高压换流站交流滤波器组相干噪声源声功率反演*

针对高压换流站内交流滤波器组相干噪声源的声功率难以确定的问题，本文提出了一种基于几何声学理论的声功率反演方法。该方法采用可同时考虑噪声源强度和相位的几何声学理论建立相干声场模型，在此基础上构建声功率反演模型，通过寻找使声学模型输出和实测数据差异最小的声源参数（强度和相位），实现了对相干噪声源声功率的反演。数值仿真和实验数据验证了该方法的有效性。

Sound Power Inversion of coherent sources in AC filter group of high voltage converter stations

Aiming at the problem that it is difficult to determine the coherent noise source power of the AC filter in the high-voltage converter station, this paper proposes a sound power inversion method based on the geometric acoustic theory. This method uses geometric acoustics theory that can simultaneously consider the intensity and phase of the noise source to establish a coherent acoustic model. On this basis, a sound power inversion model is constructed. The inversion is achieved by finding the sound source parameters (strength and phase) that minimize the difference between the acoustic model output and the measured data. Numerical simulation and experiment data verify the effectiveness of the method.