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SM ISO690:2012 БОШНЯГА, Валерий, СУСЛОВ, Виктор. Исследование несимметричных режимов трехстержневого фазоповоротного трансформатора по схеме «двойной обратный зигзаг» с переключением в нейтрали. In: Problemele Energeticii Regionale, 2015, nr. 1(27), pp. 1-10. ISSN 1857-0070. |
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Problemele Energeticii Regionale | |||||
Numărul 1(27) / 2015 / ISSN 1857-0070 | |||||
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CZU: 621.314.25(478) | |||||
Pag. 1-10 | |||||
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The model for power three-phase three limbs phase-shifting transformer with “inverse double zig-zag connection” was investigated. Calculations and research of steady state asymmetric modes of transformer with such windings connection were fulfilled, taking into account the electromagnetic coupling of the windings, located on different legs. The analysis was made for the most specific steady state asymmetric modes, that occur during different short circuits and asymmetric no load regimes, associated with the appearance of zero sequence magnetic flux. Vector diagrams for windings currents and voltages were constructed, as well as for the relative values of magnetic fluxes in legs, which in ensemble give a clear idea about their particularities. |
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Cuvinte-cheie модель, несимметричные режимы, трехстержневой магнитопровод, фазоповоротный трансформатора, схема двойного зигзага, магнитный поток нулевой последовательности. |
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<?xml version='1.0' encoding='utf-8'?> <oai_dc:dc xmlns:dc='http://purl.org/dc/elements/1.1/' xmlns:oai_dc='http://www.openarchives.org/OAI/2.0/oai_dc/' xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance' xsi:schemaLocation='http://www.openarchives.org/OAI/2.0/oai_dc/ http://www.openarchives.org/OAI/2.0/oai_dc.xsd'> <dc:creator>Boşneaga, V.A.</dc:creator> <dc:creator>Suslov, V.M.</dc:creator> <dc:date>2015-04-01</dc:date> <dc:description xml:lang='en'> The model for power three-phase three limbs phase-shifting transformer with “inverse double zig-zag connection” was investigated. Calculations and research of steady state asymmetric modes of transformer with such windings connection were fulfilled, taking into account the electromagnetic coupling of the windings, located on different legs. The analysis was made for the most specific steady state asymmetric modes, that occur during different short circuits and asymmetric no load regimes, associated with the appearance of zero sequence magnetic flux. Vector diagrams for windings currents and voltages were constructed, as well as for the relative values of magnetic fluxes in legs, which in ensemble give a clear idea about their particularities. </dc:description> <dc:description xml:lang='ro'>Este realizat modelul transformatorului trifazat de putere pentru reglarea fazei cu schema de conexiune în "zig-zag dublu invers" cu miez din trei coloane. Au fost efectuate calcule şi studiate particularităţile regimurilor permanente nesimetrice ale transformatorului cu această schemă de conexiune, ţinând cont de interacţiunea electromagnetică mutuală dintre înfăşurările amplasate pe diferite coloane a miezului de fier. S-au cercetat regimurile nesimetrice permanente, care apar în diverse regimuri de scurtcircuit şi de regimuri dezechilibrate ale transformatorului. Calculile şi analizele au fost efectuate în baza transformatorului de distribuţie şi includ cele mai tipice regimurile asimetrice, care apar la modurile asimetrice. Pentru regimurile examinate s-au construit diagrame fazorilor curenţilor şi tensiunilor înfăşurărilor, precum şi a valorilor fluxului magnetic în coloanele miezului transformatorului în sistemul de unităţi relative. Rezultatele obţinute permit o prezentare la general a particularităţilor funcţionării transformatorului examinat în regimuri nesimetrice. </dc:description> <dc:description xml:lang='ru'>Реализована расчетная модель силового трехфазного фазоповоротного трансформа-тора (ФПТ) для схемы соединения обмоток «двойной обратный зигзаг» с трехстержневой конструкцией магнитопровода, с целью расчета модулей и углов векторов токов и напряжений в обмотках трехстерж-невого ФПТ при любых несимметричных режимах. Предложенная модель позволяет исследовать все многообразие несимметричных режимов устройства на основе единого подхода. В результате исследова-ний наиболее характерных установившихся несимметричных режимов, возникающих при различных коротких замыканиях и неполнофазных режимах, выявлены режимы, сопровождающиеся появлением магнитного потока нулевой последовательности, и построены векторные диаграммы токов и напряжений обмоток, относительных значений магнитного потока в стержнях. </dc:description> <dc:source>Problemele Energeticii Regionale 27 (1) 1-10</dc:source> <dc:subject>модель</dc:subject> <dc:subject>фазоповоротный трансформатора</dc:subject> <dc:subject>несимметричные режимы</dc:subject> <dc:subject>трехстержневой магнитопровод</dc:subject> <dc:subject>схема двойного зигзага</dc:subject> <dc:subject>магнитный поток нулевой последовательности.</dc:subject> <dc:title>Исследование несимметричных режимов трехстержневого фазоповоротного трансформатора по схеме «двойной обратный зигзаг» с переключением в нейтрали</dc:title> <dc:type>info:eu-repo/semantics/article</dc:type> </oai_dc:dc>