A Novel Model Predictive Control for Stability Improvement of Small Scaled Zero-inertia Multiple DGs Micro-grid

A zero-inertia micro-grid is a power system consisting of multiple renewable energy sources and storage systems without the presence conventional synchronous generators. In such system, large variation load or source sides during islanded mode operation extremely degrades micro-grid's voltage frequency stability. This study presents virtual inertia-based predictive control strategy for small-scale distributed generators (DGs) micro-grid. mode, Voltage Model Predictive Control (VMPC) was implemented to maintain However, instabilities in may rise at Point Common Coupling (PCC) due variations both sides. Therefore, proposed inertia loop calculates amount active be delivered absorbed by each DG, its effect reflected estimated d current component VMPC, thus providing better regulation. grid-connected Direct Power (DPMPC) manage flow between DG utility grid. The approach also enables plug play characteristics. performance investigated verified using PSCAD/EMTDC software platform.