Тип публикации: доклад, тезисы доклада, статья из сборника материалов конференций
Конференция: International Conference on Advanced Technologies in Materials Science, Mechanical and Automation Engineering, MIP: Engineering-III 2021
Год издания: 2021
Идентификатор DOI: 10.1063/5.0072162
Аннотация: The connection between the heating of power transformers and nonlinear distortion of the current curve is shown. Distortion is created by non-linear electrical loads. The heating is caused by the higher harmonics of the electric current flowing through the transformer. The necessity of solving the problem of heating transformers inПоказать полностьюthe presence of a large share of nonlinear consumers of electricity in their load has been substantiated. The results of the analysis of voltage and current sinusoidal distortions of transformers with a predominance of nonlinear load are presented. It was revealed that the harmonic coefficients exceeded the values admissible by the standards. In the spectrum of harmonics, the third harmonic has the highest percentage. The simulation of an electrical network with a transformer and nonlinear load in the MATLAB environment has been performed. The results are obtained for the original network and the network with the installed passive filter. The filter is designed for the third harmonic of the electric current. As a result of the simulation, a significant reduction in the current harmonic coefficient was obtained after installing a passive filter. Analysis of other methods of reducing the temperature of the transformer from the influence of higher harmonics of the current showed the advantage for the substations under consideration of the method for reducing the load of transformers by installing an additional transformer. © 2021 Author(s).
Журнал: AIP Conference Proceedings
Выпуск журнала: Vol. 2402
Номера страниц: 60033
ISSN журнала: 0094243X
Издатель: American Institute of Physics Inc.