高压电器2025，Vol.61Issue(3)：229-236,8.DOI:10.13296/j.1001-1609.hva.2025.03.028
10 kV油浸式变压器结构降噪优化设计
Optimum Design on Noise Reduction for 10 kV Oil-immersed Transformer Structure
摘要
Abstract
The noise of distribution transformer is prominent.In this paper,optimization measures for the oil tank structure of 10 kV transformer is proposed through analyzing the vibration and noise characteristics as well as modal parameters of the transformer surface.The vibration measurement of the 10 kV distribution transformer is carried out,and the contribution of each structure of the transformer to the radiated noise is simulated and calculated.It is ob-tained through analysis that the maximum vibration position of the oil-immersed transformer is about 20 cm away from the bottom,and the main energy of vibration is concentrated at 100 Hz,200 Hz and 300 Hz.The contribution of the front and back of the oil tank to the noise radiation power is maximum.By analyzing the modal participation factor of the oil tank structure,the dominant mode of the oil tank is obtained,the maximum position of the dominant mode shape of the oil tank is determined,and the calculation result is basically identical to that of the measurement.On this basis,an additional mass block is used to optimize the vibration distribution of the oil tank structure and the mod-al vibration amplitudes at the dominant frequencies 100 Hz,200 Hz and 300 Hz are reduced.Finally,a set of oil-im-mersed transformer is customized in accordance with the proposed optimization measures and the noise test is carried out.The average A sound level of the transformer after optimization is reduced by 7.8 dB(A)compared with the origi-nal one.关键词
10 kV油浸式变压器/振动特性/模态/质量块/结构优化Key words
10 kV oil-immersed transformer/vibration characteristics/modal/mass/structural optimization引用本文复制引用
胡静竹,王延召,周兵,倪园,干喆渊..10 kV油浸式变压器结构降噪优化设计[J].高压电器,2025,61(3):229-236,8.基金项目
国家电网公司科技项目(5500-202155351A-0-0-00).Project Supported by State Grid Corporation Project of China(5500-202155351A-0-0-00). （5500-202155351A-0-0-00）
