A Comprehensive VSG-Based Onshore FRT Control Strategy for OWFs With VSC-MT-HVDC Transmission

This paper proposes a communication-free control strategy at the offshore wind farm (OWF) level to enhance onshore fault ride-through (FRT) grid code compliance of the voltage source converter (VSC)-based multi-terminal high voltage direct current (MT-HVDC) grid. In this proposal, the emerging virtu...

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Autores principales:	Seyed Saeid Heidary Yazdi, Jafar Milimonfared, Seyed Hamid Fathi, Kumars Rouzbehi
Formato:	article
Lenguaje:	EN
Publicado:	IEEE 2021
Materias:	Fault-ride-through multi-terminal HVDC grid offshore wind farm power reduction method type 4 WTG virtual synchronous generator Electrical engineering. Electronics. Nuclear engineering TK1-9971
Acceso en línea:	https://doaj.org/article/64b9059bb73045fcadad958566b193c6
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id	oai:doaj.org-article:64b9059bb73045fcadad958566b193c6
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spelling	oai:doaj.org-article:64b9059bb73045fcadad958566b193c62021-12-01T00:00:37ZA Comprehensive VSG-Based Onshore FRT Control Strategy for OWFs With VSC-MT-HVDC Transmission2169-353610.1109/ACCESS.2019.2945919https://doaj.org/article/64b9059bb73045fcadad958566b193c62021-01-01T00:00:00Zhttps://ieeexplore.ieee.org/document/8870211/https://doaj.org/toc/2169-3536This paper proposes a communication-free control strategy at the offshore wind farm (OWF) level to enhance onshore fault ride-through (FRT) grid code compliance of the voltage source converter (VSC)-based multi-terminal high voltage direct current (MT-HVDC) grid. In this proposal, the emerging virtual synchronous generator (VSG) concept is employed to equip the Type 4 wind turbine generator (WTG)s with inherent grid forming ability. Accordingly, it is proposed to switch the offshore HVDC converters control mode from grid forming to grid feeding during onshore FRT period to realize direct wind power in-feed reduction as a function of the severity of MT-HVDC grid’s overvoltage. The related dynamics are mainly characterized by the high-speed current control loop, so improved OWF response is achieved during onshore FRT period as conventional voltage/frequency modulation strategies are not employed. New analysis/amendments are also proposed to study and improve the transient active power reduction sharing between the WTGs in first few power cycles under wind wake effect. Finally, with the objective of a smooth transfer of HVDC converters and WTGs in several proposed operation states, a set of state machines are proposed considering whole WTG’s dynamics. Comprehensive time-domain simulations are performed with averaged electromagnetic transient models to demonstrate the improved onshore FRT behavior in terms of minimizing the electrical stress at both MT-HVDC grid and OWF levels.Seyed Saeid Heidary YazdiJafar MilimonfaredSeyed Hamid FathiKumars RouzbehiIEEEarticleFault-ride-throughmulti-terminal HVDC gridoffshore wind farmpower reduction methodtype 4 WTGvirtual synchronous generatorElectrical engineering. Electronics. Nuclear engineeringTK1-9971ENIEEE Access, Vol 9, Pp 155788-155804 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Fault-ride-through multi-terminal HVDC grid offshore wind farm power reduction method type 4 WTG virtual synchronous generator Electrical engineering. Electronics. Nuclear engineering TK1-9971
spellingShingle	Fault-ride-through multi-terminal HVDC grid offshore wind farm power reduction method type 4 WTG virtual synchronous generator Electrical engineering. Electronics. Nuclear engineering TK1-9971 Seyed Saeid Heidary Yazdi Jafar Milimonfared Seyed Hamid Fathi Kumars Rouzbehi A Comprehensive VSG-Based Onshore FRT Control Strategy for OWFs With VSC-MT-HVDC Transmission
description	This paper proposes a communication-free control strategy at the offshore wind farm (OWF) level to enhance onshore fault ride-through (FRT) grid code compliance of the voltage source converter (VSC)-based multi-terminal high voltage direct current (MT-HVDC) grid. In this proposal, the emerging virtual synchronous generator (VSG) concept is employed to equip the Type 4 wind turbine generator (WTG)s with inherent grid forming ability. Accordingly, it is proposed to switch the offshore HVDC converters control mode from grid forming to grid feeding during onshore FRT period to realize direct wind power in-feed reduction as a function of the severity of MT-HVDC grid’s overvoltage. The related dynamics are mainly characterized by the high-speed current control loop, so improved OWF response is achieved during onshore FRT period as conventional voltage/frequency modulation strategies are not employed. New analysis/amendments are also proposed to study and improve the transient active power reduction sharing between the WTGs in first few power cycles under wind wake effect. Finally, with the objective of a smooth transfer of HVDC converters and WTGs in several proposed operation states, a set of state machines are proposed considering whole WTG’s dynamics. Comprehensive time-domain simulations are performed with averaged electromagnetic transient models to demonstrate the improved onshore FRT behavior in terms of minimizing the electrical stress at both MT-HVDC grid and OWF levels.
format	article
author	Seyed Saeid Heidary Yazdi Jafar Milimonfared Seyed Hamid Fathi Kumars Rouzbehi
author_facet	Seyed Saeid Heidary Yazdi Jafar Milimonfared Seyed Hamid Fathi Kumars Rouzbehi
author_sort	Seyed Saeid Heidary Yazdi
title	A Comprehensive VSG-Based Onshore FRT Control Strategy for OWFs With VSC-MT-HVDC Transmission
title_short	A Comprehensive VSG-Based Onshore FRT Control Strategy for OWFs With VSC-MT-HVDC Transmission
title_full	A Comprehensive VSG-Based Onshore FRT Control Strategy for OWFs With VSC-MT-HVDC Transmission
title_fullStr	A Comprehensive VSG-Based Onshore FRT Control Strategy for OWFs With VSC-MT-HVDC Transmission
title_full_unstemmed	A Comprehensive VSG-Based Onshore FRT Control Strategy for OWFs With VSC-MT-HVDC Transmission
title_sort	comprehensive vsg-based onshore frt control strategy for owfs with vsc-mt-hvdc transmission
publisher	IEEE
publishDate	2021
url	https://doaj.org/article/64b9059bb73045fcadad958566b193c6
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A Comprehensive VSG-Based Onshore FRT Control Strategy for OWFs With VSC-MT-HVDC Transmission

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