Resiliency-Oriented Optimization of Critical Parameters in Multi Inverter-Fed Distributed Generation Systems

In the modern power grid, with growing penetration of renewable and distributed energy systems, use parallel inverters has significantly increased. It is essential to achieve stable operation reasonable sharing between these inverters. Droop controllers are commonly used control in an inverter-based microgrid. this paper, a small signal model droop secondary loop internal model-based voltage current controller proposed improve stability, resiliency, generation systems. The system’s nonlinear dynamic equations derived by incorporating appropriate accurate models network, load, phase locked filters. obtained then trimmed linearized around its operating point find state space representation. Moreover, we optimize critical parameters model, which found using eigenvalue analysis, Grey Wolf optimization technique. Through time-domain simulations, show that method improves characteristics.