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Influence of distributed compensation on earth fault protection in cable distribution systems

Guldbrand, Anna LU and Samuelsson, Olof LU (2008) The 9th International Conference on Developments in Power System Protection (DPSP 2008) In Developments in Power System Protection, 2008. DPSP 2008. IET 9th International Conference on p.615-620
Abstract
The growing use of underground cables in distribution systems increases the capacitive coupling of the network to earth and as a consequence the capacitive earth fault current. In rural systems consisting of long cable feeders the extensive reactive current transportation gives rise to resistive losses that influence the earth fault protection. Simulations carried out in this work suggest the resistive losses disable sensitive earth fault protection in centrally compensated resonant earthed neutral systems unless unconventional low earth fault protection thresholds are applied. The introduction of distributed compensation will decrease the reactive current transportation and associated resistive losses. Distributed compensation will enable... (More)
The growing use of underground cables in distribution systems increases the capacitive coupling of the network to earth and as a consequence the capacitive earth fault current. In rural systems consisting of long cable feeders the extensive reactive current transportation gives rise to resistive losses that influence the earth fault protection. Simulations carried out in this work suggest the resistive losses disable sensitive earth fault protection in centrally compensated resonant earthed neutral systems unless unconventional low earth fault protection thresholds are applied. The introduction of distributed compensation will decrease the reactive current transportation and associated resistive losses. Distributed compensation will enable the use of sensitive earth fault protection using conventional protection thresholds. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
keywords
fault currents, underground cables, earthing, Power transmission lines and cables, Power system protection
in
Developments in Power System Protection, 2008. DPSP 2008. IET 9th International Conference on
pages
615 - 620
conference name
The 9th International Conference on Developments in Power System Protection (DPSP 2008)
external identifiers
  • Scopus:67449088917
ISBN
978-0-86341-902-7
language
English
LU publication?
yes
id
6486e752-374c-4699-bfd5-df9e8e7041d3 (old id 4357735)
alternative location
http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=4497057
date added to LUP
2014-03-14 10:58:55
date last changed
2017-01-01 08:15:55
@inproceedings{6486e752-374c-4699-bfd5-df9e8e7041d3,
  abstract     = {The growing use of underground cables in distribution systems increases the capacitive coupling of the network to earth and as a consequence the capacitive earth fault current. In rural systems consisting of long cable feeders the extensive reactive current transportation gives rise to resistive losses that influence the earth fault protection. Simulations carried out in this work suggest the resistive losses disable sensitive earth fault protection in centrally compensated resonant earthed neutral systems unless unconventional low earth fault protection thresholds are applied. The introduction of distributed compensation will decrease the reactive current transportation and associated resistive losses. Distributed compensation will enable the use of sensitive earth fault protection using conventional protection thresholds.},
  author       = {Guldbrand, Anna and Samuelsson, Olof},
  booktitle    = {Developments in Power System Protection, 2008. DPSP 2008. IET 9th International Conference on},
  isbn         = {978-0-86341-902-7},
  keyword      = {fault currents,underground cables,earthing,Power transmission lines and cables,Power system protection},
  language     = {eng},
  pages        = {615--620},
  title        = {Influence of distributed compensation on earth fault protection in cable distribution systems},
  year         = {2008},
}