全球能源互联网2025，Vol.8Issue(6)：713-720,8.DOI:10.19705/j.cnki.issn2096-5125.20250209
计及限流保护的构网型逆变器暂态稳定性分析与控制设计
Transient Stability Analysis and Control Design of the Grid-forming Inverter Considering Current Limiting Protection
摘要
Abstract
With the increasing penetration of renewable energy,the grid-forming(GFM)inverters have attracted more and more attention.However,different from the traditional synchronous generator,the GFM inverter based on semiconductor devices has limited overcurrent capacity.In order to ensure its safe operation,it is necessary to limit its current.Based on the d-axis priority current limiter,the influence of the GFM inverter current limiting protection on its transient stability is analyzed,the conditions for the conversion of the normal mode and the current limiting mode of the GFM inverter are proposed,and the stability regions of the inverter in different modes are divided.Aiming at the problem that it is difficult for the GFM inverter to switch from the current limiting mode to the normal mode in natural state,a control strategy based on PI amplitude limiting and virtual resistance(VR)is proposed to improve the voltage source characteristics of the GFM inverter.Finally,the simulation on MATLAB/Simulink platform verifies the effectiveness of the above theory.关键词
构网型逆变器/限流/模式转换/电流饱和Key words
grid-forming(GFM)inverter/current limiting/mode switching/current saturation分类
信息技术与安全科学引用本文复制引用
孟星,李杰,况波,任溢杰,李明浩,王学华..计及限流保护的构网型逆变器暂态稳定性分析与控制设计[J].全球能源互联网,2025,8(6):713-720,8.基金项目
中国电力建设有限公司科技项目(23-KJXNY-03).Science and Technology Foundation of China Power Construction Group Co.,Ltd.(23-KJXNY-03). （23-KJXNY-03）
