All-optical busbar differential protection scheme for electric power systems

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Abstract

This paper proposes a novel implementation of a differential protection scheme using magneto-optic current sensors. The proposed all-Optical Differential Protection (ODP) scheme utilizes inherent properties of magneto-optic sensors connected in series to perform differential protection functionality. In order to demonstrate the validity of the proposed scheme, all constituent components such as optical fibre, polarisers and Faraday rotators have been modelled using the Jones matrix representation. Through selected simulation-based case studies, including external and internal (high resistive and solid) faults, the paper demonstrates that the proposed novel ODP scheme for busbar protection meets the protection relaying performance criteria in terms of discrimination, sensitivity, stability, as well as ultra-high speed of operation.

Original languageEnglish
Title of host publication13th International Conference on Development in Power System Protection 2016 (DPSP), 2016
Place of PublicationStevenage, Hertfordshire
Number of pages6
Volume2016
EditionCP671
DOIs
Publication statusPublished - 22 Dec 2016
Event13th International Conference on Development in Power System Protection 2016, DPSP 2016 - Edinburgh, United Kingdom
Duration: 7 Mar 201610 Mar 2016

Conference

Conference13th International Conference on Development in Power System Protection 2016, DPSP 2016
CountryUnited Kingdom
CityEdinburgh
Period7/03/1610/03/16

Keywords

  • differential protection
  • Faraday rotator
  • Jones matrix formalisation
  • optical devices model
  • optical measurement

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