Line abnormal fault judgment method and system

The embodiment of the invention provides a line abnormal fault judgment method and system, and belongs to the technical field of fault detection of power transmission lines. The judgment method comprises the steps that audio data of a power transmission line in a preset time and a preset scene are acquired, the preset time is night, and the preset scene is remote outdoor; decomposing the audio data to obtain a foreground audio and a background audio; judging whether the background audio belongs to an on-site collected audio or not; and when it is determined that the background audio belongs to the on-site collected audio, using a preset network model to determine whether the power transmission line has a fault according to the foreground audio. Compared with the prior art, the judgment method and the judgment system provided by the invention have the advantages that the conventional manual inspection is replaced by adopting an audio judgment method, and the inspection efficiency of the power transmission line