Open Access
ARTICLE
Investigation on Noise Pollution Comprehensive Treatment of Distribution Transformer in Living Area
Li Li1, Xiaopeng Fan1, Kecheng Wu2, Zhuanglei Zou1, Yongyan Zhou1, Dianhai Zhang3,*, Ziyan Ren3, Yanli Zhang3
1 Electric Power Research Institute of Guangdong Power Grid Limited Liability Corporation, Guangzhou, 510082, China
2 Guangdong Power Grid Limited Liability Corporation, Guangzhou, 510082, China
3 Shenyang University of Technology, School of Electrical Engineering, Shenyang, 110178, China
* Corresponding Author: Dianhai Zhang. Email: .
Sound & Vibration 2019, 53(6), 251-262. https://doi.org/10.32604/sv.2019.05252
Abstract
In the current paper, which deals with the noise pollution excited by
distribution transformers in the living area, a comprehensive treatment scheme
is put forward for the purpose of reducing the sound pressure level emitting into
the environment. In accordance with the associated test standard, the sound pressure levels of distribution transformer and surrounding environment are not only
tested but analyzed as well. The measurements were carried out with the frequency analysis of the 1/3 octave resolution, with the center frequencies at
125 Hz, 250 Hz, 400 Hz, and 500 Hz. As illustrated, on the basis of the measurement results, the frequency of noise at 500 Hz of distribution transformer causes
the major noise pollution in the surrounding environment. This measurement
result is in line with the noise frequency characteristics of distribution transformer.
There are two transmission routes of noise: i) the noise excited by distribution
transformer transmits by means of the wall of distribution room, and ii) part of
noise spreads through the ground of distribution room. Accordingly, acoustic
shield and vibration isolation device are applied for the reduction of the low frequency noise emitted through the above two paths. Aimed at applying the appropriate acoustic material and vibration mounting, the evaluation of the noise
reduction and vibration absorption is carried out in accordance with the sound
and vibration insulation theory. Following the noise treatment, the transformer
and environment noise are measured again. The corresponding findings shed light
on the fact that the sound level satisfied the requirement of limits of the ordinance.
The proposed noise treatment scheme can be applied to the existing power distribution facilities for controlling the sound levels that reach a point where it is comparatively more unobjectionable.
Keywords
Cite This Article
Li, L., Fan, X., Wu, K., Zou, Z., Zhou, Y. et al. (2019). Investigation on Noise Pollution Comprehensive Treatment of Distribution Transformer in Living Area.
Sound & Vibration, 53(6), 251–262. https://doi.org/10.32604/sv.2019.05252