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Assessment of wind energy potential for Tuvalu with accurate estimation of Weibull parameters

机译：对图瓦卢的风能潜力评估了威布尔参数的准确估计

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Wind resource assessments are carried out for two sites in Tuvalu: Funafuti and Nukufetau. The wind speeds at 34 and 20 m above ground level were recorded for approximately 12 months and analyzed. The averages of each site are computed as the overall, daily, monthly, annual, and seasonal averages. The overall average wind speeds for Funafuti and Nukufetau at 34 m above ground level were estimated to be 6.19 and 5.36 m/s, respectively. The turbulence intensities at the two sites were also analyzed. The turbulence intensity is also computed for windy and low-wind days. Wind shear analysis was carried out and correlated with temperature variation. Ten different methods: median and quartiles method, the empirical method of Lysen, the empirical method of Justus, the moments method, the least squares method, the maximum likelihood method, the modified maximum likelihood method, the energy pattern factor method, method of multi-objective moments, and the wind atlas analysis and application program method were used to find the Weibull parameters. From these methods, the best method is used to determine the wind power density for the site. The wind power density for Funafuti is 228.18 W/m(2)and for Nukufetau is 145.1 W/m(2). The site maps were digitized and with the WAsP software, five potential locations were selected for each site from the wind resource map. The annual energy production for the sites was computed using wind atlas analysis and application program to be 2921.34 and 1848.49 MWh. The payback periods of installing the turbines for each site are calculated by performing an economic analysis, which showed payback periods of between 3.13 and 4.21 years for Funafuti and between 4.83 to 6.72 years for Nukufetau.
机译：在图瓦卢的两个地点进行风资源评估：Funafuti和Nukufetau。在地面34和20米处的风速记录在地面约12个月并分析。每个站点的平均值都被计算为整体，每日，每月，年度和季节性平均值。在地面34米以上的Funafuti和Nukufetau的整体平均风速分别估计为6.19和5.36 m / s。还分析了两个位点的湍流强度。湍流强度也适用于刮风和低风日。进行风剪切分析并与温度变化相关。十种不同的方法：中值和四分位数方法，赖恩的经验方法，贾斯汀的经验方法，矩法，最小二乘法，最大似然法，改进的最大似然法，能量模式因子方法，多重方法，多重 - 采用矩，风地图集分析和应用程序方法用于找到Weibull参数。从这些方法中，使用最佳方法来确定现场的风力密度。 funafuti的风力密度为228.18 w / m（2），对于Nukufetau是145.1 w / m（2）。站点地图被数字化并使用WASP软件，为来自风资源地图的每个站点选择了五个潜在位置。使用Wind Atlas分析和应用程序计算了该网站的年能生产，以2921.34和1848.49 MWH。通过进行经济分析，计算安装每个站点的涡轮机的投资回收期，这些经济分析显示资金的3.13和4.21岁之间的投资回收期，为Nukufetau的4.83至6.72岁。

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