Transient Overcurrent Quantification Method of Grid-Forming Inverter Under Large Disturbances

Grid-forming inverters (GFM) are increasingly essential in future power systems with the growing penetration of renewable energy. However, the overcurrent problem of the grid-forming inverter under large disturbance has remained a focal point of research. Specifically, the overcurrent can be classif...

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Bibliographic Details
Published in:IEEE International Conference on Industrial Technology (Online) pp. 1 - 5
Main Authors: Cui, Boyuan, Huang, Liang, Loh, Poh Chiang, Blaabjerg, Frede
Format: Conference Proceeding
Language:English
Published: IEEE 26.03.2025
Subjects:
Accuracy
Differential equations
Grid forming
Grid-forming inverters
large disturbances
Power quality
Power systems
Renewable energy sources
Simulation
Steady-state
theoretical quantification
Transient analysis
transient overcurrent
ISSN:2643-2978
Online Access:Get full text
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Summary:Grid-forming inverters (GFM) are increasingly essential in future power systems with the growing penetration of renewable energy. However, the overcurrent problem of the grid-forming inverter under large disturbance has remained a focal point of research. Specifically, the overcurrent can be classified into two procedures: the transient overcurrent and the steady-state overcurrent. In terms of numerous papers, most of the existing articles tend to focus on the steady-state overcurrent and few of them touch the transient overcurrent procedure. Nevertheless, the transient overcurrent process is also worthy of attention. To fill this gap, this paper starts from the phase current perspective, quantifying the transient overcurrent through the solution of the differential equation under large disturbances including grid frequency drop, grid phase jump and grid voltage sag. Simulation results of the study system verify the accuracy of the theoretical quantifications of the transient overcurrent under large disturbances.
ISSN:2643-2978
DOI:10.1109/ICIT63637.2025.10965228