复杂地形测风塔选取对估算年上网电量的影响

Influence of Anemometer Tower Selection on Estimating the Annual On-Grid Electricity in Complex Terrain

在开发利用复杂地形的风能资源时,测风塔位置的选择决定着风能资源评估中各项评估指标的精度和年上网电量估算的精度。通过对湖北某山区风电场5座测风塔数据进行组合,利用Meteodyn WT6.4软件进行风速模拟,然后估算风电场年上网电量,结果表明估算值的变化随着风电场内代表性测风塔数量的增加而减小。因此在风电场进行风能资源测量时,考虑到设立测风塔的经济成本,可设立2或3座代表性测风塔,宜设立在风电场的中部和主风向的下风向。

When developing and utilizing wind energy resources in complex terrain, the location selection of anemometer tower determines the accuracy of indicators in wind energy resource assessment and the accuracy of annual on-grid electricity estimation. Through data combination of 5 anemometer towers in a mountainous wind farm in Hubei Province and wind speed simulation with Meteodyn WT6.4, the annual on-grid electricity of the wind farm is estimated. The result shows that the estimated value decreases with the increase of representative anemometer towers in the wind farm. Therefore, when measuring the wind energy resources of a wind farm, two or three representative anemometer towers shall be set up considering the economic cost of setting up a anemometer tower and the anemometer shall be set in the center of the wind farm and the downwind of the prevailing wind direction.