摘要
针对变压器噪声的不良影响,提出基于分布式动力吸振的减振降噪措施。以某10 kV油浸式变压器作为研究对象,建立变压器-分布动力吸振器系统有限元模型,对比分析添加分布式动力吸振器前后变压器箱体的动力响应及声场。结果表明分布式动力吸振对变压器箱体振动抑制效果明显,场域内A计权声压级最大值降低约4 dB(A),1m远场最大降噪效果接近2.1 dB(A)。
Targeting the adverse effects of transformer noise,the paper proposes the vibration and noise reduction measures based on distributed tuned mass damper. Taking a 10 kV oil transformer as the research object,the finite element model of the transformerdistributed tuned mass damper system is established. A comparative analysis is done of the dynamic response and sound field of the transformer box with and without the distributed tuned mass damper. The results show that the distributed tuned mass damper has significant suppression effect on the transformer box vibration,the maximum of A-weighting sound pressure level in the field is reduced about 4 db(A)and the maximum noise reduction of 1 m far field is close to 2.1 db(A).
作者
曹浩
张万福
曾庆华
卢铃
王应飞
彭继文
CAO Hao;ZHANG Wanfu;ZENG Qinghua;LU Ling;WANG Yingfei;PENG Jiwen(State Grid Hunan Electric Power Research Institute,Changsha 410007,China;School of Energy and Power Engineering,University of Shanghai for Science and Technology,Shanghai 200093,China)
出处
《智慧电力》
北大核心
2021年第11期105-111,共7页
Smart Power
基金
国家自然科学基金资助项目(51875361)
国家电网有限公司科技项目(5016A018000B)。
关键词
变压器
减振降噪
分布式动力吸振器
声压级
transformer
vibration and noise reduction
tuned mass damper
sound pressure level