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Reliability assessment and improvement of digital protective relays

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Abstract

The development of digital protective relays is considered as a real revolution in the field of power system protection. This is due to their wonderful features not available with older relay generations such as: multifunction, compactness, communication…etc. However, many experts have expressed their anxieties about the reliability of this kind of relays. In this paper, an analytical approach allowing the reliability assessment of digital protective relay has been presented. First, the different failure modes (common cause failures) have been discussed. Then, reliability modeling and evaluation has been developed in order to identify the points of weakness in digital relays. Subsequently, the measures that may be taken to prevent CCFs and enhance the reliability has been proposed and analyzed.

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Notes

  1. ERPT (version 1.4 2014) software of calculation and simulation developed by the authors in the university of Boumerdes, Algeria.

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Authors and Affiliations

  1. Signals and Systems Laboratory, IGEE, UMBB University, Boumerdes, Algeria

    Abdelkader Abdelmoumene, Hamid Bentarzi, Mahfoud Chafai & Abderrahmane Ouadi

Authors
  1. Abdelkader Abdelmoumene
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  2. Hamid Bentarzi
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  3. Mahfoud Chafai
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  4. Abderrahmane Ouadi
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Correspondence to Abdelkader Abdelmoumene.

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Abdelmoumene, A., Bentarzi, H., Chafai, M. et al. Reliability assessment and improvement of digital protective relays. Int J Syst Assur Eng Manag 7 (Suppl 1), 62–69 (2016). https://doi.org/10.1007/s13198-014-0300-z

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  • DOI: https://doi.org/10.1007/s13198-014-0300-z

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