Abstract
In recent years wind power generation has developed tremendously and is growing up in Tohoku regions. On the other hand, because wind power output is influenced by natural phenomena, the fluctuation of wind power has come into question along with the increase of quantity of wind power connected to the power system. There are two issues, one is local area issue caused by the voltage fluctuation and protection, harmonics etc., another one is wide area issue caused by frequency fluctuation. The countermeasure of the former has become successful by a variety of guidelines, but the countermeasure of the latter has not been still realized. In general it's considered that wind power has smoothing effect caused by irregularity and asynchronizm, but the effect isn't still known clearly and in detail. So, in this paper, we report the analysis of the wind power fluctuation and a consideration of smoothing effect from the measuring data of the existing wind power site and the data of wind simulation.
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