不同下垫面的近地层风切变月变化特征分析  

Analysis of Monthly Variation Characteristics of Surface Layer Wind Shear over Different Land Surfaces

作　　者：袁红亮 刘军涛[1] 陈彬 王炎 Yuan Hongliang;LIU Juntao;CHEN Bin;WANG Yan(PowerChina Northwest Engineering Corporation Limited,Xi'an 710065,China)

机构地区：[1]中国电建集团西北勘测设计研究院有限公司,西安710065

出　　处：《西北水电》2023年第1期80-83,共4页Northwest Hydropower

基　　金：国家重点研发计划(2022YFB4202100)。

摘　　要：为了研究下垫面对风切变的影响,以青海冷湖、甘肃干河口、陕西靖边、广西防城、重庆红椿、河南内黄、青海茶卡等7个地区的实际测风数据为例,分析了高原、山地、平原下垫面条件下的风切变月变化特征,结果表明:不同下垫面条件下的风切变均表现明显的季节变化,但特征各异。高原地区总体表现出秋冬季风切变较大,春夏季风切变较小的特点;广西与重庆山地地区9—12月表现出很小的风切变;平原地区春冬季风切变较大,最大值出现在11月份;夏秋季风切变较小,最小值出现在7月份;平原地区的风切变与地表农作物生长规律有关;山地的风切变要比高原的风切变小,平原的风切变最大。所用的测风塔数量有限,在反应普遍适应性方面可能存在一定的不足,但基本能反应高原、山地、平原下垫面条件下的风切变月变化特征,可为风能资源的利用提供参考。To study the effect of underlying surface on wind shear,taking the actual wind measurement data of Lenghu in Qinghai,Ganhekou in Gansu,Jingbian in Shaanxi,Fangcheng in Guangxi,Hongchun in Chongqing,Neihuang in Henan and Chaka in Qinghai as examples,the monthly variation characteristics of wind shear over the land surface conditions of plateau,mountain and plain are analyzed.The results show that:The wind shear over different land surfaces shows obvious seasonal variation,but the characteristics are different;the plateau region generally shows larger wind shear in autumn and winter,spring and summer have smaller wind shear;the mountainous areas of Guangxi and Chongqing show smaller wind shear from September to December;the wind shear in plain area in spring and winter is larger,and the maximum value appears in November;the wind shear in summer and autumn is smaller,and the minimum value appears in July;the wind shear in plain area is related to the growth law of surface crops;the wind shear in mountain area is smaller than that of plateau area,and the wind shear of plain is the largest.The number of meteorological masts used in this study is limited,and there may be some deficiencies in response to the general adaptability,but it can basically reflect the monthly variation characteristics of wind shear over the conditions of plateau,mountain and plain land surface.It is expected to provide reference for the utilization of wind energy resources through this study.

关 键 词：风切变 下垫面 风能资源 指数律 

分 类 号：TK89[动力工程及工程热物理—流体机械及工程]