Noise fault positioning detection method and system for power equipment

The invention provides a noise fault positioning detection method and system for power equipment, and relates to a fault positioning technology, and the method comprises the steps: collecting the sound source information of the power equipment in a target region in real time through a sensor array, carrying out the feature extraction of the sound source information, determining the acoustic features corresponding to the sound source information, and carrying out the detection of the noise fault. Performing feature selection on the acoustic features based on relevance between the acoustic features and pre-acquired historical target features to obtain screening features corresponding to the acoustic features; mapping the screening features into a target space, extracting multi-scale envelope information corresponding to the screening features in combination with time information corresponding to the screening features, and creating a noise image corresponding to the sound source information in combination with