特高压交流变电站噪声测量与分析  

Measurement and Analysis of Noise in UHV AC Substation

作　　者：周兵[1] 裴春明[1] 倪园[1] 张建功[1] 

机构地区：[1]中国电力科学研究院,武汉430074

出　　处：《高电压技术》2013年第6期1447-1453,共7页High Voltage Engineering

基　　金：国家重点基础研究发展计划(973计划)(2011CB209402-3)~~

摘　　要：为掌握特高压交流变电站厂界噪声水平,测量了站内变压器与电抗器的噪声水平及其频谱特性、衰减特性以及与功率负荷之间的关系。测量试验在正常运行及大负荷调试期间的特高压试验示范工程变电站进行,并对测量结果进行了进一步分析。结果表明,变压器噪声以中低频噪声为主,受冷却风扇影响较大,且与功率负荷近似正相关。电抗器噪声能量集中在中心频率为100Hz的1/3倍频带上,与功率负荷关系较小。变压器和电抗器噪声随距离增加而较慢衰减,因此变压器和电抗器应远离声环境敏感区域。另外,通过该研究,确定了正常负荷下特高压变压器和电抗器的A计权声功率级分别约为103dB和97dB,并获得了声源的1/3倍频带声功率级参数,为变电站噪声预测评价提供了基础数据。In order to obtain the boundary noise level in ultra-high voltage（UHV） AC substation, we measured the noise levels of transformer and reactor in station, as well as their spectral characteristics, attenuation characteristics and relationship to the power load. The measurement was mainly performed in a substation of UHV Test Demonstration Project in China, in its normal operation and load commissioning period, respectively. The measurement results were further analyzed. It is concluded that the noise of transformer is mainly at low and medium frequencieS, it is more influenced by cooling fan, and it has an approximate positive correlation with the power load. The energy of reactor noise concentrates on the 1/3 octave band centered at 100 Hz, while has little correlation with the power load. The noise of transformer and reactor slowly decreases with increasing the distance from equipment, so the transformer and reactor should not be placed close to environmentally-sensitive sound areas. In addition, we verified the A-weighted sound power levels of UHV transformers and reactors under normal load to he approximately 103 dB and 97 dB, respectively; we also obtained the parameters of sound power level in 1/3 octave band of the sound source, providing basic data for predictions and evaluations of substation noise.

关 键 词：变压器 电抗器 频率 噪声预测 声压级 特高压 

分 类 号：TM63[电气工程—电力系统及自动化] TM937.4