Photovoltaic array self-cleaning system

The invention relates to a photovoltaic array self-cleaning system. The photovoltaic array self-cleaning system comprises a mobile guide rail which is arranged along the surface of a photovoltaic array, a duct collector which is arranged on the mobile guide rail and can move under the effect of the mobile guide rail, and a control device which controls the dust collector to move and operate. The control device comprises a photoelectric sensor and a controller connected with the photoelectric sensor, and the controller is connected with the mobile guide rail and the dust collector. The photovoltaic array self-cleaning system is powered up by the photovoltaic array. The photoelectric sensor senses light intensity and transmits signals to the controller, the controller controls the dust collector to move along the surface of the photovoltaic array under the effect of the mobile guide rail according to the signals of the photoelectric sensor and starts the duct collector to collect dust, and therefore all areas of the surface of the photovoltaic array are cleaned. According to the photovoltaic array self-cleaning system, the surface of the photovoltaic array can be regularly subjected to dust collection and cleaning according to settings, on one hand, manual operation is reduced, and on the other hand, water resource waste caused by traditional water cleaning is avoided.