摘要
分析了换流变压器、平波电抗器、交流滤波器组和阀冷设备的噪声机理,并根据实测噪声频谱所显示的,肇庆换流站声源具有声级高、频带宽且低频段有峰值的特点,计算分析得出相应的治理方案指标:换流变压器的降噪量为15dB(A计权,下同);平波电抗器的降噪量为10dB;交流滤波场加装隔声屏障的降噪量要达到8dB以上。肇庆换流站噪声治理工程实施后,降噪效果明显,昼间噪声值不大于55dB,夜间噪声值不大于45dB。
The noise-generation mechanism of the equipments such as converter transformer, smoothing reactor, AC filter group and valve cooling equipment is analyzed. The frequency spectrum measured in Zhaoqing Converter Station reveals that the sound source has characteristics of higher level, wider frequency band and peak value at low-frequency. Based on the analysis, a noise-reduction scheme is designed with targets of noise reduction quantities for converter transformer, smoothing reactor and AC filter group being respectively 15 dB, 10 dB and 8 dB. After the noise-reduction project is carried out, the noise in the station has been reduced obviously to the levels of less than 55 dB on day and less than 45 dB at night.
出处
《南方电网技术》
2009年第1期49-52,共4页
Southern Power System Technology
关键词
换流站
噪声
治理
converter station
noise
treatment
