1. 1 Author Gillie Country UK Session 4 – Block a Barcelona 12-15 May 2003 'Virtual' Power Plant  Gas turbine used regulate power and voltage at point J.  Voltage support allows wind farm to remain connected during a fault. ● Regulated voltage and power could allow increased penetration of wind power into grid. ● Gas turbine and wind farm do not have to be located in same place. -could offer support to offshore wind farms.

2. 1 Author Gillie Country UK Session 4 – Block a Barcelona 12-15 May 2003 Model ● Model uses dq axis reference frame. ● Wind farm model stastistically scaled version of validated single wind turbine model. ● 3-phase line to earth fault modeled between point J and the grid. Results Normal operating conditions - Voltage regulated to ± 2.5% - Real power regulated to ± 5% Fault conditions - Wind farm remains connected.

3. 1 Author Gillie Country UK Session 4 – Block a Barcelona 12-15 May 2003

4. 1 Author Gillie Country UK Session 4 – Block a Barcelona 12-15 May 2003