CAJ | 학술논문

输电线路可听噪声是影响750kV及以上电压等级输电线路架设的重要因素之一,在线路设计之初应充分考虑。为此,介绍了利用电晕笼预测线路可听噪声的方法,通过武汉特高压交流试验基地的电晕笼开展了8分裂LGJ630导线可听噪声试验,得到了单位导线的可听噪声产生功率,同时,结合美国邦维尔水电局（BPA）计算公式和美国电力科学研究院（EPRI）计算公式,分别采用这3种方法预测了特高压交流试验基地的同塔双回试验线路可听噪声。通过将3种方法的预测结果与试验线段实测结果进行比对,发现通过电晕笼预测的结果比实测的L50噪声值小0.21dB,较接近实测结果,说明采用特高压电晕笼预测输电线路可听噪声是可行的。该文研究结果可为我国输电线路可听噪声预测提供指导。
수전선로가은조성시영향750kV급이상전압등급수전선로가설적중요인소지일,재선로설계지초응충분고필。위차,개소료이용전훈롱예측선로가은조성적방법,통과무한특고압교류시험기지적전훈롱개전료8분렬LGJ630도선가은조성시험,득도료단위도선적가은조성산생공솔,동시,결합미국방유이수전국（BPA）계산공식화미국전력과학연구원（EPRI）계산공식,분별채용저3충방법예측료특고압교류시험기지적동탑쌍회시험선로가은조성。통과장3충방법적예측결과여시험선단실측결과진행비대,발현통과전훈롱예측적결과비실측적L50조성치소0.21dB,교접근실측결과,설명채용특고압전훈롱예측수전선로가은조성시가행적。해문연구결과가위아국수전선로가은조성예측제공지도。
The audible noise from transmission lines is one of the factors influencing 750 kV and above voltage grade transmission lines' construction, so it should be fully considered at the beginning of line design. We introduced a method of using corona cage to predict the audible noise from transmission lines. First, we carried out tests on the eight-bundled LGJ630 wire and got the audible noise generating power of the unit wire in UHV corona cages of Wuhan UHV AC Test Base. Then, we calculated the audible noise of the double-circuit line in the test base by using the BPA calculation formula, EPRI calculation formula, and the test results of corona cage. Prediction results of three methods were compared with the measured results from testing lines. It is found that the prediction result of audible noise by using corona cage is 0.21 dB less than the measured value of L50, and turns out to be the closest one to the measured data. The results confirm that it' s effective to predict the audible noise of transmission lines by UHV AC coronacage. Conclusions in this paper provide guide for audible noise prediction of transmission lines.