A Stability Control Method to Maintain Synchronization Stability of Wind Generation under Weak Grid

Minhai Wu, Jun Zeng, Gengning Ying, Jidong Xu, Shuangfei Yang, Yuebin Zhou and Junfeng Liu ()
Additional contact information
Minhai Wu: The School of Electric Power Engineering, South China University of Technology, Guangzhou 510640, China
Jun Zeng: The School of Electric Power Engineering, South China University of Technology, Guangzhou 510640, China
Gengning Ying: The School of Electric Power Engineering, South China University of Technology, Guangzhou 510640, China
Jidong Xu: The School of Electric Power Engineering, South China University of Technology, Guangzhou 510640, China
Shuangfei Yang: State Key Laboratory of HVDC, Electric Power Research Institute, China Southern Power Grid Co., Ltd., Guangzhou 510663, China
Yuebin Zhou: State Key Laboratory of HVDC, Electric Power Research Institute, China Southern Power Grid Co., Ltd., Guangzhou 510663, China
Junfeng Liu: The School of Automation Science and Engineering, South China University of Technology, Guangzhou 510640, China

Energies, 2024, vol. 17, issue 17, 1-15

Abstract: When wind generation systems operate under weak grid conditions, synchronization stability issues may arise, restricting the wind farms’ power transfer capacity. This paper aims to address these challenges on the grid side. Firstly, a clear exposition of the coupling mechanism between the grid-connected inverters (GCI) of wind generations and the weak grid is provided. Then, an equivalent parallel compensation method integrated into the PLL to enhance synchronization stability is proposed. The method changes the reference of the PLL and equivalently parallels the virtual resistance with the grid impedance, which alters the strength of the grid. It reshapes the inverter qq -axis impedance at the impedance level. And the proper design of the virtual resistance will enhance the system’s stability without compromising the dynamic performance of PLL. In addition, the proposed method is robust to the parameter changes of the grid-connected system and the grid impedance measurement error. Experimental results are presented to validate the effectiveness of the compensation method.

Keywords: wind generation; weak grid; synchronization stability; coupling mechanism; equivalent parallel compensation; stability analysis (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/1996-1073/17/17/4450/pdf (application/pdf)
https://www.mdpi.com/1996-1073/17/17/4450/ (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:17:p:4450-:d:1471793

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 ().