A Control-Oriented Dynamic Model for Wakes in Wind Plants
A Control-Oriented Dynamic Model for Wakes in Wind Plants
复制标题
风力发电厂尾流的面向控制的动态模型
DOI：
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发表时间：
2014
期刊：
影响因子：
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通讯作者：
J. van Wingerden
中科院分区：
文献类型：
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作者：
P. Gebraad;J. van Wingerden
在本文中，我们提出了一种新的控制导向模型预测风力发电厂的尾流效应，称为流量重定向和感应动力学（FLORIDYN）模型。该模型预测每个涡轮机处的尾流位置和有效流速，以及作为涡轮机的控制自由度（不同转子的轴向感应和偏航角）的函数的所产生的涡轮机电能产量。该模型是以前提出的静态模型（弗洛里斯）的扩展。它包括动态尾流传播效应，该效应导致控制设置变化和下游涡轮机响应之间的时间延迟。这些延迟与尾流中的大量空气从一个涡轮机行进到下一个涡轮机需要一些时间有关，并且延迟取决于尾流的空间和时间变化状态。扩展模型具有状态空间结构和非线性反馈项。虽然包括风力发电厂的控制相关动态，但它仍然具有相对少量的参数，并且模型的计算复杂度足够小，使得它具有用于控制参考信号的动态优化以改进风力发电厂控制的潜力。
In this paper, we present a novel control-oriented model for predicting wake effects in wind plants, called the FLOw Redirection and Induction Dynamics (FLORIDYN) model. The model predicts the wake locations and the effective flow velocities at each turbine, and the resulting turbine electrical energy productions, as a function of the control degrees of freedom of the turbines (the axial induction and the yaw angle of the different rotors). The model is an extension of a previously presented static model (FLORIS). It includes the dynamic wake propagation effects that cause time delays between control setting changes and the response of downstream turbines. These delays are associated with a mass of air in the wake taking some time to travel from one turbine to the next, and the delays are dependent on the spatially- and time-varying state of the wake. The extended model has a state-space structure combined with a nonlinear feedback term. While including the control-relevant dynamics of the wind plant, it still has a relatively small amount of parameters, and the computational complexity of the model is small enough such that it has the potential to be used for dynamic optimization of the control reference signals for improved wind plant control.