摘要
超高压变电站的主变压器的噪声影响已引起广泛关注。以某典型化设计的500kV变电站A的主变压器为例,进行了现场测试,得到其主变压器噪声能量主要集中在中低频范围内,且具备明显的线谱噪声特征。针对该噪声特点,提出了一种内插微穿孔板的双层带孔板型声学超材料的复合隔声结构。使用传递矩阵理论对该复合结构进行了分析,并在阻抗管中进行了实验验证。实验结果表明:该复合隔声结构具备针对性隔声要求,理论与实验传递损失曲线基本吻合。
The noise impact of the main transformer of an ultra-high voltage substation has attractedwidespread attention.The main transformer of a typical designed 500 kV substation A was taken as an example to test its noise situation.The results show that the main transformer noise energy is mainly con-centrated in the low and medium frequency range,and has the characteristics of line spectrum.For this noise characteristic,a composite acoustic insulation structure is proposed which is composed of a double-layer per-forated plate-type acoustic metamaterial and an interpolated microperforated panel.The composite structureis analyzed using transfer matris theory and experimentally verified in an impedance tube.The experimental results show that the composite sound insulation structure has targeted sound insulation requirements,and the theoretical and experimental transmission loss curves basically match.
作者
王坤
谢连科
邢拓
巩泉泉
张国英
朱亦丹
WANG Kun;XIE Lianke;XING Tuo;GONG Quanquan;ZHANG Guoying;ZHU Yidan(State Grid Shandong Electric Power Rescarch Institute,Jinan 250003,China;Institute of Urban Safety and Ervironmental Science,Beijing Acadermy of Science and Technology,Beijing 100054,China)
出处
《应用声学》
CSCD
北大核心
2024年第2期315-320,共6页
Journal of Applied Acoustics
基金
输变电工程职业健康影响自动化预测与评估关键技术研究(2021A-117)。
关键词
主变噪声
低频隔声
带孔板型超材料
微穿孔板
Main transformer noise
Low frequency sound insulation
Plate-type metamaterials with perfo-rated
Microperforated panel
