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Frequency Regulation Strategies in Grid Integrated Offshore Wind Turbines via VSC-HVDC Technology: A Review

Energies (Basel), 2017, Vol.10 (9), p.1244 [Peer Reviewed Journal]

Copyright MDPI AG 2017 ;ISSN: 1996-1073 ;EISSN: 1996-1073 ;DOI: 10.3390/en10091244

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Title:
Frequency Regulation Strategies in Grid Integrated Offshore Wind Turbines via VSC-HVDC Technology: A Review
Author: Jallad, Jafar ; Mekhilef, Saad ; Mokhlis, Hazlie
Subjects: Control ; Control methods ; Control systems ; Converters ; Direct current ; Electric potential ; Electric power transmission ; Frequency control ; frequency regulation ; Frequency stability ; High voltage ; high voltage direct current transmission control ; Inertia ; inertia emulation ; Internal energy ; Offshore ; Offshore energy sources ; Offshore operations ; Turbines ; Variable speed ; Voltage ; voltage source converter ; Wind power ; wind turbine-permanent magnet synchronous generators (WT-PMSG) ; Wind turbines
Is Part Of: Energies (Basel), 2017, Vol.10 (9), p.1244
Description: The inclusion of wind energy in a power system network is currently seeing a significant increase. However, this inclusion has resulted in degradation of the inertia response, which in turn seriously affects the stability of the power system’s frequency. This problem can be solved by using an active power reserve to stabilize the frequency within an allowable limit in the event of a sudden load increment or the loss of generators. Active power reserves can be utilized via three approaches: (1) de-loading method (pitching or over-speeding) by a variable speed wind turbine (VSWT); (2) stored energy in the capacitors of voltage source converter-high voltage direct current (VSC-HVDC) transmission; and (3) coordination of frequency regulation between the offshore wind farms and the VSC-HVDC transmission. This paper reviews the solutions that can be used to overcome problems related to the frequency stability of grid- integrated offshore wind turbines. It also details the permanent magnet synchronous generator (PMSG) with full-scale back to back (B2B) converters, its corresponding control strategies, and a typical VSC-HVDC system with an associated control system. The control methods, both on the levels of a wind turbine and the VSC-HVDC system that participate in a system’s primary frequency control and emulation inertia, are discussed.
Publisher: Basel: MDPI AG
Language: English
Identifier: ISSN: 1996-1073
EISSN: 1996-1073
DOI: 10.3390/en10091244
Source: Geneva Foundation Free Medical Journals at publisher websites
Directory of Open Access Journals
ROAD: Directory of Open Access Scholarly Resources
ProQuest Central

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Frequency Regulation Strategies in Grid Integrated Offshore Wind Turbines via VSC-HVDC Technology: A Review

Copyright MDPI AG 2017 ;ISSN: 1996-1073 ;EISSN: 1996-1073 ;DOI: 10.3390/en10091244

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