## 1 Introduction
used ABAQUS software ([[https://www.ansys.com/](https://www.ansys.com/)]([https://www.ansys.com/](https://www.ansys.com/)), 12 May 2024) to investigate a seven span continuous transmission line numerical model, and analyzed the dynamic responses of multiple-span transmission lines with different structural parameters after different rates of ice shedding, and proposed a quantitative relationship and linear calculation formula between the sag difference and the maximum ice bouncing height according to the simulation results [14]. In order to verify the validity of a numerical simulation of ice shedding bouncing, [PERSON] et al. built a full-size transmission line test model, simulated the ice shedding responses processes of single span, two span and three span conductors by remote control centralized load shedding, and investigated the changes in conductor displacement, tension, and swing angle of insulator strings [15]. [PERSON] et al. used a 220 kV transmission line as a prototype, and based on dynamic similarity theory, designed a 1:20 scale double-span transmission line model to realize the transient response under many conditions, such as zipper ice shedding, synchronous ice shedding, full ice shedding, and local ice shedding [16]. [PERSON] built a finite element model of a 500 kV overhead line and studied the effect of different spacer arrangement schemes on ice shedding suppression [17]. In order to analyze the impact of strong winds on iced conductors, [PERSON] et al. designed a 3D tower-line model to study the incremental relationship between the design wind speed and the amplification factor of the tower-line coupling effect based on measured data [18]. [PERSON] et al. established a finite element model of a tower-line system and used the harmonic superposition method to simulate the time course of the pulsating wind speed at the height of the conductor to explore the effect of the pulsating wind speed on the bouncing process induced by ice shedding [19]. Other studies have analyzed the effects of icing morphology and wind attack angle on icing protection, respectively [20; 21]. [PERSON] et al. considered the sudden change in the wind load caused by changes in the aerodynamic shape and the aerodynamic parameters at the moment of ice shedding, and analyzed the functional relationship between the maximum ice shedding jump height of a conductor and the difference in the sag in the stationary state before and after ice shedding [22]. The calculation formulas obtained from the above literature [23] are mostly aimed at a specific working condition and are no longer applicable to the ice shedding situation under the coupling effect of ice and wind. In addition to the factors mentioned above, iced conductors with different shapes experience even more complex forces under the action of wind angles. Significant wind deflection of iced conductors leads to lateral elastic potential energy, which has a clear impact on the dynamic response of ice shedding. Therefore, the ice shedding process of overhead lines under strong wind conditions constitutes a complex fluid-structure coupled vibration process. After ice shedding, the transmission line transitions from simple vertical motion to 3D motion, rendering traditional prediction methods inadequate. In this paper, a continuous overhead conductors model was established to analyze the influence of strong winds, ice shape, wind attack angle and other complex factors on the ice shedding jumping of transmission lines, and to explore the risks caused by the ice shedding jumping under complex working conditions. Moreover, the lateral displacement of conductors caused by ice shedding under strong winds was studied, and the possibility of discharge between horizontally arranged conductors was explored. The structure of this paper is as follows. In Section 1, the complex working conditions and forces of iced conductors under strong wind conditions are analyzed.