Evaluation of short interruptions of supply voltage in distribution system

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23220%2F19%3A43955996" target="_blank" >RIV/49777513:23220/19:43955996 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Evaluation of short interruptions of supply voltage in distribution system
Original language description
Continuity of supply can be regulated by a national regulation authority to maintain or improve its level. Short interruptions are monitored and regulated much less frequently than long interruptions. They can occur as single event or in sequences cased by a single power system event or by independent events. Frequency of their occurrence is mainly characterized by the indicator MAIFI. Method used for counting interruption sequences greatly affects the values of the indicator. In regulatory framework, it is important to define continuity of supply indicators and to establish procedures for counting of interruptions. The presented work is initial step in preparation of methodology for MAIFI calculation in the Czech Republic. In the paper, long-term monitoring of events in selected MV/LV substations is evaluated. Number and percentage of short and long interruptions during monitoring period is shown. Values of MAIFI indicator are compared with values of modified indicator that besides short interruptions includes also severe voltage dips. The effect of various aggregation methods and time-aggregation intervals for counting of short interruptions is illustrated on the case of a MV/LV substation with extreme occurrence of short interruptions.
Czech name
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Czech description
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Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
Proceedings of the 10th International Scientific Symposium on Electrical Power Engineering (ELEKTROENERGETIKA 2019)
ISBN
978-80-553-3324-3
ISSN
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e-ISSN
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Number of pages
5
Pages from-to
111-115
Publisher name
Technical University of Košice
Place of publication
Košice
Event location
Stará Lesná, Slovenská republika
Event date
Sep 16, 2019
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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