LI Mingfei,WU Zaijun,QUAN Xiangjun,et al.Transient Synchronization Stability Analysis of Grid-forming Grid-connected Inverter Considering Damping Characteristics[J].Automation of Electric Power Systems,2023,47(15):198-207.
LI Mingfei,WU Zaijun,QUAN Xiangjun,et al.Transient Synchronization Stability Analysis of Grid-forming Grid-connected Inverter Considering Damping Characteristics[J].Automation of Electric Power Systems,2023,47(15):198-207. DOI: 10.7500/AEPS20221120005.
The grid-forming grid-connected inverter (GFM-GCI) can provide the voltage and frequency support for power grids
which is beneficial to grid stability improvement. Firstly
aiming at the transient synchronization stability problem of GFM-GCI
the influence mechanism of GFM-GCI control parameters on the transient synchronization stability is qualitatively analyzed from the perspective of energy by the equal area criterion considering the damping characteristics. Secondly
the explicit analytical solution of the nonlinear second-order differential equation of the power angle is obtained by using the multi-scale method in perturbation theory
and the influence of control parameters on the GFM-GCI transient synchronization stability is quantitatively analyzed. Then
based on the analytical solution and transient synchronization stability boundary
a control parameter design method for GFM-GCI transient synchronization stability is presented. The proposed control parameter design method is less conservative than the existing traditional transient analysis methods. Finally
the validity of the theoretical analysis
the analytical model and the proposed control parameters design method is verified by simulation and experiment.
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