Abstract:
In this paper, a modified protection scheme is
proposed for connecting distributed generation to the utility grid.
This is based on Adaptive Overcurrent Protection (AOP) scheme
proposed in literature but is modified to suit all the possible
needs of a microgrid. The main objective of this algorithm is to
protect the entire system (including distributed generation)
without modifying the existing protection scheme of the main
grid. The algorithm is developed based on the data collected by
the Microgrid Central Controller (MCC) from the relays. The
proposed scheme is tested taking into consideration all possible
scenarios of operation as well as faults that can occur in the
microgrid.
