Dynamic modeling of AC iced insulator flashover characteristics

This work investigates the feasibility of using a dynamic arc modeling to predict flashover of ice-covered insulators. The proposed mathematical model includes the successive propagation of the arc. The input data of this self-consistent mathematical model are the insulator geometry, the ice layer characteristics and/or properties, the applied voltage and some initial values. The computed results are compared to the minimum flashover voltage measured experimentally on a IEEE standard insulator strings. The results indicate the feasibility of assessment of icing severity and flashover prediction, using the proposed model.