CAIFI

CAIFI: The Customer Average Interruption Frequency Index (CAIFI)^[1] is a popular index used in electrical reliability analysis.^[2] It is designed to show trends in customers interrupted and helps to show the number of customers affected out of the whole customer base.

$\mbox{CAIFI} = \frac{\mbox{total number of customer interruptions}}{\mbox{total number of customers who had at least one interruption}}$

References

^ Yeddanapudi, Sree. "Distribution System Reliability Evaluation". Iowa State University. http://www.ee.iastate.edu/~jdm/ee653/DistributionReliabilityPredictive.ppt. Retrieved 18 June 2011.

^ Power Distribution Planning Reference Book, H. Lee Willis, published by CRC Press, 2004, page 112

See also

SAIDI

CAIDI

MAIFI

SAIFI

Categories:
Electric power

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SAIDI — The System Average Interruption Duration Index (SAIDI) is commonly used as a reliability indicator by electric power utilities. SAIDI is the average outage duration for each customer served, and is calculated as:mbox{SAIDI} = frac{mbox{sum of all … Wikipedia
SAIFI — The System Average Interruption Frequency Index (SAIFI) is commonly used as a reliability indicator by electric power utilities. SAIFI is the average number of interruptions that a customer would experience, and is calculated asmbox{SAIFI} =… … Wikipedia
CAIDI — The Customer Average Interruption Duration Index (CAIDI) is a reliability index commonly used by electric power utilities. It is related to SAIDI and SAIFI, and is calculated asmbox{CAIDI} = frac{mbox{sum of all customer interruption… … Wikipedia
MAIFI — The Momentary Average Interruption Frequency Index (MAIFI) is a reliability indicator used by electric power utilities. MAIFI is the average number of momentary interruptions that a customer would experience during a given period (typically a… … Wikipedia

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