陕北典型风能特性分析

An Analysis of Typical Wind Energy Characteristics in Northern Shaanxi

该文分析了榆林靖边与定边2处风电场2019年测风塔观测数据,发现两地风速、风向分布具有较强局地性,靖边风电场年平均风速明显小于定边风电场年平均风速,靖边地区风速概率属于单峰分布,定边地区风速分布更加均匀,靖边风电场70 m平均风速呈现V字型分布,定边地区风速分布呈现浅U字型。靖边与定边均呈现出冬季平均风速大,夏季风速最小,风功率密度冬春季最大,夏秋季明显降低的分布特点,且两地70 m风功率密度与陕西年负荷在春、夏、秋3季均呈现较明显的反向分布。

In this paper,the observation data of Jingbian and Dingbian wind towers in Yulin is analyzed and it is found that the distribution of wind speed and direction in the two places had strong locality,and the annual average wind speed in Jingbian wind farms is significantly smaller than that in Dingbian wind farms,and the wind speed probability in Jingbian is of single-peaked distribution,while the wind speed distribution in Dingbian is more even.The average wind speed of 70 meters in Jingbian wind farms presents a V-shaped distribution,while that in Dingbian presents a shallow Ushaped distribution.In both Jingbian and Dingbian,the average wind speed is high in winter and the wind speed is minimum in summer,and the wind power density is maximum in winter and spring,and the wind power density decreases significantly in summer and autumn.Moreover,the 70-meter wind power density in Jingbian and Dingbian has an obvious reverse distribution with the annual load of Shaanxi in spring,summer and autumn.