Evaluation of short interruptions of supply voltage in distribution system

Kód výsledku v IS VaVaI

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Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Evaluation of short interruptions of supply voltage in distribution system

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

Evaluation of short interruptions of supply voltage in distribution system

Popis výsledku anglicky

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.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

20201 - Electrical and electronic engineering

Projekt

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Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2019

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

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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Počet stran výsledku

5

Strana od-do

111-115

Název nakladatele

Technical University of Košice

Místo vydání

Košice

Místo konání akce

Stará Lesná, Slovenská republika

Datum konání akce

16. 9. 2019

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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