Next Article in Journal
A Novel Multi-Point Excitation Fatigue Testing Method for Wind Turbine Rotor Blades
Previous Article in Journal
High-Precision Spectral Decomposition Method Based on VMD/CWT/FWEO for Hydrocarbon Detection in Tight Sandstone Gas Reservoirs
Article Menu
Issue 7 (July) cover image

Export Article

Open AccessArticle
Energies 2017, 10(7), 1055; doi:https://doi.org/10.3390/en10071055

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

1
School of Electrical Engineering, Wuhan University, Wuhan 430072, China
2
State Key Laboratory of Power Grid Environmental Protection (China Electric Power Research Institute), Wuhan 430072, China
3
Wuhan NARI Group Corporation, Wuhan 430074, China
4
State Grid Corporation of China, Beijing 100031, China
*
Author to whom correspondence should be addressed.
Received: 15 June 2017 / Revised: 3 July 2017 / Accepted: 18 July 2017 / Published: 21 July 2017
(This article belongs to the Section Electrical Power and Energy System)
View Full-Text   |   Download PDF [3105 KB, uploaded 21 July 2017]   |  

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. View Full-Text
Keywords: ultra-high voltage AC power lines; corona performance; audible noise; high altitude correction ultra-high voltage AC power lines; corona performance; audible noise; high altitude correction
Figures

Figure 1

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).

Share & Cite This Article

MDPI and ACS Style

He, W.; Wan, B.; Lan, L.; Pei, C.; Zhang, J.; Chen, Y.; Chen, X.; Wen, X. Effect of Altitude on the Audible Noise Level of AC Power lines. Energies 2017, 10, 1055.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Energies EISSN 1996-1073 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top