Audible Noise Performance of Conductor Bundles Based on Cage Test Results and Comparison with Long Term Data

作者：Wan, Baoquan; He, Wangling^*; Pei, Chunming; Wu, Xiaorui; Chen, Yuchao; Zhang, Yemao; Lan, Lei

来源：Energies, 2017, 10(7): 958.

DOI：10.3390/en10070958

• UHV AC power lines
• corona performance
• audible noise
• acoustic power

A reasonable acoustic power formula is vital to precisely evaluate the audible noise (AN) level of ultra-high-voltage (UHV) AC power lines. This study derived a formula by taking several AN measurements under heavy rain conditions, using multiple conductor bundles in a UHV corona cage, and then subjecting these measured values to least squares fitting. The validity of the proposed formula was subsequently verified with statistical data obtained from two long-term stations at Henan and Hubei Province, which are located under the Jindongnan-Nanyang-Jingmen UHV AC transmission lines operating at 1000 kV. The deviation between the prediction and the long-term (L50) value was 0.76 dB for the Henan station and 0.17 dB for the Hubei station. It shows that the acoustic power formula derived in this paper is more accurate than the widely used Bonneville Power Administration formula, in which the corresponding deviations are much larger (3.07 and 2.53 dB).

• 出版日期2017-7
• 单位国网电力科学研究院; 武汉大学; 中国电力科学研究院