<link rel="stylesheet" href="styles.f3b1fba60ec7970c.css">

Оцінювання впливу залишкового намагнічування автотрансформатора на умови розвитку резонансних перенапруг

Ескіз

Файли

197705.pdf (450,72 KB)

Дата

2026

Автори




Назва журналу

Номер ISSN

Назва тому

Видавець

Вінницький національний технічний університет

DOI

https://doi.org/10.31649/1997-9266-2026-184-1-46-54

Анотація

The article describes the use of a controlled switching device for switching on a single-phase autotransformer 750/330/15.75 kV, with a capacity of 417 MVA in the main electrical network of Ukraine. The basis of the study was the development of a detailed model of electromagnetic transients of the autotransformer. The transformer model contains an accurate reproduction of hysteresis and residual magnetization, which was confirmed using real oscillograms and manufacturer's data. The article considers the use of a controlled switching device for switching on an autotransformer with a capacity of 333 MVA, with a voltage of 750/330/15.75 kV in main electrical networks. A methodology for assessing the degree of risk of resonant overvoltages, taking into account the phase angle of switching on and the depth of saturation of the magnetic core, has been developed. The paper presents a comprehensive study of the influence of residual magnetization and the switch-on angle on the amplitude and dynamics of the aperiodic component of the magnetic flux during switching of high and extra-high voltage transformers and autotransformers. The dependence of the aperiodic component on the instantaneous value of the sinusoidal component and the residual flux was analytically obtained, which allowed establishing the condition for complete compensation of the aperiodic component. Based on numerical experiments, it is shown that the correct choice of the switch-on angle is able to almost completely eliminate the aperiodic component, while uncontrolled switching generates magnetizing current and overvoltage spikes, the amplitude of which can be 200...250 times greater compared to controlled modes. The modeling confirmed the universal exponential nature of the damping for all switch-on angles and revealed the dominant influence of the initial amplitude. The results demonstrate the critical importance of residual flux estimation and phase-by-phase synchronization of the switching moment for minimizing overloads, reducing the probability of resonance processes, and increasing the reliability of the main electrical networks. The obtained dependencies and the proposed algorithm for determining the optimal switching angle form a theoretical and practical basis for the implementation of controlled switching devices (CSDs) in high and extra-high voltage networks, ensuring improved electromagnetic compatibility and extending the equipment life.

Опис

Ключові слова

autoparametric resonance , SF₆ circuit breaker , resonant overvoltages , residual magnetization , switching instant , controlled switching device

УДК

621.311.1.001.57

Тип документа

Article, professional native edition
Article

Мова

uk_UA

Є частиною

Вісник Вінницького політехнічного інституту. № 1 : 46–54.

ISSN

1997-9274

Бібліографічний опис

Кузнецов В. Г., Кучанський В. В., Тугай Ю. І., Шевчук В. В. Оцінювання впливу залишкового намагнічування автотрансформатора на умови розвитку резонансних перенапруг // Вісник Вінницького політехнічного інституту. 2026. № 1. С. 46–54. URI: https://visnyk.vntu.edu.ua/index.php/visnyk/article/view/3399.

URI

https://ir.lib.vntu.edu.ua/handle/123456789/51008

Зібрання

Вісник Вінницького політехнічного інституту. 2026. № 1

Схвалення

Рецензія

Доповнено

Цитується в

Список використаної літератури (15)

  1. V. Kuchanskyy, “Criteria of resonance overvoltages occurrence in abnormal conditions of extra high voltage transmissionlines,” Наукові праці Вінницького національного технічного університету, No 4, с. 51-54, 2016.
  2. I. Hunko, V. Kuchanskyi, A. Nesterko, and O. Rubanenko, Modes of Electrical Systems and Grids with Renewable Energy Sources. LAMBERT Academic Publishing, 2019, p. 184, ISBN 978–613–9–88956–3.
  3. V. Kuchanskyy, and O. Rubanenko, “Influence assessment of autotransformer remanent flux on resonance overvoltage,” UPB Scientific Bulletin, Series C: Electrical Engineering and Computer Science, no. (83) 3, pp. 233-250, 2020.
  4. V. Kuchanskyy, O. Rubanenko, and I. Hunko, “Autoparametric self-excitation of even harmonics in extra high voltage transmission lines,” in Proceedings of the 2021 IEEE Power & Energy Society / Industry Applications Society PowerAfrica Con-ference, 2021, pp. 1-5.
  5. C. Wei, X. Li, M. Yang, Z. Ma, and H. Hou, “Novel remanence determination for power transformers based on magnet-izing inductance measurements,” Energies, no. 12 (24), Art. no. 4616, 2019. https://doi.org/10.3390/en12244616.
  6. N. Chiesa, and H. K. Høidalen, “Novel approach for reducing transformer inrush currents: laboratory measurements, analytical interpretation and simulation studies,” IEEE Transactions on Power Delivery, vol. 25, pp. 2609-2616, 2010.
  7. Y. M. Xing, J. Luo, J. P. Zhou, Z. B. Xiong, and M. Cai, “Estimation of remanence in transformer core,” Power System Technology, no. 35, pp. 169-172, 2011.
  8. Q. Wang, Y. Ren, Y. Wang, C. Liu, and S. Wu, “Residual flux measurement of single-phase transformers based on equiv-alent resistance,” ACES Journal, no. 38 (7), pp. 539-548, 2023.
  9. E. Cardelli, A. Faba, and F. Tissi, “Prediction and control of transformer inrush currents,” IEEE Transactions on Magnet-ics, no. 51 (3), pp. 1-4, 2015.
  10. W. Q. Ge, Y. H. Wang, X. G. Chen, S. X. Xiao, X. G. Yang, and D. N. Lv, “Method to measure and weaken the residual flux of the power transformer core,” Transactions of China Electrotechnical Society, no. 30, pp. 10-16, 2015.