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Energies 2018, 11(1), 74; doi:10.3390/en11010074

Power Transformer Spatial Acoustic Radiation Characteristics Analysis under Multiple Operating Conditions

1
School of Electrical Engineering, Wuhan University, Wuhan 430072, China
2
State Grid Yantai Power Supply Company, Yantai 265199, China
3
State Grid Hunan Electric Power Corporation Research Institute, Changsha 410007, China
4
Department of Physics and Electrical Engineering, Hubei University of Education, Wuhan 430205, China
*
Author to whom correspondence should be addressed.
Received: 15 October 2017 / Revised: 12 December 2017 / Accepted: 18 December 2017 / Published: 1 January 2018
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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. View Full-Text
Keywords: power transformer; audible noise; multi-physical field coupling; multiple operating conditions; far-field analysis; directivity analysis; planning and design optimization power transformer; audible noise; multi-physical field coupling; multiple operating conditions; far-field analysis; directivity analysis; planning and design optimization
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Ying, L.; Wang, D.; Wang, J.; Wang, G.; Wu, X.; Liu, J. Power Transformer Spatial Acoustic Radiation Characteristics Analysis under Multiple Operating Conditions. Energies 2018, 11, 74.

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