上游风电机组偏航控制对下游机组功率影响研究
Influence of Yaw Control of Upstream Wind Turbines on Power of Downstream
摘要:
目前风电机组偏航控制策略研究主要是集中在单台风力发电机组的最大功率追踪，没能考虑到尾流对下游风电机组功率的影响。因此本文主要围绕上游风电机组偏航状态下，其尾流中心偏移量进行系统的研究。根据现有的理论依据推到出尾流偏移量的简化计算公式，依据推公式在MATLAB中编程计算。得到尾流偏移量各参数之间的关系，并对参数之间的关系进行分析。随后在Bladed软件中建立风力发电机组模型，并利用得到的尾流中心偏移量，进行两台距离7倍风轮直径的风电机组在某一特定风向条件下，由上游风电机组主动偏航控制一定角度后，对两台机组功率的特性进行分析与总结。
Abstract:
At present, the research on the yaw control strategy of wind turbines is mainly focused on the maximum power tracing of a single wind turbine, which cannot take into account the influence of wake on the power of downstream wind turbines. Therefore, this paper mainly focuses on the study of the center deviation of the wake turbulence in the yaw state of the upstream wind turbine. According to the existing theoretical basis, the simplification formula of the wake displacement is deduced, and the formula is programmed in MATLAB. The relationship between the parameters of the wake displacement is obtained, and the relationship between the parameters is analyzed. Then the model of wind turbine was established in Bladed software and the two sets of wind turbine with 7 times wind wheel diameter were taken by the center deviation of the wake center. Under certain wind direction, the wind turbine was active yaw control. After a certain angle, the power characteristics of the two units were analyzed and summarized.
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