电力系统保护与控制2026，Vol.54Issue(10)：13-23,11.DOI:10.19783/j.cnki.pspc.251248
一种考虑电流限制的构网型变流器稳定性增强策略
A stability enhancement strategy for grid-forming converters considering current limitation
摘要
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
构网型变流器/限流/自适应虚拟阻抗/暂态稳定性/虚拟功率角Key words
grid-forming converter/current limiting/adaptive virtual impedance/transient stability/virtual power angle引用本文复制引用
赵铁英,王浩然,黄志远,祁昱昂,田培建,杨浩然..一种考虑电流限制的构网型变流器稳定性增强策略[J].电力系统保护与控制,2026,54(10):13-23,11.基金项目
This work is supported by the Natural Science Foundation of Henan Province(No.252300421329). 河南省自然科学基金项目资助(252300421329) （No.252300421329）
国家自然科学基金项目资助(U1804143) （U1804143）
