Energies, Vol. 11, Pages 74: Power Transformer Spatial Acoustic Radiation Characteristics Analysis under Multiple Operating Conditions Energies doi: 10.3390/en11010074 Authors: Liming Ying Donghui Wang Jinwei Wang Guodong Wang Xiaowen Wu Jiangtao Liu Spatial acoustic radiation characteristics analysis is the precondition of reducing the noise influence of outdoor power transformer while multi-physical field coupling method can be applied to quantify and reveal these acoustic characteristics of a running power transformer. In this study, based on the theoretical analysis about noise generation and dissemination process, an acoustic radiation model about oil-immersed power transformer was established and verified with field test data in time and frequency domain. Then, far-field analysis and directivity analysis were accomplished to characterize acoustic field of power transformer under multiple operating conditions. Finally, the acoustic radiation influence on potential surrounding buildings were analyzed and discussed. The visual results and conclusion provide acoustic guide for the optimal planning and design about both power substation and ambient buildings.
Energy, Environment Protection, Nuclear Power Engineering