风转向对风力机性能的影响

Undarmaa Tumenbayar, K. Ko
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引用次数: 1

摘要

在韩国济州岛的一个风电场进行了一项调查,以确定风转向对风力涡轮机功率性能的影响。一台2兆瓦的风力涡轮机被用作测试涡轮机。一个80米高的met桅杆位于距离测试风力涡轮机220米的地方,地面激光雷达安装在met桅杆附近。将风转向工况分为上下旋翼转向(VV)、上下旋翼转向(VB)、上下旋翼倒转(BB)和上下旋翼倒转(BV)四种类型。在风电场中确定了四种类型的频率。从风向的日变化和风速的角度分析了风向的特征。并与无转向工况下的功率曲线进行了比较。同时,计算了功率输出的功率偏差系数(PDC),以识别四种类型对涡轮功率性能的影响。结果显示,VV、VB、BB和BV的出现频率分别为62.7%、4.9%、9.2%和23.1%。VV型和BV型的功率增益分别为3.0%和4.2%,而VB型和BB型的功率增益分别为- 2.9%和- 3.9%,意味着功率损失。
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An Effect of Wind Veer on Wind Turbine Performance
An investigation was performed to identify the wind veer impact on wind turbine power performance at a wind farm located on Jeju Island, South Korea. A 2 MW wind turbine was used as a test turbine. An 80 m-tall met mast was located 220 m away from the test wind turbine and a ground lidar was installed close to the met mast. The wind veer conditions were divided into four types: veering in upper and lower rotor (VV), veering in upper and backing in lower rotor (VB), backing in upper and lower rotor (BB) and backing in upper and veering in lower rotor (BV). The frequency of the four types was identified at the wind farm. The characteristics of wind veer was analysed in terms of diurnal variation and wind speed. In addition, the power curves of the four types were compared with that under no veer condition. Also, the power deviation coefficient (PDC) derived from the power outputs was calculated to identify the effect of the four types on the turbine power performance. As a result, the frequencies of the types, VV, VB, BB and BV were 62.7 %, 4.9 %, 9.2 % and 23.1 %, respectively. The PDCs for the types VV and BV were 3.0 % and 4.2 %, respectively, meaning a power gain while those for the types VB and BB were -2.9 % and -3.9 %, respectively, meaning a power loss.
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来源期刊
CiteScore
4.50
自引率
16.00%
发文量
83
审稿时长
8 weeks
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