Full-automatic control method and system for dynamic water decontamination

The invention relates to a full-automatic control method and system for dynamic water decontamination. The method comprises the steps that S1, the pressure difference value generated by the water level difference between the front portion and the rear portion of the trash rack of the water inlet of the hydropower station is judged, and when the pressure difference value reaches a pressure difference threshold value, a trash remover is started; s2, by applying a fuzzy control intelligent control algorithm, the descending depth u of the trash remover is calculated, the underwater depth C1 to which the trash remover needs to descend is obtained, C1 = u + D, and D is the original height from the trash remover to the water surface; s3, the trash remover is controlled to descend, meanwhile, the trash remover is controlled to open a scraper bucket, when the trash remover reaches the position of C1, the trash remover is controlled to close the scraper bucket, and meanwhile D is adjusted to be C1; s4, the scraper buck