LAPSE:2023.6791
Published Article
LAPSE:2023.6791
Analysis of Interturn Faults on Transformer Based on Electromagnetic-Mechanical Coupling
Nan Zhu, Ji Li, Lei Shao, Hongli Liu, Lei Ren, Lihua Zhu
February 24, 2023
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.
Keywords
interturn fault, multi-physical field coupling, transformer, transient process
Suggested Citation
Zhu N, Li J, Shao L, Liu H, Ren L, Zhu L. Analysis of Interturn Faults on Transformer Based on Electromagnetic-Mechanical Coupling. (2023). LAPSE:2023.6791
Author Affiliations
Zhu N: School of Electrical Engineering and Automation, Tianjin University of Technology, Tianjin 300384, China
Li J: Tianjin Key Laboratory for Control Theory & Application in Complicated Systems, Tianjin 300384, China [ORCID]
Shao L: Tianjin Key Laboratory for Control Theory & Application in Complicated Systems, Tianjin 300384, China
Liu H: Tianjin Key Laboratory for Control Theory & Application in Complicated Systems, Tianjin 300384, China
Ren L: Tianjin Key Laboratory for Control Theory & Application in Complicated Systems, Tianjin 300384, China
Zhu L: Tianjin Key Laboratory for Control Theory & Application in Complicated Systems, Tianjin 300384, China
Journal Name
Energies
Volume
16
Issue
1
First Page
512
Year
2023
Publication Date
2023-01-02
Published Version
ISSN
1996-1073
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Original Submission
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PII: en16010512, Publication Type: Journal Article
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doi:10.3390/en16010512
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