Contents I. Introduction
The wind deflection fault of power lines is a common fault that occurs frequently during the working operation of high-voltage transmission lines [1]-[2]. Because the power line is usually exposed to the natural outside world, the transmission line insulator string and wire in the strong wind, rain, hail, and other external factors and the common influence of the line’s own structure and parameters lead to an increase in the wind deflection angle of the transmission line wire, while the wire will have different degrees of displacement, which will lead to a reduction in the transmission line air gap, when the gap caused by the wind deflection angle is less than the transmission line wire work allowed value. When the gap caused by the wind deflection angle is less than the allowable value of the transmission line wire work, a breakdown discharge will occur, which will lead to a wind deflection flashover accident, resulting in a large area blackout and a great threat to the safety of power supply to the grid [3]-[5].
