Power Transformer Spatial Acoustic Radiation Characteristics Analysis under Multiple Operating Conditions

Liming Ying, Donghui Wang, Jinwei Wang, Guodong Wang, Xiaowen Wu and Jiangtao Liu
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Liming Ying: School of Electrical Engineering, Wuhan University, Wuhan 430072, China
Donghui Wang: School of Electrical Engineering, Wuhan University, Wuhan 430072, China
Jinwei Wang: School of Electrical Engineering, Wuhan University, Wuhan 430072, China
Guodong Wang: State Grid Yantai Power Supply Company, Yantai 265199, China
Xiaowen Wu: State Grid Hunan Electric Power Corporation Research Institute, Changsha 410007, China
Jiangtao Liu: Department of Physics and Electrical Engineering, Hubei University of Education, Wuhan 430205, China

Energies, 2018, vol. 11, issue 1, 1-16

Abstract: 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.

Keywords: power transformer; audible noise; multi-physical field coupling; multiple operating conditions; far-field analysis; directivity analysis; planning and design optimization (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2018
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