Программа Расчета Трансформаторов

Institutul de Energetica al Academiei de tiin^e a Moldovei Rezumat. Este propus modelul pentru efectuarea calculelor i cercetarilor a modurilor permanente asimetrice i proceselor tranzitorie a dispozitivului tip transformator trifazat cu miez din trei tije i schema arbitrara de conexiune a bobinelor, tinand cont de cuplarea electromagnetica dintre infaurarile situate pe diferite tije. Folosind ca exemplu transformatorul de distribute 10/0,4 kV s-au efectuat calcule i analizе a celor mai caracteristice moduri permanente asimetrice, care apar la scurtcircuite, rupturi de faze, sarcina dezechilibrata in diferite scheme de conectare a bobinelor i, in special, asociate cu aparitia fluxului magnetic de secventa homopolara. Pentru regimurile i schemele luate in considerate sunt construite diagrame vectoriale pentru curenti i tensiuni, precum i pentru valorile relative ale fluxului magnetic in tije, care ofera o imagine graitoare despre caracteristicile acestor regime. Cuvinte-cheie: Model, moduri asimetrice, miez din trei tije, scheme arbitrare de conexiune a bobinelor, fluxul magnetic de secventa homopolara.

Программа Расчета Трансформаторов

Download File

Power Engineering Institute of Moldova Academy of Sciences Abstract. The model is proposed for the calculation and research of steady state asymmetric modes and transients in three-phase three legs transformer devices with arbitrary diagram of windings connection, taking into account the electromagnetic coupling of the windings, located on different legs. Using as an example distribution transformer of 10/0.4 kV calculations and analysis were performed of the most characteristic steady asymmetrical modes, that occur during short circuit, phase failure, unbalanced load for the most common windings connections and, in particular, associated with the occurrence of zero sequence magnetic flow. For the considered regimes and schemes vector diagrams were constructed for currents and voltages as well as for the relative values of magnetic flow, which give a clear idea about their particular features.

[24]Бошняга В. А. Pacчeт нecиммeтpичныx peжимoв paбoты фaзopeгyлиpyющeгo тpaнcфopмaтopa c coeдинeниeм oбмoтoк в зигзаг. Элeктpичecтвo, N 11, 1990 г.

[25]Бошняга В. А. Pacчeт и иccлeдoвaниe нecиммeтpичных peжимoв paбoты фaзoпoвopoтнoгo тpaнcфopмaтopa Извecтия вyзoв, "Энepгeтикa" N 11, 1991 г.

(function(w, d, n, s, t) )(this, this.document, "yandexContextAsyncCallbacks"); 2ff7e9595c