Analysis and Control of Multi-Mode Oscillations in Multi-Infeed MMC-HVDC Systems

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

IEEE Transactions on Power Delivery Pub Date : 2025-02-13 DOI:10.1109/TPWRD.2025.3541388

Jing Lyu;Jiahao Yin;Lei Gao

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引用次数: 0

Abstract

In recent years, the phenomenon of wideband oscillation has emerged as a significant concern for small-signal stability in modular multilevel converter (MMC) based high-voltage direct current (MMC-HVDC) systems. Sub/super-synchronous oscillations (SSOs) and high-frequency oscillations (HFOs) have been frequently reported globally, prompting the implementation of numerous control strategies aimed at mitigating these oscillatory events. However, in more complex systems, such as multi-infeed MMC-HVDC systems, there exists the potential for multi-mode oscillations, which refers to the concurrent occurrence of multiple independent oscillation components at a single electrical node. This novel oscillation issue in multi-infeed MMC-HVDC systems is still lack of relevant research. To address this issue, an analytical approach using whole-system impedance analysis alongside a parameter sensitivity index is employed to investigate multi-mode oscillation phenomena in a multi-infeed MMC-HVDC system. Furthermore, an adaptive control strategy based on fast oscillation frequency detection is proposed, which demonstrates effectiveness across various operation conditions through case studies.

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多馈入MMC-HVDC系统多模态振荡分析与控制

近年来，宽带振荡现象已成为基于模块化多电平变换器（MMC）的高压直流（MMC- hvdc）系统中影响小信号稳定性的一个重要问题。亚/超同步振荡（SSOs）和高频振荡（hfo）已经在全球范围内频繁报道，促使许多控制策略的实施旨在减轻这些振荡事件。然而，在更复杂的系统中，如多馈入MMC-HVDC系统，存在多模振荡的可能性，多模振荡是指在单个电节点上同时出现多个独立的振荡分量。多馈入MMC-HVDC系统的振荡问题目前还缺乏相关研究。为了解决这一问题，采用全系统阻抗分析和参数灵敏度指标的分析方法来研究多馈入MMC-HVDC系统中的多模振荡现象。在此基础上，提出了一种基于快速振荡频率检测的自适应控制策略，并通过实例验证了该策略在各种工况下的有效性。

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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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.