Sensitivity Based Voltage Support Strategy to Enhance Dynamic Stability of Islanded Microgrid

This paper presents a new voltage support (VS) strategy for photovoltaic (PV) systems based on sensitivity analysis to enhance the dynamic stability (DVS) of islanded microgrids (MGs). Every network contains different characteristics. In particular, MGs have unique features compared utility grids such as high resistance reactance ratio (R/X). Consequently, injection both active and reactive current is likely improve DVS MG. Therefore, instead engaging entire capacity which performed in conventional strategy, injected proposed strategy. On contrary, without considering fact that each distinctive characteristics, other strategies with provide fixed are uniform all networks. To convey VS subject used As consequence, unlike strategies, provides combination every network. The concept derivation clearly described. Network carried out determine coefficients. effectiveness theoretically demonstrated also strategies. Case studies two MGs. results show capable enhancing by mitigating possible instability, restoring faster than