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Wind Energy Science The interactive open-access journal of the European Academy of Wind Energy
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https://doi.org/10.5194/wes-2019-103
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/wes-2019-103
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

  07 Feb 2020

07 Feb 2020

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A revised version of this preprint is currently under review for the journal WES.

Evaluation of the impact of wind farm control techniques on fatigue and ultimate loads

Alessandro Croce, Stefano Cacciola, Luca Sartori, and Paride De Fidelibus Alessandro Croce et al.
  • Department of Aerospace Science and Technology, Politecnico di Milano, Milano, Italy

Abstract. Wind farm control is one of the solutions recently proposed to increase the overall energy production of a wind power plant.

A generic wind farm control is typically synthesized so as to optimize the energy production of the entire wind farm by reducing the detrimental effects due to wake-turbine interactions. As a matter of fact, the performance of a farm control is typically measured by looking mainly at the increase of produced power, possibly weighted with the wind Weibull and rose at a specific place, and, sometimes, by looking also at the fatigue loads. However, an aspect which is rather overlooked is the evaluation of the impact that a farm control law has on the maximum loads and on the dynamic responses under extreme conditions of the individual wind turbine.

In this work, two promising wind farm controls, based respectively on Wake Redirection (WR) and Dynamic Induction Control (DIC) strategy, are evaluated at a single wind turbine level. To do so, a two-pronged analysis is performed. Firstly, the control techniques are evaluated in terms of the related impact on some specific key performance indicators (e.g. fatigue and ultimate loads, actuator duty cycle and annual energy production). Secondarily, an optimal blade redesign process, which takes into account the presence of the wind farm control, is performed with the goal of quantifying the possible modification in the structure of the blade and hence of quantifying the impact of the control on the Cost of Energy model.

Alessandro Croce et al.

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Alessandro Croce et al.

Alessandro Croce et al.

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Latest update: 13 Aug 2020
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Short summary
In recent years, research has focused on the development of wind farm controllers with the aim of minimizing interactions between machines and thus improving the production of the wind farm. In this work we have analyzed what are the effects of these recently technologies on the single wind turbine, with the aim of understanding the impact of these controllers on the design of the machine itself. The analyses have showed there are non-negligible effects on some components of the wind turbine.
In recent years, research has focused on the development of wind farm controllers with the aim...
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