The role of VSG parameters in shaping small-signal SG dynamics
Ferdinand Geuss, Orcun Karaca, Mario Schweizer, Ognjen Stanojev
TL;DR
This paper develops a transfer function model for a system with VSG, SG, and load, analyzing how VSG parameters influence small-signal dynamics and stability trade-offs.
Contribution
It introduces a small-signal transfer function model that captures the impact of VSG parameters on system stability and dynamics.
Findings
VSG parameters significantly affect voltage and frequency stability.
Limited impact of damper-winding emulation on dynamics.
Trade-offs exist in selecting virtual inertia and governor lag.
Abstract
We derive a small-signal transfer function for a system comprising a virtual synchronous generator (VSG), a synchronous generator (SG), and a load, capturing voltage and frequency dynamics. Using this model, we analyze the sensitivity of SG dynamics to VSG parameters, highlighting trade-offs in choosing virtual inertia and governor lag, the limited effect of damper-winding emulation, and several others.
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Taxonomy
TopicsMicrogrid Control and Optimization · Power System Optimization and Stability · Chaos control and synchronization