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Aspects of travelling wave based protection philosophy for consideration in DC Grids of the future

  • Monday Ikhide
  • , Sarath Tennakoon
  • , Alison Griffiths
  • , Hengxu Ha

    Research output: Contribution to conferencePaperpeer-review

    Abstract

    Abstract—This paper presents a transient based protection
    principle utilising the magnitude of the travelling wave power
    derivative at only local terminal to formulate a non-unit
    protection scheme, where the directional transient relay and
    boundary relay have been involved. In terms of boundary relay,
    for an internal fault in the forward direction with respect to a
    local relay, the traveling wave power derivative will exceed a
    pre-determined setting, otherwise the fault is external to the
    relay, due to the discontinuity of surge impedance at the
    boundary point. Directional detection is achieved by the
    comparison of the forward travelling wave power to the
    backward travelling wave power. The ratio of forward traveling
    wave to backward traveling wave is less than unity for all
    forward directional faults and much greater than unity for
    reverse directional faults. Simulation studies carried out in
    PSCAD and the results presented shows the suitability of the
    proposed protection principle as all fault scenario indicated
    were detected within 250µs following the application of the
    faults.
    Original languageEnglish
    Number of pages6
    Publication statusAccepted/In press - 6 Sept 2019
    Event5th IEEE Southern Power Electronics Conference (IEEE SPEC’19) joint with 15th Brazilian Power Electronics Conference – (COBEP’19) - Santos, Brazil
    Duration: 1 Dec 20194 Dec 2019
    http://www.cobep-spec2019.org/

    Conference

    Conference5th IEEE Southern Power Electronics Conference (IEEE SPEC’19) joint with 15th Brazilian Power Electronics Conference – (COBEP’19)
    Abbreviated titleCOBEP 2019 SPEC
    Country/TerritoryBrazil
    CitySantos
    Period1/12/194/12/19
    Internet address

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    • BEST PAPER AWARD

      Ikhide, M. (Recipient), 4 Dec 2019

      Prize: Prize (including medals and awards)

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