河西走廊风速变化及风能资源研究  

Changes of Wind Speed and Wind Energy over Gansu Corridor

作　　者：王毅荣[1] 张存杰 

机构地区：[1]中国气象局北京城市气象研究所 [2]兰州区域气候中心,甘肃兰州730020

出　　处：《高原气象》2006年第6期1196-1202,共7页Plateau Meteorology

基　　金：北京城市气象科学研究基金项目(UMRF200505);国家科技攻关计划项目(2004BA901A16);兰州区域气象中心开放实验室项目共同资助

摘　　要：利用河西走廊地区25年风速气候资料和风塔周年资料，研究了该区域近地面风速及风能的演变和分布。结果表明：河西走廊绿洲内风速下降十分明显，而其它高山站风速比较稳定，没有明显的减少趋势；风速变化具有周期振荡特点；垂直风速差由近地面向上减小，高层风速极大（小）值滞后于低层；风速随高度按自然对数规律增大，风能距地面8m层内随高度变化迅速；该地区4～12m／s风居多，是风能的主要贡献者；2～4月风速最大，1，5月最小；该地区风能丰富，10～70m层内年风能储量在2200khW／m^2以上。Using the climatic data of wind speed at 19 stations in Hexi corridor during 1970-2002 and the intensive data of 10 min interval from 7 wind-towers in Gobi in 2004-2005, the wind speed of surface layer and evolution and distribution of wind energy in this region are studied. The result shows that the descendenting about wind speed in oasios of Hexi corridor is obvious, but itis stable in other areas in where its descenting trend is no obvious. The wind speed change exists periodic oscillation characteristic, and the vertical wind speed difference is to decrease from high to low near surface layer. The maximum or minimum wind speed values in high layer lag behind low layer. In while year, the maximum wind speed occurred from February to April, and the minimum one, in January and May. The wind speed with height according to the rules of natural logarithm increase, The wind energy rapidly change with height near the 8 m levels of surface. The most of wind speed in Hexi corridor area is 4～12 m/s, which is main wind energy contributor. The resource of wind is very plenty in Hexi corridor that amount to 2200 khW/m^2 and over in 10～70 m layers near surface.

关 键 词：河西走廊 风速 风能 

分 类 号：TK81[动力工程及工程热物理—流体机械及工程]