河西走廊東部風能資源分布特征及開發利用
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甘肅省氣象局2007年重點科研項目“數值預報產品在河西精細化預報中的應用”資助


Distribution Characteristics and Utilization of Wind Energy Resources in Eastern Hexi Corridor
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    摘要:

    利用河西走廊東部5站1971~2004年逐日4次定時地面氣象觀測資料和2005~2006年地面自動氣象觀測站逐小時氣象觀測資料,用統計學方法分析了該區域近地面風速及風能的演變和分布。結果表明:河西走廊東部環境風速的氣候變化比較穩定,但探測環境變化較大的站點風速下降十分明顯;風能分布具有山區最大、沿河西走廊峽管和荒漠地帶次之、中部武威綠洲盆地最小的地域分布特點;南部山區年平均風速均大于等于3.5 m·s-1、全年各月平均風速均大于等于3.0 m·s-1,且全年風向、風速躍變小,日平均有效風能時數大于等于13.9 h,年平均有效風能時數大于等于5000 h,因此具有較大的風能開發利用價值;北部荒漠和沙漠地區年平均風速為2.7 m·s-1,一年中3~7月風速較大,日平均有效風能時數為8.7 h,年平均有效風能時數為2913 h,年平均有效風能密度為82.7 W·m-2,具有季節性風能開發利用價值;位于綠洲盆地的涼州區由于各項風能參數均較小,不適宜進行風力發電。根據河西走廊東部地域和氣候特點,分析了風能開發利用前景。

    Abstract:

    By means of the conventional weather observation data from 5 stations from 1971 to 2004 and the data from ground automatic weather stations from 2005 to 2006 in the eastern Hexi corridor, the evolution and distribution of nearsurface wind speed and wind energy are analyzed by the statistical method. The results show that the change of the environmental wind speed was quite stable, but the wind speed decreased obviously where the environmental variation was bigger. The regional distribution characteristics of wind energy are that the wind energy was the biggest in the mountainous areas, the second along the Hexi corridor in the desert belt, and the smallest in the Wuwei oasis basin. The annual mean wind speed is greater than 3.5 m/s, and the mean wind speeds of all months are greater than 3.0 m/s. The jumping of both wind direction and wind speed is unobvious in whole year. The daily mean number of effective wind energy hours is greater than 13.9, and the annual mean number of effective wind energy hours is greater than 5000 hours in the southern mountainous area, where there is great potential for the development of wind resources. The annual mean wind speed is only 2.7 m/s, bigger from march to July, with the daily mean number of effective wind energy hours being 8.7 hours, the annual mean number of effective wind energy hours being 2913 hours, and the annual mean effective wind energy density being 82.7 W/m2  over the northern desert areas, where the wind energy can be utilized seasonally. The various wind energy parameters are smaller in the Liangzhou oasis basin, where wind power generation, therefore, is not suitable. The utilization prospects of wind energy are analyzed according to the regional climate characteristics of wind power generation.

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錢莉,楊永龍,楊曉玲,李慶玉.河西走廊東部風能資源分布特征及開發利用[J].氣象科技,2009,37(2):198~204

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  • 收稿日期:2007-12-04
  • 定稿日期:2008-11-17
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