Power transmission line wildfire warning method

A power transmission line wildfire warning method. The method comprises the following steps: (1), geographical basic data of towers is collected; (2), a buffer area of a fire point is divided; (3), a tower nearby the fire point is searched for; (4), a power transmission line where the tower nearby the fire point is located is determined; (5), it is determined whether a channel is unimpeded, and if the channel is not unimpeded, the steps come to an end, and if the channel is unimpeded, the method enters step (6); (6), the distance between the fire point and the power transmission line where the nearby tower is located is calculated; (7), warning information is calculated, and the warning information is issued according to rules D-F. The present method: (1), has a rapid calculation speed and high efficiency; (2), avoids searching for out-of-domain towers; (3), simultaneously performs warning calculations on a plurality of fire points; (4), improves warning accuracy; (5), is more practical, and avoids repeated warnings with regard to a plurality of towers on a same power transmission line.