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Analysis of the Electromechanical Characteristics of Power Transformer under Different Residual Fluxes

Author

Listed:
  • Wenqi Ge

    (School of Control and Mechanical Engineering, Tianjin Chengjian University, Tianjin 300384, China)

  • Chenchen Zhang

    (School of Control and Mechanical Engineering, Tianjin Chengjian University, Tianjin 300384, China)

  • Yi Xie

    (School of Control and Mechanical Engineering, Tianjin Chengjian University, Tianjin 300384, China)

  • Ming Yu

    (School of Computer and Information Engineering, Tianjin Chengjian University, Tianjin 300384, China)

  • Youhua Wang

    (State Key Laboratory of Reliability and Intelligence of Electrical Equipment, Hebei University of Technology, Tianjin 300130, China)

Abstract

When the electromagnetic transients occur in a power transformer, an inrush current is generated in its winding. The inrush current not only affects the performance of the transformer windings, but also affects the lifetime of the transformer. Many factors affect the inrush current, the most influential ones among which are the closing phase angle and the residual flux. In this paper, a dry-type transformer simulation model is built to analyze the influence of the inrush current on the performance of transformer windings during no-load reclosing conditions. Firstly, the inrush current was generated in the transformer windings during the no-load reclosing operation under different residual fluxes. Secondly, the field-circuit coupling 3d finite element method is used to analyze the electromagnetic force at different locations of the transformer windings under the influence of different inrush currents. The results of winding structural parameter variations are obtained through electromagnetic-structural coupling simulation, and the electromagnetic forces are used as the input parameter for the structural analysis. Finally, the residual flux is generated by controlling the opening and closing angle of the transformer through the phase-controlled switch, and the winding electromechanical characteristics are tested under different residual fluxes. Finally, comparisons of the test and simulation results are drawn to verify the impact of the closing angle and residual flux on inrush current and the winding deformation during the no-load reclosing conditions.

Suggested Citation

  • Wenqi Ge & Chenchen Zhang & Yi Xie & Ming Yu & Youhua Wang, 2021. "Analysis of the Electromechanical Characteristics of Power Transformer under Different Residual Fluxes," Energies, MDPI, vol. 14(24), pages 1-22, December.
    • Handle: RePEc:gam:jeners:v:14:y:2021:i:24:p:8244-:d:697267
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    References listed on IDEAS

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    1. Chen Wei & Xianqiang Li & Ming Yang & Zhiyuan Ma & Hui Hou, 2019. "Novel Remanence Determination for Power Transformers Based on Magnetizing Inductance Measurements," Energies, MDPI, vol. 12(24), pages 1-14, December.
    2. Mehran Tahir & Stefan Tenbohlen, 2021. "Transformer Winding Condition Assessment Using Feedforward Artificial Neural Network and Frequency Response Measurements," Energies, MDPI, vol. 14(11), pages 1-25, May.
    3. Xiaomu Duan & Tong Zhao & Jinxin Liu & Li Zhang & Liang Zou, 2018. "Analysis of Winding Vibration Characteristics of Power Transformers Based on the Finite-Element Method," Energies, MDPI, vol. 11(9), pages 1-19, September.
    4. Grzegorz Komarzyniec, 2021. "Calculating the Inrush Current of Superconducting Transformers," Energies, MDPI, vol. 14(20), pages 1-19, October.
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    Cited by:

    1. Huabin Song & Youhua Wang & Jiangpai Peng & Chengcheng Liu, 2022. "Study on the Uniformity of Temperature Distribution of Transverse Flux Induction Heating Based on a New Magnetic Pole," Energies, MDPI, vol. 15(19), pages 1-15, October.
    2. Andrey A. Radionov & Ivan V. Liubimov & Igor M. Yachikov & Ildar R. Abdulveleev & Ekaterina A. Khramshina & Alexander S. Karandaev, 2023. "Method for Forecasting the Remaining Useful Life of a Furnace Transformer Based on Online Monitoring Data," Energies, MDPI, vol. 16(12), pages 1-27, June.
    3. Łukasz Majka & Bernard Baron & Paweł Zydroń, 2022. "Measurement-Based Stiff Equation Methodology for Single Phase Transformer Inrush Current Computations," Energies, MDPI, vol. 15(20), pages 1-19, October.

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