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Cables and Overhead Electrical Conductors

Cable  and Overhead Electrical Conductor mechanical models are closely related. This can be seen from a recent review (January 2013) by Spak, K., Agnes, G. and Inman, D. : Cable Modeling and Internal Damping Developments, in the ASME journal Applied Mechanics Reviews, Vol. 65. The 18 pages paper, with its 86 references, has an interesting section on bending stiffness, with a rather (comparatively) extensive presentation of Papailiou’s stick-slip model. Use of the Coulomb spring-slider model for internal damping prediction is also presented. The paper is a useful categorization of the various approaches that have been proposed, while one of its conclusions is worth citing: “It is clear that there are many factors that can be included in cable models, and all have an effect on the cable response to some degree. It is up to the designer to determine which effects can be neglected based on the application, and to choose an appropriate model to find the optimal combination of accuracy and model complexity”. This, obviously, also applies to overhead electrical conductors.

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