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Estimation of zero-sequence impedance of undergrounds cables for single-phase fault location in distribution systems with electric arc

This paper focus on the problem of locating single-phase faults in mixed distribution electric systems, with overhead lines and underground cables, using voltage and current measurements at the sending-end and sequence model of the network. Since calculating series impedance for underground cables is not as simple as in the case of overhead lines, the paper proposes a methodology to obtain an estimation of zero-sequence impedance of underground cables starting from previous single-faults occurred in the system, in which an electric arc occurred at the fault location. For this reason, the signal is previously pretreated to eliminate its peaks voltage and the analysis can be done working with a signal as close as a sinus wave as possible

© 10th International Conference on Electrical Power Quality and Utilisation : 2009 : EPQU 2009, 2009, p. 1-4

IEEE

Author: Herraiz Jaramillo, Sergio
Meléndez i Frigola, Joaquim
Barrera Núñez, Víctor Augusto
Sánchez, Jorge
Castro, M.
Date: 2009
Abstract: This paper focus on the problem of locating single-phase faults in mixed distribution electric systems, with overhead lines and underground cables, using voltage and current measurements at the sending-end and sequence model of the network. Since calculating series impedance for underground cables is not as simple as in the case of overhead lines, the paper proposes a methodology to obtain an estimation of zero-sequence impedance of underground cables starting from previous single-faults occurred in the system, in which an electric arc occurred at the fault location. For this reason, the signal is previously pretreated to eliminate its peaks voltage and the analysis can be done working with a signal as close as a sinus wave as possible
Format: application/pdf
Citation: Herraiz, S., Meléndez, J., Barrera, V.A., Sánchez, J., i Castro, M. (2009). Estimation of zero-sequence impedance of undergrounds cables for single-phase fault location in distribution systems with electric arc. 10th International Conference on Electrical Power Quality and Utilisation : 2009 : EPQU 2009, 1-4. Recuperat 14 juny 2010, a http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=5318816
ISSN: 2150-6655
Document access: http://hdl.handle.net/10256/2594
Language: eng
Publisher: IEEE
Collection: Articles publicats (D-EEEiA)
Is part of: © 10th International Conference on Electrical Power Quality and Utilisation : 2009 : EPQU 2009, 2009, p. 1-4
Rights: Tots els drets reservats
Subject: Corrents elèctrics
Energia elèctrica -- Distribució -- Alta tensió
Errors de sistemes (Enginyeria) -- Localització
Impedància (Electricitat)
Electric currents
Electric power distribution -- High tension
Impedance (Electricity)
System failures (Engineering) -- Location
Title: Estimation of zero-sequence impedance of undergrounds cables for single-phase fault location in distribution systems with electric arc
Type: info:eu-repo/semantics/article
Repository: DUGiDocs

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