Real-time simulation of a Doubly-Fed Induction Generator based wind power system on eMEGASim® Digital Simulator

The growing demand for wind power integration into the generation mix comes with the need to subject these systems into even more stringent performance requirements. This study focused on Doubly-Fed Induction Generator (DFIG) based wind turbines due to their common adoption in industry. The model used here consists of a high voltage transmission system with four integrated wind farm models consisting of a total of 65 DFIG based wind turbines and it was developed on and tested on components of OPAL-RT´s eMEGASim^® Real- Time Digital Simulator. An average wind turbine model from Matlab´s SimpowerSystems blockset, and a detailed model based on OPAL-RT´s Artemis blockset were tested. The average model was found to be more stable than the detailed model under the given network conditions even though reactive power control was unstable for both models. This conclusion was made based on the fact that the real power output of the average model followed its power curve whilst that of the detailed model oscillated about the rated output power even with increasing wind speed.