Research Progress on Audible Noise Emitted from HVDC Transmission Lines

Li Li, Wei Meng (), Qi Li (), Yifan Wang, Xiaoguang Zheng and Hongbin Wang
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Li Li: Key Laboratory of Environmental Protection of Guangdong Power Grid Co., Ltd., Electric Power Research Institute of Guangdong Power Grid Co., Ltd., Guangzhou 510080, China
Wei Meng: Key Laboratory of Environmental Protection of Guangdong Power Grid Co., Ltd., Electric Power Research Institute of Guangdong Power Grid Co., Ltd., Guangzhou 510080, China
Qi Li: The Xuefeng Mountain Energy Equipment Safety National Observation and Research Station of Chongqing University, Chongqing 400044, China
Yifan Wang: Key Laboratory of Environmental Protection of Guangdong Power Grid Co., Ltd., Electric Power Research Institute of Guangdong Power Grid Co., Ltd., Guangzhou 510080, China
Xiaoguang Zheng: Key Laboratory of Environmental Protection of Guangdong Power Grid Co., Ltd., Electric Power Research Institute of Guangdong Power Grid Co., Ltd., Guangzhou 510080, China
Hongbin Wang: Guangzhou Power Supply Bureau of Guangdong Power Grid Co., Ltd., China Southern Power Grid, Guangzhou 510620, China

Energies, 2023, vol. 16, issue 12, 1-21

Abstract: The audible noise (AN) of DC transmission lines is a crucial factor affecting environmental assessment and electromagnetic design. In recent years, the public has paid increasing attention to the audible noise after the emergence of the HVDC technique. This paper emphatically reviewed the work investigating audible noise characteristics in both time and frequency domains, especially the correlation between sound and discharge. The proposed mechanisms of DC audible noise and the mitigating techniques are summarized, including the noise generation process, the physical models, the measurement method, and the mitigating technologies. It is found that the existing literature mainly focused on the prediction and characteristics of AN, the environmental factors which influence AN, and the methods to minimize AN emission. However, existing achievements still need to be improved to fully understand the mechanism of AN generation and solve the adaptability problem of AN prediction methods. The following aspects are valuable in future research: The correlation between audible noise and other corona effects will help solve the problem of difficulty in measuring audible noise in field condition; The corona discharge mechanism and weather resistance anti-corona coating when raindrops are attached to the surface of the transmission line, which will help guide the development and application of anti-corona coatings for the transmission line. Future research should also understand the mechanism of sound wave generation when considering the space charge effect.

Keywords: DC transmission line; audible noise; corona discharge; overview (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: 2023
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