CAJ | 학술논문

为了给河西走廊风电场建设提供科学依据，利用河西走廊14座风能观测塔2009年9月至2010年8月的资料，分析了大风日低空垂直切变和湍流的演变和分布。结果表明：大风日风速垂直切变指数年平均在0．092～0．158之间，较国标有些偏低；10～30 m、10～50 m和10～70 m的大风日风速垂直切变指数比非大风日偏小；低层风速垂直切变大，高层风速垂直切变小；大风日10 m、30 m、50 m和100 m 4层的年平均湍流强度为0．11，比非大风日偏小一半左右；在大风日，随风速增大，风速不均一性减小，风向趋于稳定。
위료급하서주랑풍전장건설제공과학의거，이용하서주랑14좌풍능관측탑2009년9월지2010년8월적자료，분석료대풍일저공수직절변화단류적연변화분포。결과표명：대풍일풍속수직절변지수년평균재0．092～0．158지간，교국표유사편저；10～30 m、10～50 m화10～70 m적대풍일풍속수직절변지수비비대풍일편소；저층풍속수직절변대，고층풍속수직절변소；대풍일10 m、30 m、50 m화100 m 4층적년평균단류강도위0．11，비비대풍일편소일반좌우；재대풍일，수풍속증대，풍속불균일성감소，풍향추우은정。
In order to provide the scientific basis for wind power plants construction of Hexi Corridor,the distribution and evolution of the vertical shears and turbulences of low-level in gale days were analyzed by using the wind speed data from 14 observation towers from September 2009 to August 2010. The results showed that annual mean vertical shear indexes of wind speed in gale days during 2009-2010 were from 0. 092 to 0. 158 in Hexi Corridor,which was less than that of the national standard with 0. 143. The vertical shear indexes of low-level wind speed over the heights of 10-30,10-50 and 10-70 meters in gale days were smaller than those in non-gale days. The vertical shear of low-level wind speed was big,while that of the upper-level wind speed was small. The annual mean turbulence intensity over 10,30,50 and 100 meters was 0. 11 during 2009-2010 in gale days,and was about half in non-gale days. Furthermore,the non-uniformity of wind speed reduced as the wind speed increased in gale days,and the wind directions ten-ded to steady.