Current-limiting Strategy for Grid-forming Inverter-based Power Resources with Enhanced Voltage Support Under Asymmetric Faults

YOU Fuming; ZHENG Xiaodong; QIAN Min; CHAO Chenxu; WU Menghan; DING Lulu

doi:10.7500/AEPS20250607001

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Current-limiting Strategy for Grid-forming Inverter-based Power Resources with Enhanced Voltage Support Under Asymmetric Faults

Basic Research | 更新时间：2026-10-16

- Current-limiting Strategy for Grid-forming Inverter-based Power Resources with Enhanced Voltage Support Under Asymmetric Faults
- Automation of Electric Power Systems Vol. 50, Issue 20, Pages: 110-122(2026)
- 作者机构：
  
  1.电力传输与功率变换控制教育部重点实验室（上海交通大学），上海市 200240
  2.上海交通大学电气工程学院，上海市 200240
  3.中国船舶及海洋工程设计研究院，上海市 200011
  4.同济大学电子与信息工程学院，上海市 200092
- 作者简介：
- 基金信息：
  
  National Natural Science Foundation of China(52277112);National Key R&D Program of China(2024YFB4206501)
- DOI：10.7500/AEPS20250607001
  CLC：
- Received：07 June 2025，
  
  Revised：2025-12-07，
  
  Online First：06 May 2026，
  
  Published：25 October 2026
- 稿件说明：
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游馥铭,郑晓冬,钱敏等.增强电压支撑的构网型逆变电源不对称故障限流策略[J].电力系统自动化,2026,50(20):110-122.

YOU Fuming,ZHENG Xiaodong,QIAN Min,et al.Current-limiting Strategy for Grid-forming Inverter-based Power Resources with Enhanced Voltage Support Under Asymmetric Faults[J].Automation of Electric Power Systems,2026,50(20):110-122.
游馥铭,郑晓冬,钱敏等.增强电压支撑的构网型逆变电源不对称故障限流策略[J].电力系统自动化,2026,50(20):110-122. DOI： 10.7500/AEPS20250607001.

YOU Fuming,ZHENG Xiaodong,QIAN Min,et al.Current-limiting Strategy for Grid-forming Inverter-based Power Resources with Enhanced Voltage Support Under Asymmetric Faults[J].Automation of Electric Power Systems,2026,50(20):110-122. DOI： 10.7500/AEPS20250607001.

摘要

采用功率半导体的构网型逆变电源耐受过流能力较弱，在线路发生故障期间需实施电流限幅。然而，现有的限流策略大多聚焦于对称故障或单纯幅值限制，往往忽视了不对称故障下电网导则对低电压穿越期间输出正、负序无功电流的具体要求，且存在逆变器过流裕量未被完全利用的情形

削弱了其电压支撑能力。针对该问题，文中提出一种增强电压支撑能力的正、负序解耦虚拟阻抗限流策略。首先，基于电网导则，建立了对正、负序无功电流约束的虚拟阻抗计算模型；在此基础上，通过实时评估各相电流的越限风险，自适应优化正、负序虚拟阻抗值以最大化利用逆变器的过流裕量，并构建了无功电流比例系数的安全可行域。该方法在确保构网型逆变电源维持电压源特性的同时，增强了对正序电压的支撑与对负序电压不平衡的抑制能力。仿真与实验结果证明了所提策略在各类不对称故障和不同电网特性下均具有良好的有效性和鲁棒性。

Abstract

Grid-forming inverter-based power resources using power semiconductors have weak overcurrent capability

so current limiting needs to be implemented during line faults. However

existing current-limiting strategies mostly focus on symmetrical faults or simple amplitude limitation

often neglecting the specific requirements of grid codes for outputting positive and negative sequence reactive current during the low voltage ride-through period under asymmetrical faults. Moreover

the overcurrent margin of the inverter is not fully utilized

which weakens its voltage support capability. To address this problem

this paper proposes a positive and negative sequence decoupled virtual impedance current-limiting strategy to enhance the voltage support capability. First

based on the grid code

a virtual impedance calculation model with constraints on positive and negative sequence reactive current is established. On this basis

through real-time assessment of the over-limit risk of each phase current

the positive and negative sequence virtual impedance values are adaptively optimized to maximize the utilization of the inverter overcurrent margin

and a safe feasible region for the reactive current proportional coefficient is constructed. This method enhances the support for positive sequence voltage and the suppression capability for negative sequence voltage unbalance while ensuring the grid-forming inverter-based power resources maintain voltage source characteristics. Simulation and experimental results demonstrate that the proposed strategy has good effectiveness and robustness under various asymmetrical faults and different grid characteristics.

关键词

Keywords

references

黄萌，舒思睿，李锡林，等 . 面向同步稳定性的电力电子并网变流器分析与控制研究综述［J］. 电工技术学报， 2024 ， 39 （ 19 ）： 5978 - 5994 .

Huang Meng ， Shu Sirui ， Li Xilin ， et al . A review of synchronization-stability-oriented analysis and control of power electronic grid-connected converters ［J］. Transactions of China Electrotechnical Society ， 2024 ， 39 （ 19 ）： 5978 - 5994 .

刘辉，于思奇，孙大卫，等 . 构网型变流器控制技术及原理综述［J］. 中国电机工程学报， 2025 ， 45 （ 1 ）： 277 - 296 .

Liu Hui ， Yu Siqi ， Sun Dawei ， et al . An overview of control technologies and principles for grid-forming converters ［J］. Proceedings of the CSEE ， 2025 ， 45 （ 1 ）： 277 - 296 .

Rosso R ， Wang X F ， Liserre M ， et al . Grid-forming converters： control approaches， grid-synchronization， and future trends—a review ［J］. IEEE Open Journal of Industry Applications ， 2021 ， 2 ： 93 - 109 .

张兴，战祥对，吴孟泽，等 . 高渗透率新能源发电并网变流器跟网/构网混合模式控制综述［J］. 电力系统自动化， 2024 ， 48 （ 21 ）： 1 - 15 .

Zhang Xing ， Zhan Xiangdui ， Wu Mengze ， et al . Review on grid-following/grid-forming hybrid mode control for grid-connected converter in high penetration rate of renewable energy generation ［J］. Automation of Electric Power Systems ， 2024 ， 48 （ 21 ）： 1 - 15 .

王伟，周少泽，黄萌，等 . 构网型技术：演进历程、功能定位与应用展望［J］. 电力系统自动化， 2025 ， 49 （ 1 ）： 1 - 13 .

Wang Wei ， Zhou Shaoze ， Huang Meng ， et al . Grid-forming technologies： evolution history， function， and application prospects ［J］. Automation of Electric Power Systems ， 2025 ， 49 （ 1 ）： 1 - 13 .

詹长江，吴恒，王雄飞，等 . 构网型变流器稳定性研究综述［J］. 中国电机工程学报， 2023 ， 43 （ 6 ）： 2339 - 2358 .

Zhan Changjiang ， Wu Heng ， Wang Xiongfei ， et al . An overview of stability studies of grid-forming voltage source converters ［J］. Proceedings of the CSEE ， 2023 ， 43 （ 6 ）： 2339 - 2358 .

王龙悦，胡鹏飞，于彦雪，等 . 基于混合同步控制的构网型变流器不对称故障下暂态稳定分析［J］. 电力系统自动化， 2025 ， 49 （ 2 ）： 20 - 29 .

Wang Longyue ， Hu Pengfei ， Yu Yanxue ， et al . Transient stability analysis of hybrid-synchronization control based grid-forming converters under asymmetric faults ［J］. Automation of Electric Power Systems ， 2025 ， 49 （ 2 ）： 20 - 29 .

Rathnayake D B ， Akrami M ， Phurailatpam C ， et al . Grid forming inverter modeling， control， and applications ［J］. IEEE Access ， 2021 ， 9 ： 114781 - 114807 .

Fan B ， Liu T ， Zhao F Z ， et al . A review of current-limiting control of grid-forming inverters under symmetrical disturbances ［J］. IEEE Open Journal of Power Electronics ， 2022 ， 3 ： 955 - 969 .

Shen C ， Shen X ， Zhao B ， et al . Coordinated FRT control for paralleled grid-forming converters with enhanced transient stability and current control flexibility ［J］. IEEE Transactions on Industry Applications ， 2024 ， 60 （ 2 ）： 3653 - 3663 .

Pal A ， Pal D ， Panigrahi B K . A current saturation strategy for enhancing the low voltage ride-through capability of grid-forming inverters ［J］. IEEE Transactions on Circuits and Systems Ⅱ： Express Briefs ， 2023 ， 70 （ 3 ）： 1009 - 1013 .

夏向阳，赵晓悦，梁军，等 . 基于有功-无功联合控制的构网型变流器暂态稳定性提升方法［J］. 电力系统自动化， 2025 ， 49 （ 11 ）： 114 - 125 .

Xia Xiangyang ， Zhao Xiaoyue ， Liang Jun ， et al . Transient stability enhancement method for grid-forming converter based on joint control of active and reactive power ［J］. Automation of Electric Power Systems ， 2025 ， 49 （ 11 ）： 114 - 125 .

Huang L ， Wu C ， Zhou D ， et al . A power-angle-based adaptive overcurrent protection scheme for grid-forming inverter under large grid disturbances ［J］. IEEE Transactions on Industrial Electronics ， 2023 ， 70 （ 6 ）： 5927 - 5936 .

符杨，陈禹瑾，季亮，等 . 考虑功率解耦的构网型逆变器的低电压穿越控制策略［J］. 电力系统保护与控制， 2024 ， 52 （ 15 ）： 1 - 13 .

Fu Yang ， Chen Yujin ， Ji Liang ， et al . Low voltage ride-through control strategy of a grid-forming inverter considering power decoupling ［J］. Power System Protection and Control ， 2024 ， 52 （ 15 ）： 1 - 13 .

蒋涛，张永昌 . 不对称故障下基于模型预测控制和谐振控制器的构网型变流器故障穿越方法［J/OL］. 电工技术学报， 2025-11-17 . https：//doi.org/10.19595/j.cnki.1000-6753.tces.251571 https://doi.org/10.19595/j.cnki.1000-6753.tces.251571 .

Jiang Tao ， Zhang Yongchang . Fault ride-through method for grid-forming converters based on model predictive control and resonant control under asymmetrical fault ［J/OL］. Transactions of China Electrotechnical Society ， 2025-11-17 . https：//doi.org/10.19595/j.cnki.1000-6753.tces.251571 https://doi.org/10.19595/j.cnki.1000-6753.tces.251571 .

Wu H ， Wang X F . Small-signal modeling and controller parameters tuning of grid-forming VSCs with adaptive virtual impedance-based current limitation ［J］. IEEE Transactions on Power Electronics ， 2022 ， 37 （ 6 ）： 7185 - 7199 .

谢华，黄涛，徐晓春，等 . 构网控制目标下系统故障特征及保护性能［J］. 电力自动化设备， 2024 ， 44 （ 11 ）： 210 - 216 .

Xie Hua ， Huang Tao ， Xu Xiaochun ， et al . Fault characteristic and protection performance under grid-forming control objective ［J］. Electric Power Automation Equipment ， 2024 ， 44 （ 11 ）： 210 - 216 .

Rosso R ， Engelken S ， Liserre M . On the implementation of an FRT strategy for grid-forming converters under symmetrical and asymmetrical grid faults ［J］. IEEE Transactions on Industry Applications ， 2021 ， 57 （ 5 ）： 4385 - 4397 .

贾科，刘芸，毕天姝，等 . 基于自适应虚拟阻抗的构网型新能源电源不对称故障穿越控制［J］. 中国电机工程学报， 2025 ， 45 （ 8 ）： 2946 - 2955 .

Jia Ke ， Liu Yun ， Bi Tianshu ， et al . Asymmetric fault ride through of grid-forming control of renewable energy based on adaptive virtual impedance ［J］. Proceedings of the CSEE ， 2025 ， 45 （ 8 ）： 2946 - 2955 .

Chi S M ， Zhang R ， Zhang G G ， et al . Asymmetrical low-voltage ride-through control strategy based-on PBC with virtual voltage compensation for voltage-controlled VSG ［J］. IEEE Transactions on Industrial Electronics ， 2025 ， 72 （ 3 ）： 2551 - 2562 .

IEEE Std 2800-2022 IEEE standard for interconnection and interoperability of inverter-based resources （IBRs） interconnecting with associated transmission electric power systems ［S］．

EN 50549-2：2019/A1：2023 Requirements for generating plants to be connected in parallel with distribution networks — Part 2： connection to a MV distribution network — generating plants up to and including type B ［S］.

T/CES 243—2023 构网型储能系统并网技术规范［S］.

T/CES 243—2023 Technical specification for application of grid-forming energy storage system ［S］.

贾科，王鹤子，毕天姝，等 . 基于自适应虚拟阻感比的构网型变流器故障穿越控制方法［J］. 电网技术， 2026 ， 50 （ 4 ）： 1403 - 1413 .

Jia Ke ， Wang Hezi ， Bi Tianshu ， et al . Fault ride-through control method for grid-forming converter based on adaptive virtual resistance-to-inductance ratio ［J］. Power System Technology ， 2026 ， 50 （ 4 ）： 1403 - 1413 .

Maciver C ， Bell K ， Nedd M . An analysis of the August 9th 2019 GB transmission system frequency incident ［J］. Electric Power Systems Research ， 2021 ， 199 ： 107444 .

Jiao F S . Adaptive virtual impedance-based fault current limiting strategy for grid-forming inverters ［J］. CPSS Transactions on Power Electronics and Applications ， 2024 ， 9 （ 3 ）： 325 - 335 .

Azzouz M A ， Hooshyar A ， El-saadany E F . Resilience enhancement of microgrids with inverter-interfaced DGs by enabling faulty phase selection ［J］. IEEE Transactions on Smart Grid ， 2018 ， 9 （ 6 ）： 6578 - 6589 .

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