Research on Harmonic Suppression Method of Terminal Grid Based on Virtual Impedance

IF 1.1 4区工程技术 Q4 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEJ Transactions on Electrical and Electronic Engineering Pub Date : 2025-03-19 DOI:10.1002/tee.70013

Wanlin Guan, Hang Su, Baoni Sun, Haoyu Li, Mingyu Xu, Xiaoguang Chen

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引用次数: 0

Abstract

Active filters are widely employed as effective tools for suppressing harmonic components caused by non-linear loads in terminal grid power systems. However, the efficacy of these filters is limited, resulting in increased operational expenses. Based on Virtual Impedance Harmonic Suppression (VIHS), this paper proposes a novel control method for addressing harmonic issues in terminal grids. By adopting a dq-axis control structure, the grid-connected system using the VIHS control method and the working principle are given. Furthermore, the voltage harmonic suppression coefficient at the point of common coupling (PCC) is defined to evaluate the harmonic suppression capability of VIHS method. Due to the existence of low-order harmonics and inductive loads, the Resistive-Inductive Virtual Impedance (RIVI) is identified as the optimal combination for actual working conditions, and the impact of RIVI control parameters on harmonic suppression is analyzed. Finally, the proposed VIHS method is evaluated through simulations and experiments, and the experimental results indicate that the VIHS control method effectively reduces harmonic components of the PCC voltage. © 2025 Institute of Electrical Engineers of Japan and Wiley Periodicals LLC.

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基于虚拟阻抗的终端电网谐波抑制方法研究

有源滤波器作为抑制终端电网中非线性负荷引起的谐波分量的有效手段被广泛应用。然而，这些过滤器的功效有限，导致运营费用增加。基于虚拟阻抗谐波抑制（VIHS），提出了一种解决终端电网谐波问题的新型控制方法。通过采用dq轴控制结构，给出了采用VIHS控制的并网系统的控制方法和工作原理。在此基础上，定义了共耦合点的电压谐波抑制系数，以评价VIHS方法的谐波抑制能力。由于低次谐波和电感负载的存在，确定了电阻-电感虚拟阻抗（RIVI）作为实际工况的最优组合，并分析了RIVI控制参数对谐波抑制的影响。最后，通过仿真和实验对所提出的VIHS控制方法进行了验证，实验结果表明，VIHS控制方法有效地降低了PCC电压的谐波分量。©2025日本电气工程师协会和Wiley期刊有限责任公司。

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

IEEJ Transactions on Electrical and Electronic Engineering 工程技术-工程：电子与电气

CiteScore

2.70

自引率

10.00%

发文量

199

审稿时长

4.3 months

期刊介绍： IEEJ Transactions on Electrical and Electronic Engineering (hereinafter called TEEE ) publishes 6 times per year as an official journal of the Institute of Electrical Engineers of Japan (hereinafter "IEEJ"). This peer-reviewed journal contains original research papers and review articles on the most important and latest technological advances in core areas of Electrical and Electronic Engineering and in related disciplines. The journal also publishes short communications reporting on the results of the latest research activities TEEE ) aims to provide a new forum for IEEJ members in Japan as well as fellow researchers in Electrical and Electronic Engineering from around the world to exchange ideas and research findings.