电力系统保护与控制2025，Vol.53Issue(4)：59-71,13.DOI:10.19783/j.cnki.pspc.240661
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
A transient stability enhancement strategy for grid-forming inverters based on integral feedback of angular frequency deviation
摘要
Abstract
To address the transient instability issue of grid-forming(GFM)inverters during short-circuit faults,which can lose their equilibrium point,this paper proposes a transient stability enhancement strategy based on integral feedback of angular frequency deviation.First,a transient stability analysis model of a GFM inverter is established,considering the current limitation and integral feedback branch of angular frequency deviation.The influence mechanism of the integral feedback coefficient of angular frequency deviation on the transient stability of GFM inverters is analyzed.Next,a design method for the integral feedback coefficient is proposed,one which can ensure that the system maintains a stable equilibrium point during faults while achieving fault ride-through by keeping the acceleration area no greater than the deceleration area.Moreover,the proposed method does not require obtaining information such as system power angle,line impedance,and depth of grid voltage sag.Finally,the effectiveness of the proposed strategy is verified through hardware-in-the-loop(HIL)experiments on the Starsim platform.关键词
构网型逆变器/暂态稳定性/角频率偏差反馈/故障穿越/相平面图Key words
grid-forming inverters/transient stability/feedback of angular frequency deviation/fault ride-through/phase plane diagram引用本文复制引用
周步祥,丁豪,周毅,张俨,邱一苇,臧天磊..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[J].电力系统保护与控制,2025,53(4):59-71,13.基金项目
This work is supported by the National Natural Science Foundation of China(No.52307126). 国家自然科学基金项目资助(52307126) （No.52307126）
四川省科技计划项目资助(2024NSFSC0870) （2024NSFSC0870）
