Detailed study of DFIG-based wind turbines to overcome the most severe grid faults
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Altres documents de l'autoria: Rolán Blanco, Alejandro; Pedra Durán, Joaquín; Córcoles López, Felipe
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comunitat-uji-handle2:10234/7034
comunitat-uji-handle3:10234/8619
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Detailed study of DFIG-based wind turbines to overcome the most severe grid faultsData de publicació
2014-11xmlui.dri2xhtml.METS-1.0.item-edition
PostprintEditor
ElsevierCita bibliogràfica
ROLÁN, Alejandro; PEDRA, Joaquín; CÓRCOLES, Felipe. Detailed study of DFIG-based wind turbines to overcome the most severe grid faults. International Journal of Electrical Power & Energy Systems, 2014, vol. 62, p. 868-878.Tipus de document
info:eu-repo/semantics/articleParaules clau / Matèries
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This paper studies the effects of voltage sags caused by faults on doubly-fed induction generators to overcome grid faults. A wide range of sag duration and depth values is considered. It is observed that sag duration ... [+]
This paper studies the effects of voltage sags caused by faults on doubly-fed induction generators to overcome grid faults. A wide range of sag duration and depth values is considered. It is observed that sag duration influence is periodical. Sag effects depend on duration and depth and on the fault-clearing process as well. Two approaches of the model are compared: the most accurate approach, discrete sag, considers that the fault is cleared in the successive natural fault-current zeros of affected phases, leading to a voltage recovery in several steps; the least accurate approach, abrupt sag, considers that the fault is cleared instantaneously in all affected phases, leading to a one-step voltage recovery. Comparison between both sag models reveals that the fault-clearing process smoothes sag effects. The study assumes that the rotor-side converter can keep constant the transformed rotor current in the synchronous reference frame, thus providing insights into wind turbine fault ride-through capability. The voltage limit of the rotor-side converter is considered to show the situations where the rotor current can be controlled. Finally, a table and a 3D figure summarizing the effects of the most severe grid faults on the rotor-side converter to overcome the most severe faults are provided. [-]
Publicat a
International Journal of Electrical Power & Energy Systems Volume 62, November 2014Drets d'accés
Copyright © 2014 Elsevier Ltd. All rights reserved.
info:eu-repo/semantics/openAccess
info:eu-repo/semantics/openAccess
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