Non-minimum-phase zeros in the grid Jacobian explain both voltage and synchronization instability in weak grids, with the short-circuit ratio as a special case of the proposed NMP-Z factor at rated operating point.
Real-world subsynchronous oscillation events in power grids with high penetrations of inverter-based resources,
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Revisiting Voltage and Synchronization Stability Analysis in Converter-Integrated Weak Grids: Insights from Non-Minimum-Phase Zeros
Non-minimum-phase zeros in the grid Jacobian explain both voltage and synchronization instability in weak grids, with the short-circuit ratio as a special case of the proposed NMP-Z factor at rated operating point.