A common difficulty in the analysis and design of transmission and distribution lines is to determine a conductor’s tension and its static profile under concentrated loads. For relatively small concentrated loads (such as detuning pendulums on transmission lines), approximation methods may give good predictions. For large concentrated loads (such as fallen trees on distribution lines), however, exact solutions must be found. This paper presents methodologies to compute conductor tension and static profile in three-dimensional space using both approximate and exact solution procedures under concentrated loads with different boundary conditions. Practical engineering examples from galloping control of transmission lines and mechanical coordination of distribution lines are given to demonstrate the applicability of the theory.

CEA, 1992, “Modelling of Conductor Galloping,” Canadian Electrical Association, Technical Report, No. 321 T 672, Montreal, Quebec, Canada.
CSA Standard, 1990, “Wood Utility Poles and Reinforcing Stubs,” CAN/CSA-015-90.
Havard, D. G, 1981, “EPRI Research Program RP-1095, Galloping Control by Detuning, Progress Report No. 4,” Ontario Hydro Progress Report, No. 4, Ontario, Canada.
Havard, D. G., Pon, C. J., and Pohlman, J. C., 1985, “Field Evaluation of Galloping Control for Single and Bundle Conductor Lines,” CEA Conductor Vibration Workshop, Montreal, Canada.
Irvine, H. M., 1981, Cable Structures, MIT Press, Cambridge, U.K.
Salvadori, M. G., and Schwarz, R. J., 1954, Differential Equations in Engineering Problems, Prentice-Hall, Englewood Cliffs, NJ.
Wong, P. S., and Yu, P., 1993, “Mechanical Coordination of Overhead Distribution Line,” Distribution Technical Services Dept’s Report, B. C. Hydro, Vancouver, Canada.
This content is only available via PDF.
You do not currently have access to this content.