Overcurrent Suppression Strategies for Grid-Forming Converters under Power Grid Fault

SHI Zhen; CHEN Laijun; SU Xiaoling; ZHAO Zhengkui; MEI Shengwei

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Overcurrent Suppression Strategies for Grid-Forming Converters under Power Grid Fault

更新时间：2025-04-18

- Overcurrent Suppression Strategies for Grid-Forming Converters under Power Grid Fault
- Moren Journal (2025)
- 作者机构：
  
  1.新能源电力系统智慧运行教育部重点实验室(青海大学能源与电气工程学院),青海省西宁市810016
  2.清华大学电机工程与应用电子技术系,北京市北京市100084
- 作者简介：
- 基金信息：
  
  National Natural Science Foundation of China(52167022);Natural Science Foundation of Qinghai(2022-ZJ-935Q)
- DOI：
  CLC：
- Received：05 July 2024，
  
  Revised：28 July 2024，
  
  Accepted：31 July 2024，
- 稿件说明：
移动端阅览
SHI Zhen, CHEN Laijun, SU Xiaoling, et al. Overcurrent Suppression Strategies for Grid-Forming Converters under Power Grid Fault[J/OL]. Moren journal, 2025.
DOI：

SHI Zhen, CHEN Laijun, SU Xiaoling, et al. Overcurrent Suppression Strategies for Grid-Forming Converters under Power Grid Fault[J/OL]. Moren journal, 2025. DOI：

摘要

构网型换流器具有电压源特性，可主动支撑电网。但在电网故障情况下，为保持其输出电压的稳定，极易导致换流器过电流而触发过流保护，甚至损坏电力电子器件。为此，基于故障电流动态响应机理，建立了故障电流解析表达式，该故障电流解析表达式由随时间衰减的暂态电流分量、随时间周期性变化的稳态电流分量组成，根据不同分量特点，分析其关键影响参数，提出一种分别对针对过电流稳态分量和暂态分量进行抑制的构网型换流器过电流抑制策略。仿真和实验结果表明，所提策略可使故障期间构网型换流器保留电压源特性，主动支撑电网电压，同时抑制稳态过电流和暂态过电流，使电流始终保持在安全阈值之内，并保持功角稳定。

Abstract

Grid-forming converters possess the characteristics of a voltage source and can actively support the power grid. However

in the event of a power grid fault

in order to maintain the stability of its output voltage

the converter is highly susceptible to overcurrent

which can trigger overcurrent protection and potentially damage power electronic components. To address this problem

based on the dynamic response mechanism of fault current

a analytical expression for fault current has been established. This analytical expression of fault current is composed of a transient current component that decays over time and a steady-state current component that varies periodically with time. Based on the characteristics of different components

key influencing parameters are analyzed

and a grid-forming converter overcurrent suppression strategy is proposed

which targets the suppression of both the steady-state and transient components of the overcurrent. Simulation and experimental results demonstrate that the proposed strategy allows the grid-forming converter to retain its voltage source characteristics during fault periods

actively support the grid voltage

and simultaneously suppress both steady-state and transient overcurrents

ensuring that the current remains within safe thresholds and maintaining the stability of the power angle.

关键词

Keywords

references

刘瀚琛 , 王冲 , 鞠平 . 双碳背景下综合能源电力系统弹性分析与提升研究综述 [J ] . 电气工程学报 , 2023 , 18 ( 2 ): 108 - 124 .

LIU Hanchen , WANG Chong , JU Ping . Review on Resilience Analysis and Enhancement of Integrated Energy Power Systems Considering Dual Carbon Goal [J ] . Journal of Electrical Engineering , 2023 , 18 ( 2 ): 108 - 124 .

谢小荣 , 贺静波 , 毛航银等 . “双高”电力系统稳定性的新问题及分类探讨 [J ] . 中国电机工程学报 , 2021 , 41 ( 02 ): 461 - 475 .

Xie Xiaorong , He Jingbo , Mao Hangyin ， et al . New Issues and Classification of Power System Stability With High Shares of Renewables and Power Electronics [J ] . Proceedings of the CSEE , 2021 , 41 ( 02 ): 461 - 475 . (in Chinese) .

张智刚 , 康重庆 . 碳中和目标下构建新型电力系统的挑战与展望 [J ] . 中国电机工程学报 , 2022 , 42 ( 08 ): 2806 - 2819 .

Zhang Zhigang , Kang Chongqing . Challenges and Prospects for Constructing the New-type Power System Towards a Carbon Neutrality Future [J ] . Proceedings of the CSEE , 2022 , 42 ( 08 ): 2806 - 2819 . (in Chinese) .

许诘翊 , 刘威 , 刘树等 . 电力系统变流器构网控制技术的现状与发展趋势 [J ] . 电网技术 , 2022 , 46 ( 09 ): 3586 - 3595 .

Xu Jieyi , Liu Wei , Liu Shu ， et al . Current State and Development Trends of Power System Converter Grid-forming Control Technology [J ] . Power System Technology , 2022 , 46 ( 09 ): 3586 - 3595 . (in Chinese) .

罗家林 , 陈超 , 黄梅 , 等 . 弱电网矿区下构网型储能控制技术研究 [J ] . 高压电器 , 2023 , 59 ( 07 ): 95 - 103 .

LUOJialin ， CHEN Chao ， HUANG Mei ， et al . Research on Grid⁃forming Energy Storage Control Technology in Weak

Network Mining Area [J ] . High Voltage Apparatus , 2023 , 59 ( 07 ): 95 - 103 . (in Chinese) .

李建林 , 丁子洋 , 游洪灏 , 等 . 构网型储能支撑新型电力系统稳定运行研究 [J ] . 高压电器 , 2023 , 59 ( 07 ): 1 - 11 .

LI Jianlin ， DING Ziyang ， YOU Honghao ， et al . Research on Stable Operation of New Power System Supported by

Grid⁃forming Energy Storage System [J ] . High Voltage Apparatus , 2023 , 59 ( 07 ): 1 - 11 . (in Chinese) .

中华人民共和国国家质量监督检验检疫总局，中国国家标准化管理委员会．光伏发电站接入电力系统技术规 GB/T19964-2012 [S ] ．北京：中国标准出版社， 2013 .

李奕杰 , 陈良亮 , 孔庆朝 , 刘鸿鹏 . 新型耦合电感阻抗源逆变器应力简化分析方法 [J ] . 电气工程学报 , 2022 , 17 ( 3 ): 138 - 146 .

LI Yijie , CHEN Liangliang , KONG Qingchao , LIU Hongpeng . A Simplified Stress Analysis Method for Coupled-inductor Impedance-source Inverters [J ] . Journal of Electrical Engineering , 2022 , 17 ( 3 ): 138 - 146 .

张长春 , 赵尚 , 杨弘诚 , 等 . 光伏并网逆变器内部短路故障耐受性能试验研究 [J ] . 高压电器 , 2022 , 58 ( 07 ): 28 - 33 .

ZHANGChangchun ， ZHAO Shang ， YANG Hongcheng ， et al . Research on Withstand Performance Test of Internal Short Circuit Fault of Photovoltaic Grid Connected Inverter [J ] . High Voltage Apparatus , 2022 , 58 ( 07 ): 28 - 33 . (in Chinese) .

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 ( 06 ): 2339 - 2359 .

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 ( 06 ): 2339 - 2359 . (in Chinese) .

王闰南 , 谢帆 , 张波 . 基于神经网络方法的峰值电流控制Boost变换器数据驱动建模 [J ] . 电气工程学报 , 2022 , 17 ( 2 ): 142 - 150 .

WANG Runnan , XIE Fan , ZHANG Bo . A Data-driven Model of Peak Current Control Boost Converter Based on Neural Network Method [J ] . Journal of Electrical Engineering , 2022 , 17 ( 2 ): 142 - 150 .

董广凯 , 黄嵩 , 董佳林 , 等 . 定功率跟踪控制的光伏并网低电压穿越策略 [J ] . 高压电器 , 2023 , 59 ( 03 ): 93 - 98+107 .

DONGGuangkai ， HUANG Song ， DONG Jialin ， et al . LowVoltage Ride⁃through Strategy of Grid⁃connected Photovoltaic Generation with Constant Power Tracking Control [J ] . High Voltage Apparatus , 2023 , 59 ( 03 ): 93 - 98+107 . (in Chinese) .

Fan B , Liu T , Zhao F , 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 .

Wu H , Wang X . Design-oriented transient stability analysis of grid-connected converters with power synchronization control [J ] . IEEE Transactions on Industrial Electronics , 2019 , 66 ( 8 ): 6473 - 6482 .

E. Rokrok , T. Qoria , A. Bruyere , B. Francois , and X. Guillaud , “ Tran-sient stability assessment and enhancement of grid-forming converters embedding current reference saturation as current limiting strategy ,” IEEE Trans. Power Syst. , vol. 37 , no. 2 , pp. 1519 – 1531 , Mar. 2022 .

Zhang H , Xiang W , Lin W , et al . Grid forming converters in renewable energy sources dominated power grid: control strategy,stability, application, and challenges [J ] . Journal of modern power systems and clean energy , 2021 , 9 ( 6 ): 1239 - 1256 .

陈天一 , 陈来军 , 郑天文等 . 基于模式平滑切换的虚拟同步发电机低电压穿越控制方法 [J ] . 电网技术 , 2016 , 40 ( 07 ): 2134 - 2140 .

ChenTianyi , Chen Laijun , Zheng Tianwen ， et al . LVRT Control Method of Virtual Synchronous Generator Based on Mode Smooth Switching [J ] . Power System Technology , 2016 , 40 ( 07 ): 2134 - 2140 . (in Chinese) .

SHUAI Z K , HUANG W , SHEN C , et al . Characteristics and restrain- ing method of fast transient inrush fault currents in synchronverters [J ] . IEEE Transactions on Industrial Electronics , 2017 , 64 ( 9 ): 7487 - 7497 .

范宸珲 , 秦晓辉 , 齐磊 , 等 . 构网型下垂控制中虚拟阻抗的作用、改进及研究前景分析 [J/OL ] . 电网技术 , 1 - 17 . https://doi.org/10.13335/j.1000-3673.pst.2024.0189 https://doi.org/10.13335/j.1000-3673.pst.2024.0189 .

FAN Chenhui , QIN Xiaohui , QI Lei ， et al . Analysis of the Role, Improvement, and Research Prospects of Virtual Impedance in Grid-forming Droop Control [J/OL ] . Power System Technology , 1 - 17 . https://doi.org/10.13335/j.1000-3673.pst.2024.0189. https://doi.org/10.13335/j.1000-3673.pst.2024.0189. (in Chinese) .

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 , 2022 , 37 ( 6 ): 7185 - 7199 .

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/OL ] . 中国电机工程学报 , 1 - 11 . http://kns.cnki.net/kcms/detail/11.2107.TM.20240307.1048.002.html http://kns.cnki.net/kcms/detail/11.2107.TM.20240307.1048.002.html .

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/OL ] . Proceedings of the CSEE , 1 - 11 . http://kns.cnki.net/kcms/detail/11.2107.TM.20240307.1048.002.html. http://kns.cnki.net/kcms/detail/11.2107.TM.20240307.1048.002.html. (in Chinese) .

Y. Wang , Y. Kuang and Q. Xu , " A Current-Limiting Scheme for Voltage-Controlled Inverter Using Instantaneous Current to Generate Virtual Impedance ," in IEEE Journal on Emerging and Selected Topics in Circuits and Systems , vol. 13 , no. 2 , pp. 524 - 535 , June 2023

尚磊 , 胡家兵 , 袁小明等 . 电网对称故障下虚拟同步发电机建模与改进控制 [J ] . 中国电机工程学报 , 2017 , 37 ( 02 ): 403 - 412 .

SHANG Lei , HU Jiabing , YUAN Xiaoming , et al . Modeling and Improved Control of Virtual Synchronous Generators Under Symmetrical Faults of Grid [J ] . Proceedings of the CSEE , 2017 , 37 ( 02 ): 403 - 412 . (in Chinese) .

杜毅 , 孙华东 , 郑超 . 系统强度支撑型可塑变流器（1）—暂态电流安全及电磁暂态验证 [J/OL ] . 中国电机工程学报 , 1 - 14 . http://kns.cnki.net/kcms/detail/11.2107.TM.20231026.0919.002.html http://kns.cnki.net/kcms/detail/11.2107.TM.20231026.0919.002.html .

DU Yi , SUN Huadong , ZHENG Chao . System Strength Supported Flexible Converter (I)--Transient Current Safety and Electromagnetic Transient Verification [J/OL ] . Proceedings of the CSEE , 1 - 14 . http://kns.cnki.net/kcms/detail/11.2107.TM.20231026.0919.002.html. http://kns.cnki.net/kcms/detail/11.2107.TM.20231026.0919.002.html. (in Chinese) .

高长伟 , 黄翀阳 , 郑伟强等 . 虚拟阻抗制动可再生能源机组低电压穿越控制 [J ] . 电力系统保护与控制 , 2023 , 51 ( 10 ): 142 - 152 .

Gao Changwei , Huang Chongyang , Zheng Weiqiang ， et al . Low voltage ride-through control of a renewable energy unit with virtual impedance braking [J ] . Power System Protection and Control , 2023 , 51 ( 10 ): 142 - 152 . (in Chinese) .

王盼宝 , 王鹏 , 李珅光 , 等 . 电网故障下构网型逆变器动态限流控制策略 [J ] . 高电压技术 , 2022 , 48 ( 10 ): 3829 - 3837 .

WANG Panbao , WANG Peng , LI Shenguang , et al . Dynamic Current-limiting Control Strategy of Grid-forming Inverter Under Grid Faults [J ] . High Voltage Engineering , 2022 , 48 ( 10 ): 3829 - 3837 . (in Chinese) .

张余余 , 赵晋斌 , 李芬 , 等 . 基于功角动态补偿的VSG故障穿越方法研究 [J ] . 电网技术 , 2021 , 45 ( 09 ): 3667 - 3673 .

ZHANG Yuyu , ZHAO Jinbin , LI Fen , et al . VSG Fault Crossing Method Based on Dynamic Compensation of Power Angle [J ] . Power System Technology , 2021 , 45 ( 09 ): 3667 - 3673 . (in Chinese) .

江世明 , 唐杰 . 基于暂态阻尼增强的改进VSG控制策略 [J ] . 电力系统保护与控制 , 2023 , 51 ( 19 ): 144 - 154 .

JIANG Shiming , TANG Jie . Improved VSG control strategy based on transient damping enhancement [J ] . Power System Protection and Control , 2023 , 51 ( 19 ): 144 - 154 . (in Chinese) .

A. D. Paquette ， D. M. Divan ． Virtual impedance current limiting for inverters in microgrids with synchronous generators [J ] ． IEEE Transactions on Industry Applications ， 2015 ， 51 ( 2 )： 1630 – 1638 ．

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