Impacts of wind power forecast errors on the real-time balancing need

A Nordic case study

Jari Miettinen, Hannele Holttinen

Research output: Contribution to journalArticleScientificpeer-review

1 Citation (Scopus)

Abstract

As the share of wind power increases in the power system, also the share of uncertain generation increases. This, in turn, increases the total balancing energy, real-time balancing power requirements and ramping of the balancing generation. In this study, the impact of wind power forecast errors on the real-time balancing need was investigated for different shares of wind energy (4–30%) in Finland and the Nordic region (comprising Denmark, Finland, Norway and Sweden). The size of the aggregation area of the net imbalances has an impact on the net imbalance volumes. The larger the size of the area is, the smaller the normalised net imbalance volumes are. In Finland, the impact of wind forecast errors on the net imbalance volumes and the largest net imbalances is almost two times as large as the impact of wind power forecast errors in the Nordic region. A shorter forecast horizon has an impact of similar magnitude both on reducing the net imbalance volumes and the largest net imbalances and on aggregating imbalances from large spatial areas. When day-ahead forecasts are not corrected intraday (ID) the impact on the net imbalance volumes and the largest net imbalances is twice as large as when ID forecasts are used.

Original languageEnglish
Pages (from-to)227-233
Number of pages7
JournalIET Renewable Power Generation
Volume13
Issue number2
DOIs
Publication statusPublished - 4 Feb 2019
MoE publication typeNot Eligible

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Miettinen, Jari ; Holttinen, Hannele. / Impacts of wind power forecast errors on the real-time balancing need : A Nordic case study. In: IET Renewable Power Generation. 2019 ; Vol. 13, No. 2. pp. 227-233.
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Impacts of wind power forecast errors on the real-time balancing need : A Nordic case study. / Miettinen, Jari; Holttinen, Hannele.

In: IET Renewable Power Generation, Vol. 13, No. 2, 04.02.2019, p. 227-233.

Research output: Contribution to journalArticleScientificpeer-review

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