Abstract
A mathematical model of a two-winding transformer for research of fast transient processes in windings in the form of an electromagnetic circuit, taking into account the main magnetic flux, own and mutual interturns and interwinding dissipation fluxes, transverse turns and longitudinal interwinding capacitances of the winding, is developed by using the straights method. The created model simplifies engineering calculations of fast transient processes in windings by applying the methods of the theory of electromagnetic circuits instead of the methods of mathematical physics, which are difficult for practical application. Transient processes and voltage distribution in transformer windings, under the action of pulse overvoltage in the form of a standardized pulse, are researched. References 8, figures 4.
Publisher
National Academy of Sciences of Ukraine (Co. LTD Ukrinformnauka) (Publications)
Subject
Electrical and Electronic Engineering,Energy Engineering and Power Technology
Reference8 articles.
1. Župan T., Trkulja B., Štih Ž. Power transformer winding model for lightning impulse testing. Procedia Engineering. 2017. Vol. 202. Pp. 297-304. DOI: https://doi.org/10.1016/j.proeng.2017.09.717
2. Lavrinovich V.A., Isaev Y.N., Mytnikov A.V. Advanced control state technology of transformer. International Journal on Technical and Physical Problems of Engineering. 2013. Vol. 5. Iss. 17. No 4. Pp. 94-98.
3. Deaconu D., Chirilă A.-I., Năvrăpescu V., Ghiţă C., Răchiţeanu A., Viişoreanu A.-M. The Influence of Parameters of a Power Transformer Winding Equivalent Distributed Circuit Model on Atmospheric Overvoltage Wave Internal Propagation along the Windings. International Conference and Exposition on Electrical And Power Engineering (EPE). Iasi, Romania, October 22-23, 2020. Pp. 507-512. DOI: https://doi.org/10.1109/EPE50722.2020.9305584.
4. Electrical Transient Interaction between Transformers and the Power System. Part 1: Expertise. Joint Working Group A2/C4.39. CIGRE Brochure 577A, April 2014. 176 p. URL: http://xmlopez.webs.uvigo.es/Html/Info/2014_Electrical_Transients_Part1_Expertise.pdf (accessed at 12.05.2022).
5. Electrical Transient Interaction between Transformers and the Power System. Part 2: Case Studies. Joint Working Group A2/C4.39. CIGRE Brochure 577B, April 2014. 124 p. URL: http://xmlopez.webs.uvigo.es/Html/Info/2014_Electrical_Transients_Part2_Expertise.pdf (accessed at 12.05.2022).