Maintenance testing of numerical differential protection relay

  • Mohamed Bouchahdane
  • Nassim Soltani
  • Farouk Lamraoui
Original Article
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Abstract

This paper presents an analysis of the main operating conditions that may lead to inappropriate differential relay operation. The specific numerical differential relay is established in the SIEMENS laboratory of the “Institut de Formation en Electricité et Gaz (IFEG) Ain Mlila”. The procedures of setting and testing, in particular, the SIEMENS 7UT613 numerical relay are described. In this regard, several tests are applied to verify their characteristics then the setting parameters are calculated and loaded to the numerical relays, using the DIGSI 4.87. In addition to this, the relays secondary tests are conducted using the OMICRON CMC 356 of the OMICRON electronic GmbH Company where the results are used to verify the exact operating characteristics of their protection elements.

Keywords

Differential protection Numerical relay Testing Harmonic Inrush current 
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Copyright information

© The Society for Reliability Engineering, Quality and Operations Management (SREQOM), India and The Division of Operation and Maintenance, Lulea University of Technology, Sweden 2015

Authors and Affiliations

  • Mohamed Bouchahdane
    • 1
  • Nassim Soltani
    • 1
  • Farouk Lamraoui
    • 1
  1. 1.Institute of Electrical and Electronics EngineeringUniversity of BoumerdesBoumerdesAlgeria

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