Enhancement of over current coordination for a distribution system connected to a microgrid using unidirectional fault current limiter

Saad M. Saad, Naser El Naily, Jamal Wafi, Abdelsalam El Haffar, Faisal A. Mohamed

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

The growth in integrating more distributed generation (DG) urged the step for modern distribution networks (DN) to operate in microgrids mode. However, integrating DG into DN, increase the short-circuit level, and consequently disorientate and disturbed the operation of protection schemes. However, utilizing of Unidirectional Fault Current Limiter (UFCL) is one of the numerous practical solutions used currently to mitigate the impact of DG on the microgrid protection schemes. Employment of UFCL at the point of connection of downstream network to the upstream network overcome DG influences on relays coordination and preserve the current coordination time interval (CTI) among different protective relays. Placement of UFCL at the tie node decreases the contribution of the upstream network to fault currents in the downstream network and not vice versa. This property decreases the complexity required to coordinate protective devices in presence of DG in the microgrid, and ensures preserving the existing schematic configuration of the protective devices. Due to that, improvement in the Performance of protective relays during various fault conditions. In this study, a 30 KV medium voltage DN was simulated in ETAP and the effectiveness of the proposed method for a number of potential scenarios in the network was verified.

Original languageEnglish
Title of host publication2018 9th International Renewable Energy Congress, IREC 2018
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1-6
Number of pages6
ISBN (Electronic)9781538609989
DOIs
Publication statusPublished - May 21 2018
Event9th International Renewable Energy Congress, IREC 2018 - Hammamet, Tunisia
Duration: Mar 20 2018Mar 22 2018

Other

Other9th International Renewable Energy Congress, IREC 2018
CountryTunisia
CityHammamet
Period3/20/183/22/18

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Keywords

  • Distributed power generation
  • Fault Current Limiter
  • Fault protection
  • Power distribution

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Renewable Energy, Sustainability and the Environment

Cite this

Saad, S. M., Naily, N. E., Wafi, J., El Haffar, A., & Mohamed, F. A. (2018). Enhancement of over current coordination for a distribution system connected to a microgrid using unidirectional fault current limiter. In 2018 9th International Renewable Energy Congress, IREC 2018 (pp. 1-6). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/IREC.2018.8362558