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Effect of Altitude on the Audible Noise Level of AC Power lines

Author

Listed:
  • Wangling He

    (School of Electrical Engineering, Wuhan University, Wuhan 430072, China)

  • Baoquan Wan

    (State Key Laboratory of Power Grid Environmental Protection (China Electric Power Research Institute), Wuhan 430072, China)

  • Lei Lan

    (School of Electrical Engineering, Wuhan University, Wuhan 430072, China)

  • Chunming Pei

    (Wuhan NARI Group Corporation, Wuhan 430074, China)

  • Jiangong Zhang

    (State Key Laboratory of Power Grid Environmental Protection (China Electric Power Research Institute), Wuhan 430072, China)

  • Yuchao Chen

    (State Grid Corporation of China, Beijing 100031, China)

  • Xiaoyue Chen

    (School of Electrical Engineering, Wuhan University, Wuhan 430072, China)

  • Xishan Wen

    (School of Electrical Engineering, Wuhan University, Wuhan 430072, China)

Abstract

The audible noise (AN) induced by corona discharge of AC transmission lines is more severe at high altitudes than at low altitudes; this has become a crucial limiting factor for the structural design of power lines and their environmental impact assessment. To determine the altitude effect and correction of AN level for AC power lines, a corona cage test system was used to measure the acoustic power level of four bundled conductors at five elevations, namely Wuhan (23 m), Tianshui (1100 m), Xining (2261 m), Gonghe (2943 m), and Yangbajain (4300 m). We obtained the AN characteristics for different altitudes, bundle numbers, and subconductor diameters through a statistical analysis of measured data. The analysis and comparison results indicate that the actual AN correction values are slightly less than the Bonneville Power Administration term of 1 dB/300 m at altitudes below 3200 m. Above 3200 m, the difference increases gradually. A correction term 2.85 dB/1000 m is recommended for more accurate evaluation.

Suggested Citation

  • Wangling He & Baoquan Wan & Lei Lan & Chunming Pei & Jiangong Zhang & Yuchao Chen & Xiaoyue Chen & Xishan Wen, 2017. "Effect of Altitude on the Audible Noise Level of AC Power lines," Energies, MDPI, vol. 10(7), pages 1-10, July.
    • Handle: RePEc:gam:jeners:v:10:y:2017:i:7:p:1055-:d:105477
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    Citations

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    Cited by:

    1. Jordi-Roger Riba & William Larzelere & Johannes Rickmann, 2018. "Voltage Correction Factors for Air-Insulated Transmission Lines Operating in High-Altitude Regions to Limit Corona Activity: A Review," Energies, MDPI, vol. 11(7), pages 1-14, July.
    2. Shilong Huang & Yunpeng Liu & Shaoshuai Chen & Guangyang Zhou & Wenbing Zhuang, 2018. "Corona Onset Characteristics of Bundle Conductors in UHV AC Power Lines at 2200 m Altitude," Energies, MDPI, vol. 11(5), pages 1-14, April.

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