In recent years

accidents caused by the transmission line galloping have occurred frequently

which seriously threatens the safe operation of power grid.In order to realize the early warning and prevention of transmission line galloping

which could reduce the influence of transmission line galloping on the safe operation of power grid

an early warning method based on risk coefficient is proposed.The meteorological conditions which influence galloping are analyzed by associating historical galloping samples with meteorological data.On this basis

a risk coefficient covering wind speed and time of galloping is proposed to characterize galloping risk of transmission lines.According to the actual production demand

different risk levels of transmission line galloping are classified.Then an early warning model of iced transmission line galloping is established.The effectiveness of the model is demonstrated by using historical meteorological data of Henan power grid.