The impact of increased interconnection on electricity systems with large penetrations of wind generation: A case study of Ireland and Great Britain

E. Denny, A. Tuohy, Peter Meibom, A. Keane, D. Flynn, A. Mullane, M. O'Malley

    Research output: Contribution to journalJournal articleResearchpeer-review

    Abstract

    Increased interconnection has been highlighted as potentially facilitating the integration of wind generation in power systems by increasing the flexibility to balance the variable wind output. This paper utilizes a stochastic unit commitment model to simulate the impacts of increased interconnection for the island of Ireland with large penetrations of wind generation. The results suggest that increased interconnection should reduce average prices in Ireland, and the variability of those prices. The simulations also suggest that while increased interconnection may reduce carbon dioxide emissions in Ireland, Great Britain would experience an increase in emissions, resulting in total emissions remaining almost unchanged. The studies suggest that increased interconnection would not reduce excess wind generation. This is because under unit commitment techniques which incorporate wind power forecasts in the scheduling decisions, wind curtailment is minimal even with low levels of interconnection. As would be expected an increase in interconnection should improve system adequacy considerably with a significant reduction in the number of hours when the load and reserve constraints are not met.
    Original languageEnglish
    JournalEnergy Policy
    Volume38
    Issue number11
    Pages (from-to)6946-6954
    ISSN0301-4215
    DOIs
    Publication statusPublished - 2010

    Keywords

    • Intelligent energy systems

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