Method for calculating tree felling range below power transmission line

The embodiment of the invention discloses a method for calculating a tree felling range below a power transmission line, and the method is characterized in that the method comprises the steps: 100, obtaining a sag parameter of a wire between two towers of the power transmission line; 200, according to the wire sag parameters, calculating the width values between the conductor and the forest area in the static state, the maximum windage yaw state and the middle deflection angle state; and step 300, taking the maximum width value and margin value of the wire in the three states as a final felling range. According to the method, the offline tree felling range is calculated through the conductor sag between the two towers of the line, specifically, the distance between the forest area and thewire under the static state, the maximum distance state and the middle deflection angle state of the conductor is calculated according to the determined conductor parameters, and the width of the treefelling range is obtained