Open AccessSuppression Method of Vibration and Noise for Power Transformer Using Tuned Mass Damper
Author(s) -
Hao Cao,
Guoyong Li,
Wanfu Zhang,
Xiaowen Wu,
Ling Lü,
Sheng Cheng Hu
Publication year - 2020
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/440/3/032048
Subject(s) - vibration , transformer , acoustics , sound pressure , linear variable differential transformer , tuned mass damper , damper , distribution transformer , structural engineering , engineering , electrical engineering , physics , voltage
The vibration of operating power transformer may generate serious noise to affect the surrounding residents. In this paper, a 35kV oil-type transformer is chosen to study the suppression method of vibration and noise using tuned mass damper (TMD). Firstly, a finite element model of the transformer system with TMD is established. Comparisons of dynamic response and sound pressure level analysis for the transformer before and after installing TMD are carried out. Overall deformation distribution comparison shows that the vibration of each peak region on the surface of the original transformer box is suppressed obviously. After the vibration reduction using TMD, the maximum sound pressure level is reduced by more than 1 dB (A). The maximum noise reduction effect of the TMD is close to 1.6 dB (A), and the minimum noise reduction effect is more than 1 dB (A) at a distance of 1 m from the center of the transformer.