New selective earth faults only current directional method for isolated neutral systems

Granizo Arrabé, Ricardo and Blánquez, F.R. and Rebollo López, Emilio and Platero Gaona, Carlos Antonio (2012). New selective earth faults only current directional method for isolated neutral systems. In: "11th International Conference on Environment and Electrical Engineering (EEEIC)", 18/05/2012 - 25/05/2012, Venice, Italy. pp. 451-455. https://doi.org/10.1109/EEEIC.2012.6221420.

Description

Title: New selective earth faults only current directional method for isolated neutral systems
Author/s:
  • Granizo Arrabé, Ricardo
  • Blánquez, F.R.
  • Rebollo López, Emilio
  • Platero Gaona, Carlos Antonio
Item Type: Presentation at Congress or Conference (Article)
Event Title: 11th International Conference on Environment and Electrical Engineering (EEEIC)
Event Dates: 18/05/2012 - 25/05/2012
Event Location: Venice, Italy
Title of Book: 11th International Conference on Environment and Electrical Engineering (EEEIC)
Date: 2012
Subjects:
Faculty: E.T.S.I. Industriales (UPM)
Department: Ingeniería Eléctrica [hasta 2014]
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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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.

More information

Item ID: 20462
DC Identifier: http://oa.upm.es/20462/
OAI Identifier: oai:oa.upm.es:20462
DOI: 10.1109/EEEIC.2012.6221420
Deposited by: Memoria Investigacion
Deposited on: 25 Feb 2014 18:12
Last Modified: 18 Dec 2018 07:59
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