高压电器2017，Vol.53Issue(8)：94-99,6.DOI:10.13296/j.1001-1609.hva.2017.08.016
特高压交流输电线路电磁场分布特性与纯声衰减规律研究
Research on Distribution Characteristics of Electromagnetic Field and Attenuation Law of Pure Sound for UHV AC Transmission Line
罗超 1方书博 2查智明 1韩晴 2姚为方 1华雪莹 1徐鹏 1张晓琴2
作者信息
- 1. 国网安徽省电力公司电力科学研究院,合肥230601
- 2. 国网电力科学研究院武汉南瑞有限责任公司,武汉430074
- 折叠
摘要
Abstract
The influence of low-frequency noise on health of the residents along UHV AC transmission line corridor cannot be ignored.Especially,the influence of AC pure sound is worse due to its longer propagation distance and slower attenuation.In order to understand the distribution law and influence of AC pure sound,this study measured three kinds of pure acoustic frequency noise of respective 50,100,and 200 Hz under the straight-line tower and strain tower of UHV AC double-circuit transmission line on the same tower,and obtained the corresponding spectrum histogram,waterfall chart,and electromagnetic field versus distance curve.The change law of different frequency noise with the distance was analyzed.The results showed that the noise with different low frequency exhibited discrepant attenuation according to the distance from the line center,and the maximum 50 Hz noises were 42.4 dB and 49.3 dB at line center and the position 20 meters away from the side-phase conductor,respectively,which were both within the limit of noise emission standard in the daytime for industrial enterprises.Analysis on DTH sound and measurement of electric field at certain height of umbrella surface prove that the electric field is susceptible to distortion to produce audible noise,and the 4 kV/m is the very electric field intensity starting to produce noise when human or other objects move under the transmission line.关键词
交流纯声/特高压同塔双回线路/频谱直方图/噪声排放标准Key words
AC pure sound/UHV double-circuit transmission line on same tower/spectrum histogram/noise emission standard引用本文复制引用
罗超,方书博,查智明,韩晴,姚为方,华雪莹,徐鹏,张晓琴..特高压交流输电线路电磁场分布特性与纯声衰减规律研究[J].高压电器,2017,53(8):94-99,6.
