Estimation of Fluctuating Output in Wind Farm

Abstract

Recently, wind power generation has shown marked increase also in Japan. From a power system point of view, since a wind turbine is an intermittent generator with large output fluctuation, increase of wind turbines causes considerable concerns on their adverse effects on power quality such as frequency and voltage deviation. Because of this, we carried out the research which power output fluctuation characteristics of wind farm were estimated in detail. The most important subject of this research was to estimate precisely the wind velocity that it flows in to the wind turbine. Therefore, wind measurement, wind turbine operation measurement and wind tunnel experiments were done, and by analyzing those data we developed the method that the 3-D velocity of the wind that it flows in to each wind turbine inside wind farm was estimated. Specially, power output fluctuation characteristics in column wind were examined in detail.