Marcus Hutter: Difference between revisions
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The '''System Average Interruption Duration Index (SAIDI)'''<Ref>{{cite web | |||
|url =http://www.ee.iastate.edu/~jdm/ee653/DistributionReliabilityPredictive.ppt | |||
|title = Distribution System Reliability Evaluation | |||
|first = Sree | |||
|last = Yeddanapudi | |||
|publisher= Iowa State University | |||
|accessdate = 18 June 2011 | |||
}}</ref> 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: | |||
<math> | |||
\mbox{SAIDI} = \frac{\sum{U_i N_i}}{\sum{N_i}} | |||
</math> | |||
where <math>N_i</math> is the number of customers and <math>U_i</math> is the annual outage time for location <math>i</math>. In other words, | |||
<math>\mbox{SAIDI} = \frac{\mbox{sum of all customer interruption durations}}{\mbox{total number of customers served}}</math> | |||
SAIDI is measured in units of time, often minutes or hours. It is usually measured over the course of a year, and according to IEEE Standard 1366-1998 the median value for North American utilities is approximately 1.50 hours. | |||
==See also== | |||
*[[SAIFI]] | |||
*[[CAIDI]] | |||
*[[CAIFI]] | |||
*[[MAIFI]] | |||
*[[ASAI]] | |||
*[[ASUI]] | |||
==References== | |||
{{Reflist}} | |||
{{DEFAULTSORT:Saidi}} | |||
[[Category:Electric power]] | |||
Revision as of 07:34, 1 February 2014
The System Average Interruption Duration Index (SAIDI)[1] 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:
where is the number of customers and is the annual outage time for location . In other words,
SAIDI is measured in units of time, often minutes or hours. It is usually measured over the course of a year, and according to IEEE Standard 1366-1998 the median value for North American utilities is approximately 1.50 hours.
See also
References
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