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Open AccessFeature PaperArticle

An Adaptive Frequency Strategy for Variable Speed Wind Turbines: Application to High Wind Integration Into Power Systems

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Department of Electrical Engineering, Universidad Politécnica de Cartagena, 30202 Cartagena, Spain
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Alberta Electric System Operator, Calgary, AB T2P 0L4, Canada
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Department of Civil Engineering, Universidad Politécnica de Cartagena, 30203 Cartagena, Spain
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Department of Electrical Engineering, Universidad Politécnica de Valencia, 46022 Valencia, Spain
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Author to whom correspondence should be addressed.
Energies 2018, 11(6), 1436; https://doi.org/10.3390/en11061436
Received: 10 May 2018 / Revised: 28 May 2018 / Accepted: 29 May 2018 / Published: 4 June 2018
(This article belongs to the Section Electrical Power and Energy System)
This paper presents a new frequency controller for variable speed wind turbines connected to the grid under power imbalance conditions. It is based on the fast power reserve emulation technique, having two different operation modes: overproduction and recovery mode. In the first mode, the active power provided by wind turbines is set over the mechanical power, reducing their rotational speed. This overproduction power is estimated according to the frequency excursion. In the second mode, the active power is established under the mechanical power to recover the initial rotational speed through a smooth trajectory. The power system considered for simulation purposes includes thermal, hydro-power and wind-power plants. The controller proposed has been evaluated under different mix-generation scenarios implemented in Matlab/Simulink. Extensive results and comparison to previous proposals are also included in the paper. View Full-Text
Keywords: frequency control; wind energy; renewable energy sources integration; power system stability frequency control; wind energy; renewable energy sources integration; power system stability
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Fernández-Guillamón, A.; Villena-Lapaz, J.; Vigueras-Rodríguez, A.; García-Sánchez, T.; Molina-García, Á. An Adaptive Frequency Strategy for Variable Speed Wind Turbines: Application to High Wind Integration Into Power Systems. Energies 2018, 11, 1436.

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