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Energies 2014, 7(11), 7694-7716; doi:10.3390/en7117694

High Performance Reduced Order Models for Wind Turbines with Full-Scale Converters Applied on Grid Interconnection Studies

1
Department of Electrical Engineering, Federal University of Viçosa, Av. P. H. Rolfs, s/n, Viçosa 36570-900, Brazil
2
Department of Materials Engineering, Federal Center for Technological Education of Minas Gerais, Av. Amazonas 5253, Belo Horizonte 30421-169, Brazil
3
Graduate Program in Electrical Engineering, Federal University of Minas Gerais, Av. Antônio Carlos 6627, Belo Horizonte 31270-901, Brazil
4
Department of Energy Technology, Aalborg University, Pontoppidanstræde 101, Aalborg 9220, Denmark
*
Author to whom correspondence should be addressed.
Received: 31 July 2014 / Revised: 31 October 2014 / Accepted: 4 November 2014 / Published: 20 November 2014
(This article belongs to the Special Issue Wind Turbines 2014)
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Abstract

Wind power has achieved technological evolution, and Grid Code (GC) requirements forced wind industry consolidation in the last three decades. However, more studies are necessary to understand how the dynamics inherent in this energy source interact with the power system. Traditional energy production usually contains few high power unit generators; however, Wind Power Plants (WPPs) consist of dozens or hundreds of low-power units. Time domain simulations of WPPs may take too much time if detailed models are considered in such studies. This work discusses reduced order models used in interconnection studies of synchronous machines with full converter technology. The performance of all models is evaluated based on time domain simulations in the Simulink/MATLAB environment. A detailed model is described, and four reduced order models are compared using the performance index, Normalized Integral of Absolute Error (NIAE). Models are analyzed during wind speed variations and balanced voltage dip. During faults, WPPs must be able to supply reactive power to the grid, and this characteristic is analyzed. Using the proposed performance index, it is possible to conclude if a reduced order model is suitable to represent the WPPs dynamics on grid studies. View Full-Text
Keywords: wind turbine models; full-scale converters; reduced order models; performance index; time domain simulations; grid interconnection studies wind turbine models; full-scale converters; reduced order models; performance index; time domain simulations; grid interconnection studies
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Pereira, H.A.; Cupertino, A.F.; Teodorescu, R.; Silva, S.R. High Performance Reduced Order Models for Wind Turbines with Full-Scale Converters Applied on Grid Interconnection Studies. Energies 2014, 7, 7694-7716.

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