Hydrophobicity live-line online monitoring method and system for composite insulator

The invention discloses a hydrophobicity live-line online monitoring method and system for a composite insulator. The hydrophobicity live-line online monitoring system comprises a water spraying module, an image acquisition module, an information transmission module, a controller and an upper computer. The water spraying device is used for spraying water to the composite insulator; the image acquisition module is used for carrying out image acquisition on the composite insulator; the controller is used for receiving an operation instruction of the upper computer through the information transmission module, controlling the water spraying device to spray water and controlling the image acquisition module to acquire an image, and is also used for sending the image data to the upper computer through the information transmission module; and the upper computer is used for receiving a control instruction and sending the control instruction to the controller through the information transmission module, is used for re