高压电器2017，Vol.53Issue(7)：1-7,7.DOI:10.13296/j.1001-1609.hva.2017.07.001
特高压换流站冷却塔可听噪声测试与分析
Measurement and Analysis of Valve Outside Cooling Tower's Audible Noise in UHVDC Converter Station
摘要
Abstract
One of the main noise-generated equipments in the UHVDC (ultra high voltage direct current) converter station is valve outside cooling equipment.To obtain the noise characteristics of the equipment,this paper systematically measured and analyzed the audible noise of four water cooling towers outside valve in an UHVDC converter station using sound level meter and PULSE audio analyzer.The sound pressure level and noise spectrum of the cooling towers are obtained.According to the test and analysis results the following conclusions can be drawn:the sound pressure level with A weighting of measuring points distributed about 75 dB to 85 dB,the sound pressure level distribution of different cooling tower groups are very similar and the side where the fan installed is significantly greater than the other ones.The audible noise is a broadband noise which frequency component is rich.The maximum amplitude of the sound pressure appear at a frequency from 20 Hz to 50 Hz in noise frequency narrowband spectrum with Z-weighted and the maximum amplitude in 1/3 octave spectrum with A-weighted is reached at the frequency band with a center frequency of 1 600 Hz.The paper provides basis and guidance for converter station noise control technology.关键词
特高压换流站/冷却塔/可听噪声/声压级/噪声频谱Key words
UHVDC converter station/cooling tower/audible noise/sound pressure level/noise spectrum引用本文复制引用
戚岭娜,王延海,王荀,王召盟,王子建,徐志钮,尹婷..特高压换流站冷却塔可听噪声测试与分析[J].高压电器,2017,53(7):1-7,7.基金项目
中央高校基本科研业务费专项资金资助(2015MS92) （2015MS92）
国家电网公司科技项目(GY71-14-052).Project Supported by the Fundamental Research Funds for the Central Universities(2015MS92),the Research Project of the State Grid Corporation of China(GY71-14-052). （GY71-14-052）
