Dynamics of grid connected PV inverters

Abstract

Power failure of electric network identifies the hazardous aspects of inverter grid interfacing to linesmen maintaining power lines. Dynamics of grid-connected first order system indicates the necessity for an optimum tripping mechanism for an inverter feeding diversity of locally connected loads are analysed. The aim is to sustain the safety of linesmen by isolating the static inverter within 2 seconds of a mains failure event, as drafted in the IEEE guidelines standard.