1. Grid N. Connection conditions, grid code documents. 〈http://www.nationalgrid.com/uk〉; 2004.
2. Hydro-Electric S. Scottish power plc: guidance note for the connection of windfarms, Scottish Power T&D, Scottish Hydro-Electric; 2002.
3. EWEA. Large scale integration of wind energy in the European power supply: analysis, issues and recommendations. Technical Report, EWEA. [Online] Available: 〈http://www.ewea.org〉; December 2005.
4. FERC. Interconnection for wind energy, FERC. Docket No. 661, Final rule. [Online] Available: 〈http://www.ferc.gov〉.
5. Reactive power control of windfarms for voltage control applications;Tapia;Renewable Energy,2004