Optical visual tracking method and system for weak discharge positioning of surface defects of insulating part

The invention discloses an optical visual tracking method and an optical visual tracking system for weak discharge positioning of surface defects of an insulating part, which are mainly applied to weak partial discharge detection and positioning of the surface defects of the insulating part of GIS (Gas Insulated Switchgear) equipment and provide an available solution for the current situation that the partial discharge detection sensitivity and the anti-interference performance are poor in current practical engineering. An optical signal generated by weak discharge on the surface of an insulating part is received through the fluorescent optical fiber, optical signal gain and photoelectric conversion are completed by means of SiPM, and three-dimensional space positioning of a discharge source is obtained through analysis and calculation of the intensity of multiple paths of optical signals; the method has the beneficial effects that a new solution which is based on optical detection and is high in sensitivity,