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Memorias de investigación
Communications at congresses:
New selective earth faults only current directional method for isolated neutral systems
Year:2012
Research Areas
  • Electric engineering
Information
Abstract
In order to achieve total selectivity at electrical distribution networks it is of great importance to analyze the defect currents at ungrounded power systems. This information will help to grant selectivity at electrical distribution networks ensuring that only the defect line or feeder is removed from service. In the present work a new selective and directional protection method for ungrounded power systems is evaluated. The new method measures only defect currents to detect earth faults and works with a directional criterion to determine the line under faulty conditions. The main contribution of this new technique is that it can detect earth faults in outgoing lines at any type of substation avoiding the possible mismatch of traditional directional earth fault relays. This detection technique is based on the comparison of the direction of a reference current to the direction of all earth fault capacitive currents at all the feeders connected to the same bus bars. This new method has been validated through computer simulations. The results for the different cases studied are remarkable, proving total validity and usefulness of the new method.
International
Si
Congress
Environment and Electrical Engineering (EEEIC), 2012 11th International Conference on
960
Place
Venecia
Reviewers
Si
ISBN/ISSN
978-1-4577-1830-4
10.1109/EEEIC.2012.6221420
Start Date
18/05/2012
End Date
25/05/2012
From page
451
To page
455
Conference Publications of Environment and Electrical Engineering (EEEIC), 2012 11th International Conference
Participants
  • Autor: Carlos Antonio Platero Gaona (UPM)
  • Autor: Francisco Blánquez
  • Autor: Emilio REbollo
  • Autor: Ricardo Granizo Arrabe (UPM)
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Generación eléctrica con energía eólica
  • Departamento: Ingeniería Eléctrica
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