High-Frequency Resonance Coordinated Suppression Method of MMC-HVDC Systems Under Frequency Divided Voltage Feedforward Control

IF 3.7 2区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC IEEE Transactions on Power Delivery Pub Date : 2025-01-28 DOI:10.1109/TPWRD.2025.3535785

Yunfeng Li;Tao Wen;Yijia Cao;Yuhang Zhang;Weiyu Wang

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Abstract

In the modular multilevel converter (MMC) based high voltage direct current (HVDC) practical projects, the existing voltage feedforward control (VFC) method presents challenges in addressing the frequency shift of high-frequency resonance (HFR) caused by the changes in the interconnected AC system's operating conditions. In this paper, the mathematical characterization function of the impedance real part is used to reveal the mechanism why the existing VFC cannot simultaneously reshape the multiple HFR risk regions into the positive damping characteristics. Therefore, a frequency divided voltage feedforward control (FDVFC) based on the second-order band-pass filters (BPFs) is proposed to simultaneously reshape the multiple HFR risk regions into the positive damping characteristics. The proposal includes the selection of the number of BPFs and how to design their parameters. The parameter design principles and parameter selection ranges of the BPFs are presented one by one using the simplified model of the MMC in high-frequency band. Finally, the effectiveness and correctness of the FDVFC and its analytical calculation expressions for parameter selection are verified by time-domain simulations.

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分频电压前馈控制下MMC-HVDC高频共振协同抑制方法

在基于模块化多电平变换器（MMC）的高压直流（HVDC）实际工程中，现有的电压前馈控制（VFC）方法在解决互联交流系统运行条件变化引起的高频谐振（HFR）频移方面存在挑战。本文利用阻抗实部的数学表征函数揭示了现有VFC无法同时将多个HFR风险区域重塑为正阻尼特性的机理。为此，提出了一种基于二阶带通滤波器（bpf）的分频电压前馈控制（FDVFC），将多个HFR风险区域同时重构为正阻尼特性。该方案包括bpf数量的选择和参数的设计。利用MMC在高频波段的简化模型，逐一给出了bpf的参数设计原则和参数选择范围。最后，通过时域仿真验证了FDVFC及其参数选择解析计算表达式的有效性和正确性。

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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.