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为获取运行中的特高压交流输电线路可听噪声水平及其特性,并对预测公式进行评估,该文在特高压交流试验示范工程沿线的河南焦作、湖北钟祥、湖北枣阳建立了3处电磁环境观测站,采用单倍频程、每分钟获取1组数据对可听噪声进行了长期测试,并对河南焦作5个月、湖北钟祥和枣阳各1年的有效数据进行了统计分析.结果表明:3处长期观测站雨天可听噪声和焦作观测站好天气可听噪声数据都基本符合正态分布,好天气下的可听噪声很小,与背景值基本相当,雨天可听噪声A声级与其8kHz分量的相关性较好.获取了可听噪声雨天统计值,并与BPA公式计算值进行了比较.最后,提出了BPA公式计算特高压交流单回输电线路可听噪声的修正方法.“,”In order to obtain the levels and characteristics of audible noise from actual UHV AC transmission lines in operation,three long-term observation stations for electromagnetic environment were established near the UHV AC demonstration project in Jiaozuo,Henan province,Zhongxiang and Zaoyang,Hubei province.Audible noise was continuously measured for a long time by one octave,one set of date per minute.Valid data from Jiaozuo for about five months,as well as valid data from Zhongxiang and Zaoyang through one year were analyzed.The results show that the long-term measured data of audible noise during fair weather in Jiaozuo,and data during rainy days in all the three stations conform to normal distribution.Moreover,audible noise during fair weather is very low,almost equal to the background value,and the A-weighted levels of audible noise during rainy days have a good correlation with its 8kHz components.The statistic analyses of audible noise during rainy days have been performed,and compared with the calculated values by BPA method.Finally,the corrected method based on BPA method to calculate the audible noise of UHV AC single-circuit transmission line has been proposed.