Harmonic suppression strategy based on cross-branch enhanced VSG control

XU Tao; LI Hugang; YANG Longyu

doi:10.11930/j.issn.1004-9649.202505013

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Harmonic suppression strategy based on cross-branch enhanced VSG control

更新时间：2026-04-30

- Harmonic suppression strategy based on cross-branch enhanced VSG control
- Vol. 59, Issue 4, Pages: 70-78(2026)
- 作者机构：
  
  国网宁夏电力有限公司石嘴山供电公司,宁夏,石嘴山,753400
- 作者简介：
- 基金信息：
- DOI：10.11930/j.issn.1004-9649.202505013
  CLC：
- Online First：20 April 2026，
  
  Published：2026
- 稿件说明：
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徐涛, 李互刚, 杨龙雨. 基于交叉支路增强VSG控制的谐波抑制策略[J]. 中国电力, 2026, 59(4): 70-78.

XU Tao, LI Hugang, YANG Longyu. Harmonic suppression strategy based on cross-branch enhanced VSG control[J]. 2026, 59(4): 70-78.
徐涛, 李互刚, 杨龙雨. 基于交叉支路增强VSG控制的谐波抑制策略[J]. 中国电力, 2026, 59(4): 70-78. DOI： 10.11930/j.issn.1004-9649.202505013.

XU Tao, LI Hugang, YANG Longyu. Harmonic suppression strategy based on cross-branch enhanced VSG control[J]. 2026, 59(4): 70-78. DOI： 10.11930/j.issn.1004-9649.202505013.

摘要

大量新能源发电设备接入后，多节点配电台区面临电流电能质量差的实际问题。同时虚拟同步发电机（virtual synchronous generator，VSG）主导的构网型变流器部署却忽略了电流电能质量问题。因此，为在保持VSG特性的同时增加电流谐波抑制能力，提出了一种增强型VSG控制策略。首先，分析多VSG联合运行时交流电网与VSG电角度和电压的交互机理；其次，提出引入交叉反馈支路的VSG控制方法，通过频率-无功功率支路和电压-有功功率支路实现波动补偿，且不影响系统惯性特性；最后，搭建了IEEE-69网络模拟配电台区，并设置了6个VSG。实验结果表明：增强型VSG能够为系统提供惯性和阻尼支撑。与传统VSG相比，电流总谐波失真降低64.2%~83.8%，能够有效抑制传统VSG产生的谐波对配电网的影响。

Abstract

The multi-node distribution station area after a large number of new energy power generation equipment is connected faces the practical problem of poor current and power quality. At the same time

the deployment of grid-connected converters dominated by virtual synchronous generator (VSG) ignores the problem of current and power quality. Therefore

in order to maintain the VSG characteristics and increase the current harmonic suppression ability

this paper proposes an enhanced VSG control strategy. Firstly

the interaction mechanism of electrical angle and voltage between AC grid and VSG in multi-VSG joint operation is analyzed. Secondly

the VSG control with cross feedback branch is proposed. This method proposes a frequency-reactive power branch and a voltage-active power branch to compensate for fluctuations without affecting the inertial characteristics of the system. Finally

the IEEE-69 network simulation distribution station area is built

and 6 VSGs are set up. The experimental results show that the enhanced VSG can provide inertial and damping support for the system. The quantitative results show that compared with the traditional VSG

the total harmonic distortion of the current is reduced by 64.2%~83.8%

which can effectively suppress the influence of the harmonics generated by the traditional VSG on the distribution network.

关键词

Keywords

references

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