Islanding Detection Method for Inverter-Based Distributed Generation by Injecting Second Order Harmonic Current

Byung-Moon Han




This paper proposes a new islanding detection scheme for the inverter-based distributed generator by injecting negligible amount of the 2nd order harmonic current. A proportional resonant controller was used for the output current control of the inverter, and a proportional resonant filter was used
for extracting the 2nd order harmonic voltage at the point of common coupling (PCC). The islanding state can be detected by measuring the magnitude ratio of the 2nd order harmonic voltage to the fundamental voltage when the 2nd order harmonic current with 0.8% magnitude is injected.

Published in: Renewable Energy & Power Quality Journal (RE&PQJ, Nº. 17)
Pages: 80-84 Date of Publication: 2019/07/15
ISSN: 2172-038X Date of Current Version:2019/04/10
REF: 226-19 Issue Date: July 2019
DOI:10.24084/repqj17.226 Publisher: EA4EPQ

Authors and affiliations

Byung-Moon Han
Dept. of Electrical Engineering. Myongji University. Yongin, Korea

Key words

Inverter-based distributed generation (DG), Islanding detection, 2nd order harmonic current injection, Proportional resonant (PR) controller, Proportional resonant filter


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