Frequency control of voltage sourced converter-based multi-terminal direct current interconnected system based on virtual synchronous generator

• Autorzy: Li Congshan , Zhang Xiaowei , He Ping , Zhen Zikai , Zhao Kefeng

Identyfikatory

DOI

10.24425/aee.2023.147421

• Języki publikacji: EN

Abstrakty

EN

In response to the inability of the flexible DC transmission system connected to the AC grid under conventional control strategies to provide inertia to the system as well as to participate in frequency regulation, a virtual synchronous generator (VSG) control strategy is proposed for a voltage source converter (VSC)-based multi-terminal high-voltage direct current (VSC-MTDC) interconnection system. First, the virtual controller module is designed by coupling AC frequency and active power through virtual inertia control, so that the VSC-MTDC system can provide inertia response for AC grid frequency. Second, by introducing the power margin of the converter station into the droop coefficient, the unbalanced power on the DC side is reasonably allocated to reduce the overshoot of the DC voltage in the regulation process. Finally, the power regulation capability of the normal AC system is used to provide power support to the fault end system, reducing frequency deviations and enabling inter-regional resource complementation. The simulation model of the three-terminal flexible DC grid is built in PSCAD/EMTDC, and the effectiveness of the proposed control strategy is verified by comparing the conventional control strategy and the additional frequency control strategy.

Słowa kluczowe

EN

adaptive droop control; power margin; VSG; virtual synchronous generator

• Wydawca: Polish Academy of Sciences, Committee on Electrical Engineering
• Czasopismo: Archives of Electrical Engineering
• Rocznik: 2023
• Tom: Vol. 72, nr 4
• Strony: 971--986
• Opis fizyczny: Bibliogr. 27 poz., fig., tab.

Twórcy

autor

Li Congshan

• College of Electrical Information Engineering, Zhengzhou University of Light Industry China

• https://orcid.org/0000-0003-1321-7519

autor

Zhang Xiaowei

• College of Electrical Information Engineering, Zhengzhou University of Light Industry China

autor

He Ping

• College of Electrical Information Engineering, Zhengzhou University of Light Industry China

• https://orcid.org/0000-0002-1692-5804

autor

Zhen Zikai

• College of Electrical Information Engineering, Zhengzhou University of Light Industry China

• https://orcid.org/0000-0003-0172-3246

autor

Zhao Kefeng

• College of Electrical Information Engineering, Zhengzhou University of Light Industry China

Bibliografia

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Uwagi

Opracowanie rekordu ze środków MNiSW, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2024).