were reduced by up to 19% for a simulated microgrid containing 144 households with one renewable unit and four batteries per household, with a renewables mix of 83% photovoltaic (PV) panels and 17% wind turbines. With this system, the demand on macrogrid energy supply was reduced by 16%, CO 2 emissions associated with energy use were reduced by 10% for all hours of operation, and by 74% during the hours of renewable supply. These findings suggest that microgrids using contemporary technologies can contribute significantly to CO 2 mitigation targets.

Original languageEnglish
Pages (from-to)549-559
Number of pages11
JournalEnergy
Volume41
Issue number1
DOIs
Publication statusPublished - May 2012

Keywords

  • Decentralised energy
  • Decentralised energy resources
  • Demand response
  • Greenhouse gases
  • Microgrid
  • Renewable energy

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