Investigation of New Low-Frequency Oscillation Caused by Converter-Interfaced Generations With MMC-HVDC Transmission

IF 3.8 2区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Transactions on Power Delivery Pub Date : 2025-01-28 DOI:10.1109/TPWRD.2025.3535690

Jieyi Xu;Xiaorong Xie;Wenkai Dong;Peng Yu;Jiawei Xing

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引用次数: 0

Abstract

The intricate dynamics in renewables transmitted through modular multilevel converter based high voltage direct current (MMC-HVDC) may induce new low-frequency oscillation (LFO). This stability issue has not been deeply explored in existing literature. In light of this, this paper establishes a representative model of converter-interfaced generations (CIGs) with MMC-HVDC transmission. Then, eigenvalue-based analyses, time-domain simulations, and block diagrams are employed to investigate the mechanism and characteristics of the new LFO. For the first time, this paper indicates the coexistence of two LFO modes in such a system, which could become unstable simultaneously. The LFO modes mainly originate from the interaction among the phase-locked loop (PLL) of CIGs, DC voltage control of CIGs, and AC voltage control of MMC. These loops’ contributions to two LFO modes are sensitive to certain parameter settings. The paper further analyzes the key factors affecting LFO characteristics, including the control parameters of CIGs and MMC, and the number of online CIGs. Possible control measures for this new oscillation issue are also discussed.

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来源期刊

IEEE Transactions on Power Delivery 工程技术-工程：电子与电气

CiteScore

9.00

自引率

13.60%

发文量

513

审稿时长

6 months

期刊介绍： The scope of the Society embraces planning, research, development, design, application, construction, installation and operation of apparatus, equipment, structures, materials and systems for the safe, reliable and economic generation, transmission, distribution, conversion, measurement and control of electric energy. It includes the developing of engineering standards, the providing of information and instruction to the public and to legislators, as well as technical scientific, literary, educational and other activities that contribute to the electric power discipline or utilize the techniques or products within this discipline.