Analysis of Transformer Vibration and Noise Suppression Measures Caused by Subway
In order to improve the safety and stability of subway operation,the finite element model of transformer was established based on the finite element analysis method,and the effectiveness of the simulation analysis results and noise suppression measures was verified through the physical field coupling simulation analysis and application effect exploration.The results show that the flux law and displacement law of the transformer both increase in half a cycle and decrease in half a cycle.The noise level is increased by the DC bias electron,and the increase amplitude is proportional to the bias current.In the same transformer,the noise of the iron core is larger than that of the winding.The application of vibration and noise suppression measures can significantly reduce the level of transformer vibration and noise,and can provide support for the operation and maintenance management of metro transformer.
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