The invention discloses a
power grid icing starting time calculation method based on
air movement calculation. The method comprises the following steps of: 1,
observation data obtaining; 2,
data grid processing; 3, frontal line point screening; 4, secondary high barometric pressure edge point screening; 5, distance calculation; 6,
cold air moving speed calculation; 7, frontal line point moving time calculation; and 8,
icing time calculation. The method has the following advantages: the method fills the technical blank of lack of a
power grid icing starting time calculation method based on
air movement calculation at present, is applied to icing starting time prediction of all easily iced points of a
power grid, and is simple in calculation operation and high in practicality.
Stress conditions of frontal line points are taken into consideration, a movement equation of the frontal line points is established, the movement time is calculated, the icing starting time is calculated accordingly, and thus the accuracy is high. The
power transmission line icing starting time obtained through calculation provides a scientific reference basis for disposition of deicing work during a power grid icing period in winter.