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 language | English |
|---|---|
| Pages (from-to) | 227-233 |
| Number of pages | 7 |
| Journal | IET Renewable Power Generation |
| Volume | 13 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - 4 Feb 2019 |
| MoE publication type | Not Eligible |
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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 journal › Article › Research › peer-review
TY - JOUR
T1 - Impacts of wind power forecast errors on the real-time balancing need
T2 - A Nordic case study
AU - Miettinen, Jari
AU - Holttinen, Hannele
PY - 2019/2/4
Y1 - 2019/2/4
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=85060655280&partnerID=8YFLogxK
U2 - 10.1049/iet-rpg.2018.5234
DO - 10.1049/iet-rpg.2018.5234
M3 - Article
VL - 13
SP - 227
EP - 233
JO - IET Renewable Power Generation
JF - IET Renewable Power Generation
SN - 1752-1416
IS - 2
ER -