Analysis and solutions of overcurrent protection issues in a microgrid

Ahmad Razani Haron, Azah Mohamed, Hussain Shareef, Hadi Zayandehroodi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

47 Citations (Scopus)

Abstract

Implementation of microgrid concept creates several issues to the existing protection scheme in the radial distribution network. Contribution of short-circuit current from the main grid and distributed generations result in variations of fault current levels inside the microgrid depending on the location and capacity of the distributed generators. The changes cause detrimental effect of sympathetic tripping, blinding of protection, relay over-reaching, relay under-reaching and loss of selectivity of the overcurrent protection scheme. Such issues must be managed carefully to ensure full benefit from microgrid adaptation. Analysis of the existing overcurrent protection schemes applied in a microgrid with distributed generations reveal the incapability of the system to adapt to the new challenges. Some solutions that could rationalize the protection challenges are also presented in this paper.

Original languageEnglish
Title of host publicationPECon 2012 - 2012 IEEE International Conference on Power and Energy
Pages644-649
Number of pages6
DOIs
Publication statusPublished - 2012
Externally publishedYes
Event2012 IEEE International Conference on Power and Energy, PECon 2012 - Kota Kinabalu, Malaysia
Duration: Dec 2 2012Dec 5 2012

Publication series

NamePECon 2012 - 2012 IEEE International Conference on Power and Energy

Conference

Conference2012 IEEE International Conference on Power and Energy, PECon 2012
Country/TerritoryMalaysia
CityKota Kinabalu
Period12/2/1212/5/12

Keywords

  • Coordination
  • Distributied Generations(DG)
  • Distribution Network
  • Microgrid
  • Overcurrent Relay
  • Protection Issues

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Fuel Technology

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