风力机尾流对风电机组排布的影响研究

风能作为新能源的领头军,近年来发展迅速。风能利用率的大小很大程度上取决于风电场的微观选址,风电场微观选址是一个非常复杂的问题,在进行微观选址时首先需要考虑的便是尾流影响。文章主要针对国内外比较成熟的尾流线性模型做了简单分析,借助MATLAB编程实现对尾流的数学模拟,进行相关分析,并将分析结果进行了比较研究,分析差异产生的原因。接着对尾流叠加区域内的风速进行推导。最后结合典型的风机排布,在平坦地形条件下,针对某风电场提供的测风数据,通过MATLAB编程计算各尾流模型下每台风电机组的尾流损失。并对计算结果进行比较分析,得出适合不同的风资源分布区域的风电机组排布。在实际工程建设中对风电场的微观选址有一定的指导意义。

Given that the utilization rate of wind energy depends largely on the micrositing of wind farm and the complexity of micrositing,the first factor which needs to be considered is the wake effects.In this paper,a simple analysis has made on the developed wake models at home and abroad.Using MATLAB programming has made the wake flow mathematical simulation and relevant analyzing practicable,based on which this paper compares the results of analysis and figures out the causes of the differences.Then the wind velocity of superposition area is derived.Finally,taking into account the typical arrangement of wind turbines and the flat terrain,with the specific statistics provided by the wind farm,MATLAB programming is used to calculate wake losses of each wind turbines under different wake models.The calculation results are compared and analyzed so that the arrangement of wind turbines suitable for various wind-resource sections is made.The paper has practical guiding significance on the micrositing of wind farm during the construction process.