电力系统自动化2025，Vol.49Issue(7)：13-24,12.DOI:10.7500/AEPS20231225001
考虑阻尼影响的虚拟同步发电机暂态同步稳定性量化分析
Quantitative Analysis of Transient Synchronization Stability of Virtual Synchronous Generator Considering Damping Effect
摘要
Abstract
With the large-scale integration of renewable energy generators,the power system faces a severe risk of transient synchronization instability.The grid-forming converter controlled by the virtual synchronous generator(VSG)simulates the dynamic characteristics of the synchronous generator to achieve synchronization with the power grid,which has good frequency and voltage support ability.In order to accurately quantify the effects of virtual inertia and damping on the transient synchronization stability of VSG,this paper proposes a transient synchronization stability analysis method of VSG based on the iterative equal area criterion.Based on the principle of energy conservation,an iterative algorithm is designed to obtain the frequency-power angle distribution function of the converter under critical stability conditions.Thus,the effects of VSG inertia and the work done by the damping term on the acceleration and deceleration areas of the transient process are accurately quantified.By comparing the sizes of transient stability regions with different controller and grid parameters,the influence of parameters on the transient stability boundary is quantified.Finally,the MATLAB/Simulink simulation and the RT-LAB hardware-in-the-loop experiments are used to verify the effectiveness and superiority of the proposed stability analysis method.The conservatism of the proposed iterative equal area criterion is extremely low,and can realize the accurate and fast calculation of the transient stability boundary.关键词
构网型变流器/虚拟同步发电机/暂态同步稳定性/惯量/阻尼/迭代等面积法则Key words
grid-forming converter/virtual synchronous generator(VSG)/transient synchronization stability/inertia/damping/iterative equal area criterion引用本文复制引用
张静怡,田震,李锡林,黄萌,曹侃,查晓明..考虑阻尼影响的虚拟同步发电机暂态同步稳定性量化分析[J].电力系统自动化,2025,49(7):13-24,12.基金项目
国家电网有限公司科技项目(4000-202399378A-2-2-ZB). This work is supported by State Grid Corporation of China(No.4000-202399378A-2-2-ZB). （4000-202399378A-2-2-ZB）
