Nondetection Zone Elimination and Detection Speed Improvement for DC Microgrids Islanding Detection With Adaptive Resonant Frequency

Shi, T; Xiang, X; Lei, J; Liu, B; Wang, F; Chen, M; Yang, H; Li, L; Li, W

Nondetection Zone Elimination and Detection Speed Improvement for DC Microgrids Islanding Detection With Adaptive Resonant Frequency

Shi, T Xiang, X Lei, J Liu, B Wang, F Chen, M Yang, H Li, L

Li, W

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Publisher:: IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Publication Type:: Journal Article
Citation:: IEEE Journal of Emerging and Selected Topics in Power Electronics, 2023, 11, (6), pp. 5750-5765
Issue Date:: 2023-12-01

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Field	Value	Language
dc.contributor.author	Shi, T
dc.contributor.author	Xiang, X
dc.contributor.author	Lei, J
dc.contributor.author	Liu, B
dc.contributor.author	Wang, F
dc.contributor.author	Chen, M
dc.contributor.author	Yang, H
dc.contributor.author	Li, L https://orcid.org/0000-0001-8485-2216
dc.contributor.author	Li, W
dc.date.accessioned	2024-04-22T04:17:02Z
dc.date.available	2024-04-22T04:17:02Z
dc.date.issued	2023-12-01
dc.identifier.citation	IEEE Journal of Emerging and Selected Topics in Power Electronics, 2023, 11, (6), pp. 5750-5765
dc.identifier.issn	2168-6777
dc.identifier.issn	2168-6785
dc.identifier.uri	http://hdl.handle.net/10453/178183
dc.description.abstract	Islanding detection based on current disturbance of selected frequency (CDSF) is gaining widespread acceptance in dc microgrids due to its high detecting accuracy and good power quality. However, the selected static disturbance frequency at a specific operating state causes the expansion of the nondetection zone (NDZ) and the decrease of the detection speed under different system power conditions. In this article, the sensitivity model of current perturbation is developed to intuitively reveal the mechanism of oscillation frequency shift and the occurrence of the NDZ. Then, the theoretical resonant frequency is derived to analyze the frequency shift range with the consideration of system power changing, which provides the NDZ boundaries accurately. Moreover, an islanding detection method (IDM) with the adaptive resonant frequency is proposed to provide zero NDZ and fast detection speed by dynamically selecting the most sensitive frequency in different power operating cases. Thus, the conflict between the NDZ and detection speed is effectively addressed. Finally, the effectiveness of the proposed IDM is validated by both the simulations and experimental results.
dc.language	English
dc.publisher	IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
dc.relation.ispartof	IEEE Journal of Emerging and Selected Topics in Power Electronics
dc.relation.isbasedon	10.1109/JESTPE.2023.3314055
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject	0906 Electrical and Electronic Engineering
dc.subject.classification	4008 Electrical engineering
dc.subject.classification	4009 Electronics, sensors and digital hardware
dc.title	Nondetection Zone Elimination and Detection Speed Improvement for DC Microgrids Islanding Detection With Adaptive Resonant Frequency
dc.type	Journal Article
utslib.citation.volume	11
utslib.for	0906 Electrical and Electronic Engineering
pubs.organisational-group	University of Technology Sydney
pubs.organisational-group	University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	University of Technology Sydney/Faculty of Engineering and Information Technology/School of Electrical and Data Engineering
utslib.copyright.status	closed_access	*
dc.date.updated	2024-04-22T04:16:59Z
pubs.issue	6
pubs.publication-status	Published
pubs.volume	11
utslib.citation.issue	6

Abstract:

Islanding detection based on current disturbance of selected frequency (CDSF) is gaining widespread acceptance in dc microgrids due to its high detecting accuracy and good power quality. However, the selected static disturbance frequency at a specific operating state causes the expansion of the nondetection zone (NDZ) and the decrease of the detection speed under different system power conditions. In this article, the sensitivity model of current perturbation is developed to intuitively reveal the mechanism of oscillation frequency shift and the occurrence of the NDZ. Then, the theoretical resonant frequency is derived to analyze the frequency shift range with the consideration of system power changing, which provides the NDZ boundaries accurately. Moreover, an islanding detection method (IDM) with the adaptive resonant frequency is proposed to provide zero NDZ and fast detection speed by dynamically selecting the most sensitive frequency in different power operating cases. Thus, the conflict between the NDZ and detection speed is effectively addressed. Finally, the effectiveness of the proposed IDM is validated by both the simulations and experimental results.

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http://hdl.handle.net/10453/178183