Control strategy for direct voltage and frequency stability enhancement in HVAC/HVDC grids

Azizi, N; Moradi CheshmehBeigi, H; Rouzbehi, K

Control strategy for direct voltage and frequency stability enhancement in HVAC/HVDC grids

Azizi, N Moradi CheshmehBeigi, H Rouzbehi, K

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Publisher:: INST ENGINEERING TECHNOLOGY-IET
Publication Type:: Journal Article
Citation:: IET Renewable Power Generation, 2021, 15, (16), pp. 3915-3926
Issue Date:: 2021-12-01

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Field	Value	Language
dc.contributor.author	Azizi, N
dc.contributor.author	Moradi CheshmehBeigi, H
dc.contributor.author	Rouzbehi, K https://orcid.org/0000-0002-3623-4840
dc.date.accessioned	2022-04-10T03:14:43Z
dc.date.available	2022-04-10T03:14:43Z
dc.date.issued	2021-12-01
dc.identifier.citation	IET Renewable Power Generation, 2021, 15, (16), pp. 3915-3926
dc.identifier.issn	1752-1416
dc.identifier.issn	1752-1424
dc.identifier.uri	http://hdl.handle.net/10453/156013
dc.description.abstract	Direct voltage fluctuations due to the presence of relatively large DC reactors (as an essential part of HVDC breakers), lack of inertia, and unwanted frequency fluctuations in the AC side of HVDC grids, have major consequences on the stability of HVAC/HVDC grids. The use of the DC Power System Stabilizer (DC-PSS) can damp and eliminate voltage oscillations caused by the presence of the DC reactors. However, DC-PSS cannot address the issues of inertia and unwanted frequency fluctuations. A method to improve inertia is proposed here that can operate well with the droop controller, and DC-PSS does not interfere with power-sharing and does not interact with any of these elements. Since the presence of a droop controller in HVAC/HVDC grids associates with power and direct voltage, the method proposed here can improve direct voltage fluctuations by eliminating severe power peaks. Moreover, this method does not change the voltage level of the entire system, so there is no need to change the set-points of controllers. In addition, all parameters of the controllers are tuned by an intelligent algorithm, and the Participation factor (PF) scheme is used to find the proper placement of the proposed controller.
dc.language	English
dc.publisher	INST ENGINEERING TECHNOLOGY-IET
dc.relation.ispartof	IET Renewable Power Generation
dc.relation.isbasedon	10.1049/rpg2.12307
dc.rights	info:eu-repo/semantics/openAccess
dc.subject	0906 Electrical and Electronic Engineering
dc.subject.classification	Energy
dc.title	Control strategy for direct voltage and frequency stability enhancement in HVAC/HVDC grids
dc.type	Journal Article
utslib.citation.volume	15
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	open_access	*
dc.date.updated	2022-04-10T03:14:41Z
pubs.issue	16
pubs.publication-status	Published
pubs.volume	15
utslib.citation.issue	16

Abstract:

Direct voltage fluctuations due to the presence of relatively large DC reactors (as an essential part of HVDC breakers), lack of inertia, and unwanted frequency fluctuations in the AC side of HVDC grids, have major consequences on the stability of HVAC/HVDC grids. The use of the DC Power System Stabilizer (DC-PSS) can damp and eliminate voltage oscillations caused by the presence of the DC reactors. However, DC-PSS cannot address the issues of inertia and unwanted frequency fluctuations. A method to improve inertia is proposed here that can operate well with the droop controller, and DC-PSS does not interfere with power-sharing and does not interact with any of these elements. Since the presence of a droop controller in HVAC/HVDC grids associates with power and direct voltage, the method proposed here can improve direct voltage fluctuations by eliminating severe power peaks. Moreover, this method does not change the voltage level of the entire system, so there is no need to change the set-points of controllers. In addition, all parameters of the controllers are tuned by an intelligent algorithm, and the Participation factor (PF) scheme is used to find the proper placement of the proposed controller.

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http://hdl.handle.net/10453/156013