1WWEA.The highlights of the world wind energy report 2010 [EB/OL].http://www.wwindea.org/home/index.php.
2ABILDGAARD H.Experience of the Danish transmission system operator[EB/OL].http://www.iea.org/work/2007/grids/Abildgaard_ Energinet.pdf.
3DEA.Energy statistics 2009,figures[EB/OL].http://www.ens.dk/ en - US / Info / FactsAndFigures / Energy_statistics and indicators / Annual%20Statistics/Docmnents/Figures2009.xls.