基于Labview的虚拟风场算法的研究

Study of the algorithm for the virtual wind field based on Labview

在风力发电模拟系统中,风场模拟是一个关键环节,虽然通常认为风场符合Weibull分布,但它并不能很好的反映实际风场;后来提出了四参数混合模型,该模型弥补了Weibull分布的缺点,但其参数的估计计算相当繁琐;针对实验室模拟风场,该文提出了一种计算简便的风速数学模型,该模型将自然风速分为基本风速、阵风、缓慢变化风速和噪声风速4部分组成,而每个部分计算较为简便,并通过LabVIEW语言实现了对风场的模拟,模拟结果较为理想。

Wind speed imitation is a crucial portion in the wind power generation imitation system. Weibull distribution can not reflect factual wind speed regulation very well. The four-parameter mix model is better than Weibull distribution, but it is not fit for laboratory systems because in the model, parameters estimation is eonsiderablely complicated. In this paper,a wind speed mathematic model is proposed by which wind speed can be calculated easily. The proposed wind speed mathematic model is composed of the basic wind speed model, the gust wind speed model, the ramp wind speed model and the noisy wind speed model. Based on Labview, the wind power generation imitation scheme proposed in this paper is implemented effectively and the result is satisfactory.