Partial discharge detection technology of transmission line based on acoustic diagnosis of UAV

Aiming at the low effectiveness of partial discharge detection of transmission lines and large environmental interference, the acoustic diagnosis technology of transmission lines based on UAV is studied. Firstly, the noise characteristics produced by the UAV itself and its impact on the sound source are analyzed. For the noise of UAV, the physical noise reduction method of wire rope damping structure and silencing structure can effectively reduce the noise interference, and the signal-to-noise ratio can be further improved by noise separation technology and wavelet packet decomposition and reconstruction. Finally, through the detection of abnormal noise of the line tower, the rationality of the partial discharge detection technology based on acoustic diagnosis is verified.