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Analysis of Interturn Faults on Transformer Based on Electromagnetic-Mechanical Coupling

Author

Listed:
  • Nan Zhu

    (School of Electrical Engineering and Automation, Tianjin University of Technology, Tianjin 300384, China)

  • Ji Li

    (Tianjin Key Laboratory for Control Theory & Application in Complicated Systems, Tianjin 300384, China)

  • Lei Shao

    (Tianjin Key Laboratory for Control Theory & Application in Complicated Systems, Tianjin 300384, China)

  • Hongli Liu

    (Tianjin Key Laboratory for Control Theory & Application in Complicated Systems, Tianjin 300384, China)

  • Lei Ren

    (Tianjin Key Laboratory for Control Theory & Application in Complicated Systems, Tianjin 300384, China)

  • Lihua Zhu

    (Tianjin Key Laboratory for Control Theory & Application in Complicated Systems, Tianjin 300384, China)

Abstract

A running transformer frequently experiences interturn faults; they are typically difficult to detect in their early stages but eventually progress to interturn short circuits, which cause damage to the transformer. Therefore, finding out the fault mechanism of the full interturn fault process can provide a theoretical basis for transformer fault detection. In this paper, an electromagnetic-solid mechanics coupled finite element model consistent with an actual oil-immersed three-phase transformer is established. The transient process of winding from interturn discharge to interturn short circuit is simulated to study the electromagnetic characteristics as well as the mechanical characteristics during transformer failure. The model parameters of the transformer are simulated to obtain the fault current, electromagnetic parameters and other performance parameters to study the characteristics of the magnetic field and coil force when interturn faults occur. Finally, the vibration of the transformer casing is used to detect as well as diagnose the transformer fault situation, providing a theoretical basis for the study of transformer detection and diagnosis capability improvement measures.

Suggested Citation

  • Nan Zhu & Ji Li & Lei Shao & Hongli Liu & Lei Ren & Lihua Zhu, 2023. "Analysis of Interturn Faults on Transformer Based on Electromagnetic-Mechanical Coupling," Energies, MDPI, vol. 16(1), pages 1-13, January.
    • Handle: RePEc:gam:jeners:v:16:y:2023:i:1:p:512-:d:1023032
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    References listed on IDEAS

    as
    1. Jia, Xiaoyu & Lin, Mei & Su, Shiwei & Wang, Qiuwang & Yang, Jian, 2022. "Numerical study on temperature rise and mechanical properties of winding in oil-immersed transformer," Energy, Elsevier, vol. 239(PA).
    2. 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.
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    Citations

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    Cited by:

    1. Rogkas, N. & Karampasakis, E. & Fotopoulou, M. & Rakopoulos, D., 2024. "Assessment of heat transfer mechanisms of a novel high-frequency inductive power transfer system and coupled simulation using FEA," Energy, Elsevier, vol. 300(C).

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