Simulation Analysis and Experiment Research of Transformer Vibration Based on Electric–Magnetic–Mechanic Coupling

Long He, Yongming Zhu (), Gang Liu and Chen Cao
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Long He: State Grid Xinjiang Electric Power Co., Ltd., Changji Power Supply Company, Changji 831100, China
Yongming Zhu: State Grid Xinjiang Electric Power Co., Ltd., Changji Power Supply Company, Changji 831100, China
Gang Liu: State Grid Xinjiang Electric Power Co., Ltd., Changji Power Supply Company, Changji 831100, China
Chen Cao: School of Electrical Engineering, Shenyang University of Technology, Shenyang 110870, China

Energies, 2025, vol. 18, issue 9, 1-19

Abstract: To research a transformer’s vibration characteristics, a simulation and an experiment are conducted on a 10 kV transformer. The theoretical model for core and winding vibration is established. The electric–magnetic–mechanic multi-physical field coupling model for the transformer core and winding is constructed, yielding voltage and current waveform and magnetic field distributions. The simulation results show that the amplitude of the main flux for core is 1.79 T, the amplitude of vibration acceleration for core is 0.005 m/s 2 , the magnetic flux leakage is 0.31 T, the amplitude of the vibration acceleration on the side of the winding is 0.0795 m/s 2 , and the amplitude of vibration acceleration on the front midpoint of winding is 0.0387 m/s 2 . The transformer vibration experimental platform is constructed, and no-load and load tests are conducted. Empirical findings demonstrate that the acceleration of core vibration is 0.0047 m/s 2 , and the simulation deviation is 6.38%. The maximum winding vibration acceleration at the side midpoint of phase A is 0.0714 m/s 2 , and at the front midpoint of Phase B is 0.0416 m/s 2 . Compared with experiment results, the simulation deviations are 2.1% and 3.3%, respectively. These conclusions indicate an alignment between the experiment and simulation results, thereby confirming reliability of the methodology.

Keywords: transformer; core vibration; winding vibration; simulation; experiment (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2025
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