基于声强法的电力电容器噪声的测试与分析

Test Analysis on the Noise of Power Capacitor Based on Sound Intensity Measurement

电力电容器的噪声控制问题越来越受到关注,文章通过P-P声强法对某型电力电容器的噪声辐射进行了测试与分析。给出了其噪声辐射的频谱和各测量面上的声强云图,并计算了电力电容器噪声辐射的声功率级。通过对测试结果的分析,得到了电力电容器噪声辐射的特性,为电力电容器的降噪提供了有效的参考。

The noise emitted by power capacitors is being paid more and more attention to worldwide. This pa- per investigates the noise emitted by a kind of power capacitor through the P-P sound intensity method. The noise spectrum and the contour of the sound intensity of each measured surface are presented and the sound power level is calculated. The characteristics of the noise have obtained through the analysis on the test results, thus provide a valid reference on the noise reduction of the capacitor.