摘要
利用FLUENT软件对4台额定功率为1.2 MW的水平轴风力机分别在顺列和错列布置方式下及不同入流角情况下进行数值模拟,结合叶轮尾流理论分析转动叶片与塔架之间以及上游两机组间的尾流相互干扰对下游风力机输出功率的影响。结果表明:多机组风力机错列布置时上游风力机尾流对下游风力机功率的输出影响更小。在错列布置中,入流角为15°时上游风力机尾流对下游风力机的影响最小,同时下游风力机的输出功率较大,与其额定功率相比相对误差较小。合理的偏航角有利于下游风力机输出功率的提高,即提高整个风场效率。
The paper performs numerical simulation in the output power of the 1.2 MW of four horizontal-axis wind turbines, comparing the flow distribution difference between In-line arrangement and Staggered arrangement condition. Besides, it also contrasts the output power of the downstream wind turbine condition of the different inflow angle. By combining impeller wake theory analysis the effects of power output for downstream wind turbines between the upstream blade rotation and the tower and the interference between the two upstream units wake. The results showed that multi-unit wind turbine during operation under different layout and yawing angle conditions, upstream turbine wakes impact on different effects for downstream wind turbine of operating conditions and power, on the same operation conditions, On the same operation conditions, when inflow angle of the staggered arrangement is 15°, the upstream wind turbine wake effects on downstream of wind turbine little, so the downstream wind turbine output power is larger, compared to its rated power, the relative error is small. Therefore, in multi-unit arrangement of the entire wind farm , it is best to avoid to inline arrangement of multi-unit and adopt staggered arrangement of multi-unit rational yaw angle can increase output power of downstream wind turbine, and can increase the efficiency of overall wind farm.
出处
《太阳能学报》
EI
CAS
CSCD
北大核心
2016年第5期1133-1138,共6页
Acta Energiae Solaris Sinica
关键词
水平轴风力机
数值模拟
多机组阵列
输出功率
horizontal wind turbine
numerical simulation
multiple unit array
output power
