High speed differential protection for smart DC distribution systems

Research output: Contribution to journalArticle

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466 Downloads (Pure)

Abstract

This paper presents a high speed current differential implementation approach for smart dc distribution systems capable of sub-millisecond fault detection. The approach utilizes the natural characteristics of dc differential current measurements to significantly reduce fault detection times compared to standard applications and hence meet requirements for dc converter protection (around 2ms). Analysis is first developed to help quantify protection implementation challenges for a given dc system. Options for implementing the proposed technique are then illustrated. Results of scaled hardware testing are presented which validate the overall protection operating times in a low voltage environment. These results show the implementation approach can consistently achieve protection system operating within the order of a few microseconds.
Original languageEnglish
Pages (from-to)2610 - 2617
Number of pages8
JournalIEEE Transactions on Smart Grid
Volume5
Issue number5
Early online date9 May 2014
DOIs
Publication statusPublished - 8 Sep 2014

Fingerprint

Fault detection
Electric current measurement
Hardware
Testing
Electric potential

Keywords

  • power system protection
  • fault currents
  • dc power systems
  • microgrid
  • high speed
  • differential protection

Cite this

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abstract = "This paper presents a high speed current differential implementation approach for smart dc distribution systems capable of sub-millisecond fault detection. The approach utilizes the natural characteristics of dc differential current measurements to significantly reduce fault detection times compared to standard applications and hence meet requirements for dc converter protection (around 2ms). Analysis is first developed to help quantify protection implementation challenges for a given dc system. Options for implementing the proposed technique are then illustrated. Results of scaled hardware testing are presented which validate the overall protection operating times in a low voltage environment. These results show the implementation approach can consistently achieve protection system operating within the order of a few microseconds.",
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author = "Steven Fletcher and Patrick Norman and Fong, {Chung Man} and Stuart Galloway and Graeme Burt",
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High speed differential protection for smart DC distribution systems. / Fletcher, Steven; Norman, Patrick; Fong, Chung Man; Galloway, Stuart; Burt, Graeme.

In: IEEE Transactions on Smart Grid, Vol. 5, No. 5, 08.09.2014, p. 2610 - 2617.

Research output: Contribution to journalArticle

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