Analysis on Vibration and Noise Characteristics of Epoxy Resin Dry-Type Transformer and Noise Reduction Measures

Abstract

As the power system continues to grow, the increase in power demand and non-linear loads increase the vibration and noise of power transformers. Long-term severe vibration will increase the probability of mechanical and insulation failures of transformers, affecting the safe and reliable operation of equipment. At the same time, the increase in noise will make it difficult for transformers to meet national requirements. Therefore, to improve the design level of power equipment, it is of great significance to study the vibration and noise characteristics of transformers and propose vibration and noise reduction measures. In this paper, a modal test is carried out on the core of epoxy resin dry-type transformers to explore its natural vibration characteristics. Secondly, a finite element simulation model is established to analyze the vibration characteristics of the transformer under no-load conditions. Finally, the noise characteristics of the transformer are obtained through experiments, and effective measures to reduce noise are put forward by analyzing the influencing factors, which provides a basis for the design of low-noise transformers.