https://de.wikipedia.org/w/api.php?action=feedcontributions&feedformat=atom&user=99.2.169.157Wikipedia - Benutzerbeiträge [de]2025-05-10T18:39:42ZBenutzerbeiträgeMediaWiki 1.44.0-wmf.28https://de.wikipedia.org/w/index.php?title=System_Average_Interruption_Duration_Index&diff=90666360System Average Interruption Duration Index2011-05-19T20:44:47Z<p>99.2.169.157: Added a more technical formula and links to ASAI, ASUI</p>
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<div>{{Unreferenced|date=December 2009}}<br />
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:<br />
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<math>\mbox{SAIDI} = \frac{\sum{U_i N_i}}{\sum{N_i}}</math><br />
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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,<br />
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<math>\mbox{SAIDI} = \frac{\mbox{sum of all customer interruption durations}}{\mbox{total number of customers served}}</math><br />
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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.<br />
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==See also==<br />
*[[SAIFI]]<br />
*[[CAIDI]]<br />
*[[CAIFI]]<br />
*[[MAIFI]]<br />
*[[ASAI]]<br />
*[[ASUI]]<br />
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{{DEFAULTSORT:Saidi}}<br />
[[Category:Electric power]]<br />
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[[sv:SAIDI]]</div>99.2.169.157