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Energies 2017, 10(7), 1046; https://doi.org/10.3390/en10071046

Optimal Power Transmission of Offshore Wind Power Using a VSC-HVdc Interconnection

Electrical Engineering Department, Carlos III University of Madrid, Av. de la Universidad 30, 28911 Leganés, Madrid, Spain
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Author to whom correspondence should be addressed.
Academic Editor: Marco Mussetta
Received: 4 April 2017 / Revised: 6 July 2017 / Accepted: 17 July 2017 / Published: 20 July 2017
(This article belongs to the Special Issue Wind Generators Modelling and Control)
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Abstract

High-voltage dc transmission based on voltage-source converter (VSC-HVdc) is quickly increasing its power rating, and it can be the most appropriate link for the connection of offshore wind farms (OWFs) to the grid in many locations. This paper presents a steady-state operation model to calculate the optimal power transmission of an OWF connected to the grid through a VSC-HVdc link. The wind turbines are based on doubly fed induction generators (DFIGs), and a detailed model of the internal OWF grid is considered in the model. The objective of the optimization problem is to maximize the active power output of the OWF, i.e., the reduction of losses, by considering the optimal reactive power allocation while taking into account the restrictions imposed by the available wind power, the reactive power capability of the DFIG, the DC link model, and the operating conditions. Realistic simulations are performed to evaluate the proposed model and to execute optimal operation analyses. The results show the effectiveness of the proposed method and demonstrate the advantages of using the reactive control performed by DFIG to achieve the optimal operation of the VSC-HVdc. View Full-Text
Keywords: (doubly fed induction generator) DFIG; wind energy; high-voltageDC (HVdc); optimization methods; voltage source converter (doubly fed induction generator) DFIG; wind energy; high-voltageDC (HVdc); optimization methods; voltage source converter
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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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Montilla-DJesus, M.E.; Arnaltes, S.; Castronuovo, E.D.; Santos-Martin, D. Optimal Power Transmission of Offshore Wind Power Using a VSC-HVdc Interconnection. Energies 2017, 10, 1046.

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