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Wind Power Potential in Interior Alaska from a Micrometeorological Perspective

机译:从微气象学角度看阿拉斯加内部的风电潜力

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The wind power potential in Interior Alaska is evaluated from a micrometeorological perspective. Based on the local balance equation of momentum and the equation of continuity we derive the local balance equation of kinetic energy for macroscopic and turbulent systems, and in a further step, Bernoulli’s equation and integral equations that customarily serve as the key equations in momentum theory and blade-element analysis, where the Lanchester-Betz-Joukowsky limit, Glauert’s optimum actuator disk, and the results of the blade-element analysis by Okulov and Sorensen are exemplarily illustrated. The wind power potential at three different sites in Interior Alaska (Delta Junction, Eva Creek, and Poker Flat) is assessed by considering the results of wind field predictions for the winter period from October 1, 2008, to April 1, 2009 provided by the Weather Research and Forecasting (WRF) model to avoid time-consuming and expensive tall-tower observations in Interior Alaska which is characterized by a relatively low degree of infrastructure outside of the city of Fairbanks. To predict the average power output we use the Weibull distributions derived from the predicted wind fields for these three different sites and the power curves of five different propeller-type wind turbines with rated powers ranging from 2 MW to 2.5 MW. These power curves are represented by general logistic functions. The predicted power capacity for the Eva Creek site is compared with that of the Eva Creek wind farm established in 2012. The results of our predictions for the winter period 2008/2009 are nearly 20 percent lower than those of the Eva Creek wind farm for the period from January to September 2013.
机译:从微气象学角度评估了阿拉斯加内陆地区的风力发电潜力。基于动量的局部平衡方程和连续性方程,我们导出了宏观和湍流系统动能的局部平衡方程,并在下一步中,习惯上将伯努利方程和积分方程用作动量理论中的关键方程和叶片元素分析,其中举例说明了Lanchester-Betz-Joukowsky极限,Glauert的最佳执行器盘以及Okulov和Sorensen进行的叶片元素分析结果。阿拉斯加内陆地区三个不同地点(三角洲交界处,伊娃溪和扑克滩)的风电潜力通过考虑2008年10月1日至2009年4月1日冬季的风场预测结果进行评估。气象研究和预报(WRF)模型可避免在阿拉斯加内陆进行耗时且昂贵的高层塔楼观测,该观测站的特征是费尔班克斯市外基础设施的程度相对较低。为了预测平均功率输出,我们使用从这三个不同地点的预测风场得出的威布尔分布以及额定功率为2 MW至2.5 MW的五种不同螺旋桨式风力发电机的功率曲线。这些功率曲线由一般逻辑函数表示。将Eva Creek站点的预计发电量与2012年建立的Eva Creek风力发电场进行了比较。我们对2008/2009年冬季的预测结果比Eva Creek风力发电场的预测结果低近20%。从2013年1月到2013年9月。

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