Q:

In this example, July has been chosen because in Colorado there are short-circuit faults, demand overload, line switching, capacitor switching, and lightning strikes as indicated in Table E8.1.1. The total number of customers is N _T = 40000.

Q:

Solution

The reliability indices are

SAIDI = (sum of the number of customer interruption durations)/(total number of affected customers) = 0.003 h/customer, where interruptions with 0 V are taken into account,

SAIFI = (sum of the number of customer interruptions)/(total number of affected customers) = 0.004 interruptions/customer, where interruptions with 0 V are taken into account,

where SARFI _%V is the number of specified short-duration rms variations per system customer (60 s aggregation). The notation %V ...