Stability Analysis of Microgrid Islanding Transients Based on Interconnected Dissipative Subsystems

To ensure successful islanding of microgrids after a fault has occurred, the transient stability should be analyzed under set expected operating conditions during design and operation microgrids. Transient analysis is conventionally performed with time-domain which computationally expensive does not quantify margin. Energy-based methodologies can determine margin, however existing require significant simplifications to applied microgrid model. The energy-based methodology proposed in this paper enables high-dimension nonlinear systems quantification margin within reasonable time. performance validated by analyzing case study comparing results state-of-the-art literature. indicate that significantly lower computational burden similar accuracy compared methodologies. able improve probability stable from 74% up 94% when only optimizing design, 100% control actions.