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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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2872 news items

The Daily Star

The Daily Star
Sun, 17 May 2015 14:32:17 -0700

Saifi Village, located just opposite Gemmayzeh, is home to various boutiques, art galleries, fashion designers, craftsmen, home decorators, wellness centers and cafes, making it a small artistic hub in the center of town. “The idea [behind the market ...
 
GlobeNewswire (press release)
Fri, 29 May 2015 05:56:15 -0700

With the influence of natural disasters the system average interruption frequency index (SAIFI) per customer decreased from 0.33 to 0.32. At the end of February this year, the Board of Lietuvos Energija approved the concept of activity chain purifying ...

The Daily Star

The Daily Star
Tue, 26 May 2015 14:39:54 -0700

Solidere was also able to generate net profits of $4.3 million from the sales of residential apartments in Saifi and Mena al-Hosn areas. Revenues from rents rose by 12 percent to $61.5 million in 2014 despite the facilities made by the companies to ...

The Hindu

The Hindu
Wed, 27 May 2015 07:37:30 -0700

Sakina Saifi, 53, was plagued by back and knee pain till she signed up. The aches and pains are a thing of the past now. She has also lost stubborn weight that she was unable to shake off before. Sakina did not stop with herself. Her older sister 59 ...

Wichita State News

Wichita State News
Mon, 11 May 2015 08:45:00 -0700

The WSU team, dubbed “NeoZealot,” comprises team leader Utkarsh Ranjan, a graduate student in industrial engineering, and Mohd Wamiq Saifi, a master's student at Indian Institute of Technology, Kanpur, India. Ranjan and Saifi studied together at G.B. ...

NJ.com

NJ.com
Fri, 22 May 2015 09:02:15 -0700

1) Kylie Accardi 9 2) Leah Saifi 10. 3) Alexa Jacobs 12 4) Tamara Suchan 12. 6 HILLSIDE 'A' 52.82 53.55 2. 1) Hope Mekoba 10 2) Fayte Hay 11. 3) Makayla Jones 11 4) LaNiece Brown 10. 7 CARTERET 'A' 55.28 54.38 1. 1) Keniya Orange 10 2) Tichel ...

Press TV

Press TV
Mon, 25 May 2015 05:49:06 -0700

Earlier in the day, Saudi fighter jets struck al-Saifi area of the same province. No figure has been reported yet for the casualties. Saudi forces also lobbed a number of mortar rounds at Takhyah area of Sa'ada Province. There were no immediate reports ...

CNN International

CNN International
Thu, 21 May 2015 22:56:46 -0700

#CricketComesHome: Pakistan set to renew cricket love affair on home soil. By Sophia Saifi, CNN. Updated 0755 GMT (1455 HKT) May 22, 2015. Cricket returns to Pakistan 6 years after deadly attack ...
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