An islanding detection technique for inverter-based distributed generation in microgrids

Mazaher Karimi, Mohammad Farshad, Qiteng Hong, Hannu Laaksonen, Kimmo Kauhaniemi

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)
3 Downloads (Pure)

Abstract

This article proposes a new passive islanding detection technique for inverter-based distributed generation (DG) in microgrids based on local synchrophasor measurements. The proposed method utilizes the voltage and current phasors measured at the DG connection point (point of connection, PoC). In this paper, the rate of change of voltages and the ratio of the voltage and current magnitudes (VoI index) at the PoC are monitored using micro phasor measurement units. The developed local measurements based decentralized islanding detection technique is based on the VoI index in order to detect any kind of utility grid frequency fluctuations or oscillations and distinguishing them from islanding condition. The simulation studies confirm that the proposed scheme is accurate, robust, fast, and simple to implement for inverter-based DGs.
Original languageEnglish
Article number130
Number of pages18
JournalEnergies
Volume14
Issue number1
DOIs
Publication statusPublished - 29 Dec 2020

Keywords

  • distributed generation
  • inverter-based generation
  • islanding detection
  • microgrid
  • non-detection zone
  • point of DG connection
  • VoI index

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