A stability enhancement strategy for grid-forming converters considering current limitation

ZHAO Tieying; WANG Haoran; HUANG Zhiyuan; QI Yuang; TIAN Peijian; YANG Haoran

doi:10.19783/j.cnki.pspc.251248

English Version Journal Login

您当前的位置：

首页 >

文章列表页 >

A stability enhancement strategy for grid-forming converters considering current limitation

更新时间：2026-05-14

- A stability enhancement strategy for grid-forming converters considering current limitation
- Power System Protection and Control Vol. 54, Issue 10, (2026)
- 作者机构：
- 作者简介：
- 基金信息：
- DOI：10.19783/j.cnki.pspc.251248
  CLC：
- Published：2026
- 稿件说明：
移动端阅览
ZHAO Tieying, WANG Haoran, HUANG Zhiyuan, et al. A stability enhancement strategy for grid-forming converters considering current limitation[J]. Power System Protection and Control, 2026, 54(10).
DOI：

ZHAO Tieying, WANG Haoran, HUANG Zhiyuan, et al. A stability enhancement strategy for grid-forming converters considering current limitation[J]. Power System Protection and Control, 2026, 54(10). DOI： 10.19783/j.cnki.pspc.251248.

摘要

针对电压跌落工况下构网型变流器 (grid-forming converter

GFC) 存在的过流及暂态稳定性不足的问题，提出了一种结合电流限制的暂态稳定性增强控制策略。首先，介绍了所研究的 GFC 结构，分析了过电流的成因及常规限流方法导致暂态失稳的机理。其次，引入自适应虚拟阻抗以限制故障发生及故障持续期间的过电流，并通过电网电压检测自适应调整参考功率，从而提高功角稳定性。此外，提出了一种基于控制器内部变量检测电网电压骤降幅度的方法，无需额外采样电网电压或测量线路阻抗。最后，通过仿真与实验结果的对比分析，验证了所提控制方法的正确性与有效性。

Abstract

In response to the issues of overcurrent and insufficient transient stability in grid-forming converters (GFCs) under voltage sag conditions

this paper proposes a transient stability enhancement control strategy incorporating current limitation. First

the structure of the studied GFC is introduced

and the causes of overcurrent as well as the mechanisms by which conventional current limiting methods may lead to transient instability are analyzed. Second

an adaptive virtual impedance is introduced to limit overcurrent during both fault initiation and fault duration. Meanwhile

the reference power is adaptively adjusted through grid voltage detection

thereby improving power-angle stability. In addition

a method for detecting the magnitude of grid voltage dips based on internal controller variables is proposed

which eliminates the need for additional grid voltage measurements or line impedance estimation. Finally

the correctness and effectiveness of the proposed control method are verified through comparative simulation and experimental results.

关键词

Keywords

references

WANG X, BLAABJERG F. Harmonic stability in power electronic-based power systems: concept, modeling, and analysis[J]. IEEE Transactions on Smart Grid, 2018, 10(3): 2858-2870.

QORIA T, GRUSON F, COLAS F, et al. Current limiting algorithms and transient stability analysis of grid-forming VSCs[J]. Electric Power Systems Research, 2020, 189.

ZHU D, ZHOU S, ZOU X, et al. Improved design of PLL controller for LCL-type grid-connected converter in weak grid[J]. IEEE Transactions on Power Electronics, 2019, 35(5): 4715-4727.

ZHAO X X, FLYNN D. Freezing grid-forming converter virtual angular speed to enhance transient stability under current reference limiting[C]//2020 IEEE 21st Workshop on Control and Modeling for Power Electronics (COMPEL), November 9-12, 2020, Aalborg, Denmark: 1-7.

HUANG L, XIN H, WANG Z, et al. Transient stability analysis and control design of droop-controlled voltage source converters considering current limitation[J]. IEEE Transactions on Smart Grid, 2017, 10(1): 578-591.

SAFFAR K G, DRISS S, AJAEI F B. Impacts of current limiting on the transient stability of the virtual synchronous generator[J]. IEEE Transactions on Power Electronics, 2022, 38(2): 1509-1521.

WANG J, ZHANG X. Active power and voltage cooperative control for improving fault ride-through capability of grid-forming converters[J]. IEEE Transactions on Industrial Electronics, 2024, 71(10): 12301-12311.

CHEN S, SUN Y, HAN H, et al. A modified VSG control scheme with virtual resistance to enhance both small-signal stability and transient synchronization stability[J]. IEEE Transactions on Power Electronics, 2023, 38(5): 6005-6014.

TAUL M G, WANG X, DAVARI P, et al. Current limiting control with enhanced dynamics of grid-forming converters during fault conditions[J]. IEEE Journal of Emerging and Selected Topics in Power Electronics, 2019, 8(2): 1062-1073.

LIU T, WANG X, LIU F, et al. A current limiting method for single-loop voltage-magnitude controlled grid-forming converters during symmetrical faults[J]. IEEE Transactions on Power Electronics, 2021, 37(4): 4751-4763.

ZAREI S F, MOKHTARI H, GHASEMI M A, et al. Reinforcing fault ride through capability of grid forming voltage source converters using an enhanced voltage control scheme[J]. IEEE Transactions on Power Delivery, 2018, 34(5): 1827-1842.

PAN D, WANG X, LIU F, et al. Transient stability of voltage-source converters with grid-forming control: a design-oriented study[J]. IEEE Journal of Emerging and Selected Topics in Power Electronics, 2019, 8(2): 1019-1033.

HU X, LI Z, PAN C, et al. An adaptive virtual-impedance-based current-limiting method with the functionality of transient stability enhancement for grid-forming converter[J]. Electronics, 2024, 13(14): 2750.

PAQUETTE A D, DIVAN D M. Virtual impedance current limiting for inverters in microgrids with synchronous generators[J]. IEEE Transactions on Industry Applications, 2014, 51(2): 1630-1638.

WU H, WANG X. Small-signal modeling and controller parameters tuning of grid-forming VSCs with adaptive virtual impedance-based current limitation[J]. IEEE Transactions on Power Electronics, 2021, 37(6): 7185-7199.

Views

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Robust disturbance-rejection control strategy for grid-connected converters based on operation mode switching

基于角频率偏差积分反馈的构网型逆变器暂态稳定提升策略

计及虚拟惯量控制与低电压穿越的光伏发电系统暂态稳定分析

Adaptive droop control of VSC-MTDC incorporating power change rate and margin feedback

A few‑shot transient stability screening method for N‑k contingencies based on meta‑learning and an improved Transformer

Related Author

XIN Yechun

YANG Mingcheng

LI Guoqing

LI Ling

YIN Guanghan

JIN Guobin

ZHOU Buxiang

Related Institution

现代电力系统仿真控制与绿色电能新技术教育部重点实验室(东北电力大学)

ZANG Tianlei(1. College of Electrical Engineering, Sichuan University

Power Dispatching & Control Center of Guizhou Power Grid Co., Ltd.

JIA Limin(1. China Institute for Energy and Transportation Integrated Development, North China Electric Power University

State Key Laboratory of Advanced Rail Autonomous Operation, Beijing Jiaotong University

AI问答

⁰