Mathematical model for the management of the wave processes in three-winding transformers with consideration of the main magnetic flux in mining industry

• Autorzy: Seheda M. S. , Beshta O. S. , Gogolyuk P. F. , Blyznak Yu. V. , Dychkovskyi R. D. , Smoliński Adam

Identyfikatory

DOI

10.46873/2300-3960.1402

• Języki publikacji: EN

Abstrakty

EN

The aim of the work is to study the wave processes in three-winding power transformers caused by impulse overvoltage, to create an improved mathematical model for reproducing the process of distribution and transmission of the impulse in the windings of a three-winding power transformer. A mathematical model has been developed for the study of internal overvoltage in the windings of three-winding power transformers, based on the proposed substitute circuit of an infinitesimal element, taking into account the longitudinal and transverse inductive connections between the turns of the winding, the electromagnetic connections between the windings and the flux splitting from the main magnetic flux of the magnetic wire, in the form of a system of differential equations in partial derivatives using a modified method of variable separation. The formation of initial and boundary conditions for this mathematical model is presented. The results of the study of the distribution of overvoltage along the windings of a three-winding power transformer as a function of distance and time during the action of a voltage pulse on them are presented, as well as the distribution of overvoltage at different points of the winding of high, medium and low voltage as a function of time. The study of the wave processes in the windings of a three-winding power transformer makes it possible to form new approaches to the coordination of the insulation in the windings of the transformer, replacing physical experiments. The choice of insulation for high and ultra-high-voltage power transformers remains a particularly difficult engineering task since it is necessary to know the maximum voltage values at different points of the winding. The mathematical model presented can be used to create more complex models that allow a more detailed study of the wave processes.

Słowa kluczowe

EN

managing the wave process; mathematical model; transformer; differential equations with partial derivatives; initial and boundary conditions

PL

zarządzanie procesem falowym; model matematyczny; transformator; równania różniczkowe z pochodnymi cząstkowymi; warunki początkowe i brzegowe

• Wydawca: Elsevier ; Główny Instytut Górnictwa
• Czasopismo: Journal of Sustainable Mining
• Rocznik: 2024
• Tom: Vol. 23, iss. 1
• Strony: 20--39
• Opis fizyczny: Bibliogr. 31 poz.

Twórcy

autor

Seheda M. S.

• Lviv Polytechnic National University, 79013, L'vov, Stepana Bandera St., 12, Ukraine

• https://orcid.org/0000-0003-0002-4638

autor

Beshta O. S.

• Dnipro University of Technology, 49005, Dnipro, av. Dmytra Yavornytskoho, Ukraine

• https://orcid.org/0000-0002-4648-0260

autor

Gogolyuk P. F.

• Lviv Polytechnic National University, 79013, L'vov, Stepana Bandera St., 12, Ukraine

• https://orcid.org/0000-0003-0002-4638

autor

Blyznak Yu. V.

• Lviv Polytechnic National University, 79013, L'vov, Stepana Bandera St., 12, Ukraine

• https://orcid.org/0000-0002-4914-2283

autor

Dychkovskyi R. D.

• AGH University of Science and Technology, Faculty of Management, 30059, al. Mickiewicza 30, Krakow, Poland

• https://orcid.org/0000-0002-3143-8940

autor

Smoliński Adam

• Central Mining Institute, 40166, Plac Gwarkow 1, Katowice, Poland
• Spółka Restrukturyzacji Kopalń S.A., 30059, Strzelców Bytomskich 207, Bytom, Poland

• https://orcid.org/0000-0002-4901-7546

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