NUMERICAL SIMULATION AND EXPERIMENTAL EVALUATION OF BENDING DEFLECTION OF TRANSMISSION LINE CONDUCTOR

Cable bending models are generally proposed with bending stiffness computations in two extreme ranges namely, a monolithic behaviour with maximum bending stiffness and a loose wire assembly, with a minimum bending stiffness. But the bending stiffness of a cable in a realistic situation, varies as per the coefficient of friction present in the wire interfaces. Since enough theoretical models are not available for this situation, it is proposed to adopt a numerical simulation procedure to evaluate the deflection at various locations of an axially loaded cable under cross load influence and to experimentally verify it,to give a first-hand knowledge of the variation of deflection and hence bending stiffness across a cable length. Both the numerical computation and experimental verification are carried out with a single layered ACSR Racoon Conductor, used in overhead transmission lines.