MMC-HVDC输电中变流器接口产生的新型低频振荡研究

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

摘要

基于模块化多电平变换器的高压直流（MMC-HVDC）传输可再生能源的复杂动态特性可能诱发新的低频振荡（LFO）。这种稳定性问题在现有文献中尚未深入探讨。鉴于此，本文建立了具有代表性的MMC-HVDC变流器接口代（CIGs）模型。然后，利用特征值分析、时域仿真和方框图研究了新型LFO的机理和特征。本文首次指出了两种LFO模式在该系统中共存，并且可能同时变得不稳定。LFO模式主要来源于CIGs锁相环（PLL）、CIGs直流电压控制和MMC交流电压控制之间的相互作用。这些回路对两种LFO模式的贡献对某些参数设置很敏感。本文进一步分析了影响LFO特性的关键因素，包括CIGs和MMC的控制参数以及在线CIGs的数量。讨论了可能的控制措施，以解决这一新的振荡问题。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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

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.