Impacts of Large-Scale Solar and Wind Power Production on the Balance of the Swedish Power System

Widén Joakim
Department of Engineering Sciences, Uppsala University, Uppsala, Sweden

Magnus Åberg
Department of Engineering Sciences, Uppsala University, Uppsala, Sweden

Dag Henning
Optensys Energianalys AB, Linköping, Sweden

Ladda ner artikelhttp://dx.doi.org/10.3384/ecp11057851

Ingår i: World Renewable Energy Congress - Sweden; 8-13 May; 2011; Linköping; Sweden

Linköping Electronic Conference Proceedings 57:14, s. 851-858

Visa mer +

Publicerad: 2011-11-03

ISBN: 978-91-7393-070-3

ISSN: 1650-3686 (tryckt), 1650-3740 (online)


Higher targets for renewable energy and current trends in wind power and photovoltaics (PV) suggest that future power systems will include large amounts of renewable and variable power generation. Integration of large-scale variable power generation changes the balance and operation of power systems; including scheduling of conventional generation units; transmission and use of balancing power. In this paper the Swedish power system is studied with the energy system optimisation model MODEST in a number of scenarios involving different combinations of large-scale solar and wind power. The model includes a representation of the Swedish district-heating systems to determine the effects on combined heat and power (CHP) operation. It is found that when renewable power generation is added to the present system; utilisation of investments in CHP plants is reduced due to an increased electricity surplus that favours use of heat pumps for district heating. At high penetration levels of both solar and wind power; water is spilled from hydropower reserves.


Solar power; Wind power; Power system; Optimisation


[1] European Parliament; Directive 2009/28/EC; Apr. 23 2009.

[2] IEA Wind; IEA Wind Energy Annual Report 2009; 2010. Available online at: http://www.ieawind.org/AnnualReports_PDF/2009.html.

[3] German Solar Industry Association (BSW-Solar); Statistic data on the German photovoltaic industry; Jun. 2010. Available online at: http://www.solarwirtschaft.de/fileadmin/content_files/factsheet_pv_engl.pdf.

[4] European Parliament; Directive 2010/31/EU; May 19 2010.

[5] H. Holttinen; R. Hirvonen; Power system requirements for wind power; in Wind Power in Power Systems; T. Ackermann (ed.); John Wiley & Sons Ltd.; 2005; pp. 144-167. doi: 10.1002/0470012684.ch8.

[6] D. Henning; Optimisation of Local and National Energy Systems: Development and Use of the MODEST Model; PhD Thesis; Department of Mechanical Engineering; Linköping University; Sweden; 1999.

[7] J. Widén; System Studies and Simulations of Distributed Photovoltaics in Sweden; PhD Thesis; Department of Engineering Sciences; Uppsala University; Sweden; 2010.

[8] L. Söder; On limits for wind power generation; International Journal of Global Energy Issues 21; 2004; pp. 243-254. doi: 10.1504/IJGEI.2004.005769.

[9] J. Fenger (ed.); Impacts of Climate Change on Renewable Energy Sources: Their Role in the Nordic Energy System; Nord 2007:003; Nordic Council of Ministers; 2007.

Citeringar i Crossref