Elimination of three-phase transformer inrush current through core forced magnetization and simultaneous closing

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F46747885%3A24220%2F10%3A%230001720" target="_blank" >RIV/46747885:24220/10:#0001720 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Elimination of three-phase transformer inrush current through core forced magnetization and simultaneous closing

Popis výsledku v původním jazyce

The inrush current occurs during transformer energization due to flux saturation in the core. Controlled switching connects transformer to power grid in proper phase angle derived from core remanent fluxes. The DC forced magnetization prior to transformer energization is one of simultaneous closing strategy methods. Active intervention to the transformer remanent flux was realized as a DC power supply with current splitter and automated disconnection circuit. Inrush currents were measured in dependencyon switch on angle. Resulting current maps determine the range of switch on angles in which the current does not exceed the limits. This angle range restricts the choice of synchronous switch closing time scatter. This paper shows the results of a research on possible closing time scatter dependency both on forced pre-magnetizing current and on transformer working flux for star, grounded star and delta winding connections.

Název v anglickém jazyce

Elimination of three-phase transformer inrush current through core forced magnetization and simultaneous closing

Popis výsledku anglicky

The inrush current occurs during transformer energization due to flux saturation in the core. Controlled switching connects transformer to power grid in proper phase angle derived from core remanent fluxes. The DC forced magnetization prior to transformer energization is one of simultaneous closing strategy methods. Active intervention to the transformer remanent flux was realized as a DC power supply with current splitter and automated disconnection circuit. Inrush currents were measured in dependencyon switch on angle. Resulting current maps determine the range of switch on angles in which the current does not exceed the limits. This angle range restricts the choice of synchronous switch closing time scatter. This paper shows the results of a research on possible closing time scatter dependency both on forced pre-magnetizing current and on transformer working flux for star, grounded star and delta winding connections.

Druh

D - Stať ve sborníku

CEP obor

JA - Elektronika a optoelektronika, elektrotechnika

OECD FORD obor

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Projekt

<a href="/cs/project/GP102%2F08%2FP453" target="_blank" >GP102/08/P453: Omezování zapínacího proudu transformátorů</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2010

Kód důvěrnosti údajů

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

Název statě ve sborníku

Applied Electronics

ISBN

978-80-7043-865-7

ISSN

1803-7232

e-ISSN

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Počet stran výsledku

4

Strana od-do

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Název nakladatele

University of West Bohemia

Místo vydání

Pilsen

Místo konání akce

Pilsen

Datum konání akce

1. 1. 2010

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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