Study on impact of wind on jump height of a heavily iced transmission conductor following ice shedding

Ice shedding from heavily iced transmission lines frequently causes significant vertical vibration responses, which may result in damage to transmission structures and line flashovers. Most existing research on conductor jump behavior after ice shedding focuses predominantly on ice shedding events alone, without considering the influence of wind during the shedding process. This paper introduces a finite element approach to assess the dynamic behavior of transmission conductors under the combined effects of wind and ice-shedding. A typical iced two-bundled conductor with ice bridges serves as the subject for this study, and the finite element method is utilized to model the jump height of the conductor under these combined forces. Furthermore, a parametric study examines the influence of critical variables such as wind speed, attack angle of wind, and the rate of ice shedding on the jump height of heavily iced conductors under the interaction of wind and ice-shedding. This research offers valuable insights for the design of transmission lines in regions prone to heavy icing.