There are many influencing factors of wind power unit such as wind velocity, confused flowing, tower-shadow effect and so on, which will bring fluctuation of wind turbine output.

风电机组发电出力的影响因素有很多，如风速、紊流、风机塔影效应等，这些因素的随机变化都会引起风机出力的波动。

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The trend of wind power generation is to improve the economic performance of the unit, to improve the level and efficiency of single generation capacity, reduce unit costs and generating costs.

风力发电的趋势是进步机组的经济性，进步单机的发电容量等级和效率，降低单位造价及发电本钱。

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In our country, poor weather conditions are important factor in the design of wind power generating unit.

在我国，恶劣的气候条件是风力发电机组设计考虑的重要因素。

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