采用自适应功率与电压指令的构网型变流器故障穿越策略

卜鸣; 郑涛; 杨畅; 陈治铃

doi:10.7652/xjtuxb202503014

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采用自适应功率与电压指令的构网型变流器故障穿越策略

更新时间：2026-01-06

- 采用自适应功率与电压指令的构网型变流器故障穿越策略
- Adaptive Power and Voltage Command Based Grid-Connected Inverter Fault Ride-Through Control Strategy
- 西安交通大学学报 2025年59卷第3期页码：147-159
- 作者机构：
  
  西安交通大学电气工程学院， 710049，西安
- 作者简介：
  
  卜鸣（2000—），女，硕士生；
  郑涛（通信作者），男，副教授，博士生导师。
- 基金信息：
  
  国家自然科学基金资助项目(U23B20112);陕西省自然科学基金资助项目(2024JC-YBMS-420)
- DOI：10.7652/xjtuxb202503014
  中图分类号： TM464
- 收稿：2024-05-21，
  
  网络首发：2024-12-31，
  
  纸质出版：2025-03-10
- 稿件说明：
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卜鸣, 郑涛, 杨畅, 等. 采用自适应功率与电压指令的构网型变流器故障穿越策略[J]. 西安交通大学学报, 2025,59(3):147-159.

BU Ming, ZHENG Tao, YANG Chang, et al. Adaptive Power and Voltage Command Based Grid-Connected Inverter Fault Ride-Through Control Strategy[J]. Journal of Xi’an Jiaotong University, 2025, 59(3): 147-159.
卜鸣, 郑涛, 杨畅, 等. 采用自适应功率与电压指令的构网型变流器故障穿越策略[J]. 西安交通大学学报, 2025,59(3):147-159. DOI： 10.7652/xjtuxb202503014.

BU Ming, ZHENG Tao, YANG Chang, et al. Adaptive Power and Voltage Command Based Grid-Connected Inverter Fault Ride-Through Control Strategy[J]. Journal of Xi’an Jiaotong University, 2025, 59(3): 147-159. DOI： 10.7652/xjtuxb202503014.

摘要

为了解决构网型变流器在电网电压跌落情况下出现的过电流以及暂态失稳问题，提出了一种基于功率与电压指令自适应调整的故障穿越控制策略。首先，建立了以虚拟同步发电机控制为基础的构网型变流器模型，在此基础上分析电网电压跌落时构网型变流器的暂态失稳机理以及过电流产生原因。然后，提出了一种基于功率、电压指令自适应调整的控制策略，通过动态调整有功功率参考值和电压参考值来提高功角稳定性，同时限制故障期间电流稳态分量。此外，引入动态虚拟阻抗限制故障开始和清除期间的暂态冲击电流。最后，通过仿真对所提故障穿越控制策略的有效性进行验证。结果表明：所提控制策略不受电压跌落程度和故障持续时间的影响，能够将故障期间电流幅值限制在1.5倍额定值以下，将故障电流稳态分量幅值限制在额定值的1.2倍，同时保持系统稳定。

Abstract

To address the issues of overcurrent and transient instability in grid-forming converters during grid voltage drops

a fault ride-through control strategy based on adaptive adjustment of power and voltage commands is proposed. Firstly

a grid-connected inverter model based on virtual synchronous generator control is established. On this basis

the transient instability mechanism of grid-connected inverters during grid voltage drops and the causes of overcurrent are analyzed. Subsequently

a control strategy based on adaptive adjustment of power and voltage commands is proposed. By dynamically adjusting the active power reference value and voltage reference value

the power angle stability is enhanced

while limiting the steady-state component of current during faults. Additionally

dynamic virtual impedance is introduced to limit transient surge currents during fault inception and clearance. Finally

the effectiveness of the proposed fault ride-through control strategy is verified through simulations. The results demonstrate that this control strategy can limit the fault current magnitude to below 1.5 times the rated value and the steady-state component of fault current to 1.2 times the rated value

while maintaining system stability regardless of the extent of voltage drop and duration of the fault.

关键词

Keywords

references

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