Evaluating the Stability Impact of the Interconnecting Tie-Line between Coupled Neighboring Microgrids

Farhad Shahnia, Julius Susanto, Md Apel Mahmud

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Citation (Scopus)

Abstract

Even though microgrids are generally assumed to operate either in grid-connected or islanded modes, as a third alternative, neighboring microgrids may couple together provisionally to exchange power. This is helpful for the remote area microgrids when one of these experiences excessive loading or renewable-based generation or during faults in a section of one microgrid (MG) while no utility feeders exist. Such microgrids may also couple temporarily to lessen the overall electricity generation cost or to improve the overall reliability. To facilitate this connection, the neighboring microgrids should have an interlinking line. This paper analyzes the impact of such an interlinking line on the overall stability of those microgrids, and proposes a suitable interconnection, which can improve the stability of the system of coupled microgrids. To this end, first, a small signal stability model of the system is developed. Numerical analyses, realized in MATLAB, are performed for the interconnection of a few sample microgrids, based on which the general recommendations are derived for improving the stability of such systems.

Original languageEnglish
Title of host publicationProceedings of 2018 IEEE International Conference on Power Electronics, Drives and Energy Systems, PEDES 2018
Place of PublicationPiscataway, NJ
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781538693155
DOIs
Publication statusPublished - 21 Dec 2018
Externally publishedYes
Event8th IEEE International Conference on Power Electronics, Drives and Energy Systems, PEDES 2018 - Chennai, India
Duration: 18 Dec 201821 Dec 2018

Publication series

NameProceedings of 2018 IEEE International Conference on Power Electronics, Drives and Energy Systems, PEDES 2018

Conference

Conference8th IEEE International Conference on Power Electronics, Drives and Energy Systems, PEDES 2018
Country/TerritoryIndia
CityChennai
Period18/12/1821/12/18

Keywords

  • Coupled microgrids
  • Interconnecting tie-lines
  • Small signal stability analysis

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