Abstract: A non-transitory, machine-readable medium stores instructions that, when executed by a processor, cause the processor to receive historical average system interruption duration index (ASIDI) data and calculate (1) an average of a plurality of logarithm values based on a portion of the ASIDI data that is associated with a plurality of interruption days, (2) a standard deviation of the plurality of logarithm values, and (3) an event threshold day (ETD) threshold based on the average of the plurality of logarithm values and the standard deviation of the plurality of logarithm values. An impacted electrical grid portion within an electrical grid is identified based on the ETD threshold and current ASIDI data. Switchover of the impacted electrical grid portion to a feeder from a plurality of feeders is caused based on a criticality value associated with a system that is fed by the feeder.