Examination of wind turbine generator models response to disturbances

The paper discusses wind turbine generator (WTG) dynamic models intended for power system stability simulations. Presented are results of an examination performed for models of different variable-speed pitch-regulated WTGs. Subject to examination were models´ dynamic response to grid-side and wind-side disturbances and models´ sensitivity to parameter values. Discussed are phenomena observed in simulations and related concerns in regard to the quality of the models, with emphasis on questionable or non-physical behavior patterns. The paper underlines the need for more verification and validation activities and the necessity for industry organizations to participate in model testing to provide feedback to WTG manufacturers and model developers.