摘要
本文对交流变电站内不同电压等级变压器、电抗器、变电架构以及冷却风机噪声特性进行现场测量,分析各主要噪声源设备时域波形、声压级以及频谱分布特性。结果表明:不同电压等级变压器噪声基本位于600 Hz范围内,高压电抗器噪声以100 Hz频率成分为主,电晕噪声具有短时脉冲性的特点且6 kHz范围内噪声能量较高,风机噪声频带较宽,其频谱中转动频率分量幅值最高。所得出的结论对于变电站噪声预测与控制具有参考意义。
In this paper,the noise characteristics of transformers,reactors,substation apparatuses and cooling fans of different voltage grades in AC substation are measured,and the time-domain waveform,sound pressure level and spectrum distribution characteristic of each main noise source are analyzed.The results show that the noise of different voltage transformer is practically within 600 Hz,while the noise of high voltage reactor is dominated by 100 Hz frequency.The corona noise reveals the characteristic of short-time pulse and high noise energy is within 6 kHz.The noise of fan shows wide band in the spectrum and its rotational frequency component gives the maximum amplitude.The conclusions can provide reference and guideline for substation noise prediction and control.
作者
魏慧杰
唐奇
胡伟
谢银娥
WEI Huijie;TANG Qi;HU Wei;XIE Yin′e(State Grid Shandong Electrical Engineering&Equipment Group,Jinan 250022,China;Hunan Xiangdian Test Research Institute Co.Ltd,Changsha 410004,China;State Grid Yueyang Power Supply Company,Yueyang 414000,China)
出处
《湖南电力》
2018年第2期21-24,共4页
Hunan Electric Power
