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The System Average Interruption Frequency Index (SAIFI)[1] 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 as

\mbox{SAIFI} = \frac{\sum{\lambda_i N_i}}{N_T}

where \lambda_i is the failure rate, N_i is the number of customers for location i and N_T is the total number of customers served. In other words,

\mbox{SAIFI} = \frac{\mbox{total number of customer interruptions}}{\mbox{total number of customers served}}

SAIFI is measured in units of interruptions per customer. 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 1.10 interruptions per customer.

References[edit]

  1. ^ Yeddanapudi, Sree. "Distribution System Reliability Evaluation". Iowa State University. Retrieved 18 June 2011. 

See also[edit]


Original courtesy of Wikipedia: http://en.wikipedia.org/wiki/SAIFI — Please support Wikipedia.
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Free press journal

Free press journal
Sat, 13 Dec 2014 19:56:15 -0800

While Kumar, of Uttamnagar, eased through from Group O with two comfortable back-to-back wins, Saifi, of Malviyanagar, who earlier lost to Kumar, snatched a crucial 5-2 win over Abhishek Bajaj to make it from the double elimination round. Saifi beat ...
 
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Wed, 10 Dec 2014 18:37:30 -0800

Wrothams Windsor, West Africa's leading real estate consultancy, has once again launched the development of a new estate based in Beirut, Lebanon called Saifi Crown. To be launched at an exclusive drinks and canapés event at the Blu Cabana Members' ...
 
iloubnan.info
Fri, 28 Nov 2014 04:22:30 -0800

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iloubnan.info
Sat, 29 Nov 2014 02:18:45 -0800

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Tue, 16 Dec 2014 00:26:27 -0800

CNN's Sophia Saifi reported from Islamabad, along with journalists Saleem Mehsud, Zahir Shah and Adeel Raja. CNN's Greg Botelho wrote this story from Atlanta. CNN's Paul Armstrong, Tim Lister, Jim Sciutto, Jason Hanna, Christiane Amanpour, Mick ...

Daily Mail

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Sat, 20 Dec 2014 17:41:15 -0800

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New York Times

New York Times
Wed, 26 Nov 2014 16:22:17 -0800

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