Adaptive Overcurrent Relay Protection Strategy for Demand-side in Offshore DC Microgrids

Sheina, A; Zamora, R; Oo, AMT; Gunawardane, K

Adaptive Overcurrent Relay Protection Strategy for Demand-side in Offshore DC Microgrids

Sheina, A Zamora, R Oo, AMT Gunawardane, K

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Publisher:: IEEE
Publication Type:: Conference Proceeding
Citation:: 2024 IEEE 34th Australasian Universities Power Engineering Conference (AUPEC), 2024, 00, pp. 1-6
Issue Date:: 2024-12-25

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Field	Value	Language
dc.contributor.author	Sheina, A
dc.contributor.author	Zamora, R
dc.contributor.author	Oo, AMT
dc.contributor.author	Gunawardane, K https://orcid.org/0000-0001-5254-0162
dc.date	2024-11-20
dc.date.accessioned	2025-02-27T18:50:38Z
dc.date.available	2025-02-27T18:50:38Z
dc.date.issued	2024-12-25
dc.identifier.citation	2024 IEEE 34th Australasian Universities Power Engineering Conference (AUPEC), 2024, 00, pp. 1-6
dc.identifier.isbn	979-8-3503-7795-8
dc.identifier.issn	2474-1493
dc.identifier.uri	http://hdl.handle.net/10453/185396
dc.description.abstract	The integration of renewable energy sources such as solar wind waves and tidal energy by utilizing microgrids is becoming increasingly popular For offshore applications that operate in an islanded mode DC microgrids are preferred over AC microgrids due to their ease of the integration of energy storage systems ESS and renewable energy sources RES DC microgrids mitigate challenges faced by AC microgrids such as voltage imbalance harmonic currents and frequency deviations However DC microgrids face unique challenges particularly in protection systems due to a lack of standards limited research and insufficient expertise Current protection strategies need modification to adapt to the integration of multiple renewable energy sources ESS and various loads This paper proposes an adaptive approach utilizing rule based algorithm for DC microgrid protection systems to govern the overcurrent protection setting Hence the DC microgrids can dynamically adjust overcurrent settings in response to the change of load conditions ensuring reliable fault detection and system stability in the presence of various operating scenarios First the protection system of the DC microgrid is modelled and current for several schemes of demand are monitored Then the protection system is controlled by coordinating the current time curve of the overcurrent relay setting This can be achieved by controlling the pick up current the time multiplier settings TMS and the high set current The setting will adapt accordingly based on predefined rule based algorithm Finally the simulation result will verify that the rule based algorithm works properly to make the protection relay setting adaptive for the demand side of the DC microgrid application
dc.language	en
dc.publisher	IEEE
dc.relation.ispartof	2024 IEEE 34th Australasian Universities Power Engineering Conference (AUPEC)
dc.relation.ispartof	2024 IEEE 34th Australasian Universities Power Engineering Conference
dc.relation.isbasedon	10.1109/aupec62273.2024.10807608
dc.rights	info:eu-repo/semantics/closedAccess
dc.title	Adaptive Overcurrent Relay Protection Strategy for Demand-side in Offshore DC Microgrids
dc.type	Conference Proceeding
utslib.citation.volume	00
utslib.location.activity	Sydney, Australia
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	2025-02-27T18:50:36Z
pubs.finish-date	2024-11-22
pubs.place-of-publication	Piscataway, USA
pubs.publication-status	Published
pubs.start-date	2024-11-20
pubs.volume	00
dc.location	Piscataway, USA

Abstract:

The integration of renewable energy sources such as solar wind waves and tidal energy by utilizing microgrids is becoming increasingly popular For offshore applications that operate in an islanded mode DC microgrids are preferred over AC microgrids due to their ease of the integration of energy storage systems ESS and renewable energy sources RES DC microgrids mitigate challenges faced by AC microgrids such as voltage imbalance harmonic currents and frequency deviations However DC microgrids face unique challenges particularly in protection systems due to a lack of standards limited research and insufficient expertise Current protection strategies need modification to adapt to the integration of multiple renewable energy sources ESS and various loads This paper proposes an adaptive approach utilizing rule based algorithm for DC microgrid protection systems to govern the overcurrent protection setting Hence the DC microgrids can dynamically adjust overcurrent settings in response to the change of load conditions ensuring reliable fault detection and system stability in the presence of various operating scenarios First the protection system of the DC microgrid is modelled and current for several schemes of demand are monitored Then the protection system is controlled by coordinating the current time curve of the overcurrent relay setting This can be achieved by controlling the pick up current the time multiplier settings TMS and the high set current The setting will adapt accordingly based on predefined rule based algorithm Finally the simulation result will verify that the rule based algorithm works properly to make the protection relay setting adaptive for the demand side of the DC microgrid application

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http://hdl.handle.net/10453/185396