Start-Up and Fault-Ride-Through Strategy for Offshore Wind Power via DRU-HVDC Transmission System

Yiting Zhang, Wenjiang Zhu, Cheng Tang, Ni Liu, Sinan Li and Hong Wang ()
Additional contact information
Yiting Zhang: School of Mechanical Engineering and Automation, Harbin Institute of Technology, Shenzhen 518055, China
Wenjiang Zhu: China Nuclear Power Technology Research Institute Co., Ltd., Shenzhen 518031, China
Cheng Tang: China Nuclear Power Technology Research Institute Co., Ltd., Shenzhen 518031, China
Ni Liu: School of Mechanical Engineering and Automation, Harbin Institute of Technology, Shenzhen 518055, China
Sinan Li: School of Mechanical Engineering and Automation, Harbin Institute of Technology, Shenzhen 518055, China
Hong Wang: School of Mechanical Engineering and Automation, Harbin Institute of Technology, Shenzhen 518055, China

Energies, 2024, vol. 17, issue 19, 1-19

Abstract: The diode-rectifier unit (DRU)-based high-voltage direct current (HVDC) transmission system offers an economical solution for offshore wind power transmission. However, this approach requires offshore wind farms to establish a strong grid voltage. To meet this requirement while fulfilling the dynamic characteristics of the DRU, this paper proposes an advanced grid-forming (GFM) control strategy for offshore wind turbines connected to DRU-HVDC. The strategy incorporates a P-U controller and a Q- ω controller based on reactive power synchronization. Furthermore, a novel virtual power-based pre-synchronization method and an adaptive virtual impedance technique are integrated into the proposed GFM control to improve system performance during wind turbine (WT) integration and low-voltage ride-through (LVRT) scenarios. The virtual power-based pre-synchronization method reduces voltage spikes during the integration of new wind turbines, while the adaptive virtual impedance technique effectively suppresses fault currents during low-voltage faults, enabling faster recovery. Simulation results validate the effectiveness of the proposed GFM control strategy, demonstrating improved start-up and LVRT performance through the pre-synchronization and adaptive virtual impedance methods.

Keywords: DRU-HVDC; grid-forming; virtual impedance; current limiting; pre-synchronization; wind farm (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2024
References: View complete reference list from CitEc
Citations:

Downloads: (external link)
https://www.mdpi.com/1996-1073/17/19/4968/pdf (application/pdf)
https://www.mdpi.com/1996-1073/17/19/4968/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jeners:v:17:y:2024:i:19:p:4968-:d:1492244

Access Statistics for this article

Energies is currently edited by Ms. Agatha Cao

More articles in Energies from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().