Abstract
A method has been developed to predict the probability of a double circuit outage on double circuit lines. Traveling wave techniques are used to account for nonlinearities such as corona, attenuation, and phase conductor flashover as its time iterative approach enables alteration of design parameters at each time increment. A geometrical model technique, involving comparison of lightning voltages measured on the models with those obtained from linear traveling wave calculations, enables realistic estimation of the value ascribed to tower surge impedance, an important parameter in the calculations.
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