Active Power-Frequency Oscillation Suppression Strategy for Grid-forming VSG Parallel Systems Based on Lead-Lag Compensation

LIANG Chuanfeng; SHI Rongliang; DONG Zheng; LI Junming; BAI Xinyuan; LI Junhui

doi:10.20204/j.sp.2026.02008

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Active Power-Frequency Oscillation Suppression Strategy for Grid-forming VSG Parallel Systems Based on Lead-Lag Compensation

更新时间：2026-02-28

- Active Power-Frequency Oscillation Suppression Strategy for Grid-forming VSG Parallel Systems Based on Lead-Lag Compensation
- Vol. 54, Issue 2, Pages: 61-68(2026)
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- DOI：10.20204/j.sp.2026.02008
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- Published：2026
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梁传峰,石荣亮,董政,黎俊铭,白馨元,李军徽.基于超前滞后补偿的构网型VSG并联系统有功-频率振荡抑制策略[J].智慧电力,2026,54(2):61-68.

doi:10.20204/j.sp.2026.02008
梁传峰,石荣亮,董政,黎俊铭,白馨元,李军徽.基于超前滞后补偿的构网型VSG并联系统有功-频率振荡抑制策略[J].智慧电力,2026,54(2):61-68. DOI： 10.20204/j.sp.2026.02008.

doi:10.20204/j.sp.2026.02008 DOI：

摘要

为应对高比例可再生能源并网给电力系统稳定性带来的挑战，构网型虚拟同步发电机（GFVSG）技术通过模拟同步发电机转子运动方程，为电网提供了必要的惯量和电压支撑。然而，构网型虚拟同步发电机并联组网系统（GFVPNS）在负载扰动下易出现有功-频率振荡问题，影响系统供电安全性与运行可靠性。针对此问题，提出一种基于超前滞后补偿的GFVPNS功频振荡抑制策略。首先，建立GFVPNS的机械导纳模型，从机电比拟角度揭示系统功频振荡的产生机理。进而，在GFVSG控制中引入超前滞后补偿环节，构建改进系统的机械导纳模型，详细给出补偿参数的设计方法，并通过根轨迹分析对比关键参数（虚拟惯量、虚拟阻尼、线路阻抗）对系统动态特性的影响规律。最后，搭建GFVPNS的MATLAB仿真模型与物理实验平台，在负载阶跃扰动下进行验证。仿真与实验结果表明，所提策略能有效抑制系统有功和频率振荡，同时保证各GFVSG单元按容量精确均分负载，且避免了依赖通信或复杂微分运算。该研究为提升GFVPNS的动态响应性能与运行稳定性提供了新思路。

Abstract

To address the challenges posed by the integration of a high proportion of renewable energy sources to power system stability

the grid-forming virtual synchronous generator （GFVSG） technology

by emulating the rotor motion equation of synchronous generators

provides the necessary inertia and voltage support for the power grid. However

the grid-forming virtual synchronous generator parallel networking system （GFVPNS） is prone to active power-frequency oscillation issues under load disturbances

which affects system power supply security and operational reliability. To solve this problem

this paper proposes a GFVPNS power-frequency oscillation suppression strategy based on lead-lag compensation. First

a mechanical admittance model of the GFVPNS is established to reveal the mechanism of system power-frequency oscillation generation from the perspective of electromechanical analogy. Then

a lead-lag compensation link is introduced into the GFVSG control to construct a mechanical admittance model of the improved system. The design method for the compensation parameters is detailed

and the influence patterns of key parameters （virtual inertia

virtual damping

line impedance） on the system's dynamic characteristics are compared and analyzed through root locus analysis. Finally

a MATLAB simulation model and a physical experimental platform for the GFVPNS are built for verification under load step disturbances. The simulation and experimental results show that the proposed strategy can effectively suppress system active power and frequency oscillations while ensuring accurate proportional load sharing among GFVSG units according to their capacity

and avoids reliance on communication or complex differential calculations. This research provides a new approach for enhancing the dynamic response performance and operational stability of GFVPNS.

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references

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