Protection study of a microgrid based on the 34-Bus IEEE distribution feeder

This paper proposes a protection scheme for a microgrid based on the 34-bus IEEE distribution feeder. The microgrid was modeled in the Alternative Transients Program (ATP) and was adapted to include distributed generation and on-grid and off-grid operation capability. Short-circuit simulations were carried out to assist the choice of a protection scheme that is able to secure sensitivity, selectivity, and coordination for faults inside and outside the microgrid in both on-grid and off-grid operation modes.