考虑大气稳定度的“沙戈荒”风电基地风资源评估  

Assessment of Wind Resources at the Gobi Desert Wind Farm Clusters with Consideration of Atmospheric Stability

作　　者：李建科 杨树林 宋学武 王强[2] 秦海明 罗坤[2] 张朴 樊建人[2] 宋笛 LI Jianke;YANG Shuin;SONG Xuewu;WANG Qiang;QIN Haiming;LUO Kun;ZHANG Pu;FAN Jianren;SONG Di(China Shipbuilding Offshore Wind Power Co.Ltd.,Chongqing 401121,China;College of Energy Engineering,Zhejiang University,Hangzhou 310027,China)

机构地区：[1]中船海装风电有限公司,重庆401121 [2]浙江大学能源工程学院,杭州310027

出　　处：《新能源进展》2024年第6期717-724,共8页Advances in New and Renewable Energy

基　　金：国家自然科学基金项目(52206281);浙江省自然科学基金项目(LY24E060002);中央高校基本科研业务费专项资金项目(226-2024-00017)。

摘　　要：“沙戈荒”风电基地昼夜温差大、易受大气稳定度影响、缺乏代表性测风数据,亟需开展“沙戈荒”风电基地的风资源特性评估。以正在建设的内蒙古阿拉善盟“沙戈荒”风电基地为研究对象,采用天气研究与预报模式进行数值模拟,并利用测风数据验证模型的准确性,重点探究大气稳定度的时空分布特征及其对风速的影响。研究表明,该地区的风速和风功率密度在11月至次年5月较高,主要受到西北季风影响,在寒潮过境后,风功率会出现急剧下降;中性大气状态在冬季占比最大,且中性条件下风速最大;相较于平坦地形,山地区域的强稳定和强不稳定大气状态占比显著下降,中性大气稳定状态占比显著增加,山地区域冬季的中性大气状态占比可达48.4%。本研究可为“沙戈荒”风电基地微观选址提供理论依据和技术支撑。The Gobi desert wind farm cluster is characterized by large diurnal temperature differences,susceptibility to atmospheric stability,and a lack of representative wind measurement data.It is urgent to assess the wind resource characteristics of the Gobi desert wind farm.This study focused on the wind farm in Inner Mongolia's Alxa League,which was under construction then.Weather research and forecasting models were utilized for numerical simulation.Wind measurement data was employed to validate the model's accuracy,emphasizing the spatial and temporal distribution characteristics of atmospheric stability and its impact on wind speed.The research indicates that wind speed and wind power density in the region are higher from November to May of the following year,particularly affected by the northwest monsoon,with a sharp decrease in wind power accompanying the passage of cold waves.The proportion of neutral atmospheric conditions peaks in winter,and wind speeds are optimal under neutral conditions.Compared to flat terrain,mountainous regions exhibit a significant decrease in the proportion of strongly stable and strongly unstable atmospheric states,with a corresponding increase in the proportion of neutral atmospheric stability.Specifically,the proportion of neutral atmospheric conditions in mountainous regions during winter can reach 48.4%,providing theoretical and technical support for the micro-site selection of the Gobi desert wind farm cluster.

关 键 词：“沙戈荒”风电基地 风资源评估 天气研究与预报模式 大气稳定度 

分 类 号：TK81[动力工程及工程热物理—流体机械及工程]