Power distribution network operation and maintenance inspection method

The invention discloses a power distribution network operation and maintenance tour inspection method, and relates to the technical field of power distribution network tour inspection, and the method comprises the steps: setting a regional tour inspection point, carrying out the image collection of tour inspection equipment at the regional tour inspection point according to a fixed tour inspection period, calculating the flight height and tower distance of the tour inspection equipment, obtaining a bias coefficient, and carrying out the operation and maintenance tour inspection according to the bias coefficient; the collected image is restored in a space rectangular coordinate system, the position of an object in the image is obtained, then distance calculation is carried out on position coordinates of the object and a cable, a foreign matter distance value between a foreign matter and the cable in the inspection area is obtained, meanwhile, a safety threshold value is set, the safety threshold value and the