Impact of hourly wind power variations on the system operation in the Nordic countries

Hannele Holttinen

    Research output: Contribution to journalArticleScientificpeer-review

    148 Citations (Scopus)

    Abstract

    The variations of wind power production will increase the flexibility needed in the system when significant amounts of load are covered by wind power. When studying the incremental effects that varying wind power production imposes on the power system, it is important to study the system as a whole: only the net imbalances have to be balanced by the system. Large geographical spreading of wind power will reduce variability, increase predictability and decrease the occasions with near zero or peak output. The goal of this work was to estimate the increase in hourly load‐following reserve requirements based on real wind power production and synchronous hourly load data in the four Nordic countries. The result is an increasing effect on reserve requirements with increasing wind power penetration. At a 10% penetration level (wind power production of gross demand) this is estimated as 1·5%–4% of installed wind capacity, taking into account that load variations are more predictable than wind power variations.
    Original languageEnglish
    Pages (from-to)197 - 218
    Number of pages22
    JournalWind Energy
    Volume8
    Issue number2
    DOIs
    Publication statusPublished - 2005
    MoE publication typeA1 Journal article-refereed

    Keywords

    • wind power impacts
    • power system impacts
    • wind power
    • reserve needs
    • wind power fluctuations

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