Technical brochure
TB 828 WG B2.58

Vibration Modelling of High Temperature Low Sag conductors – Self-damping characterization

High temperature Low Sag (HTLS) conductors are now installed regularly by some utilities around the world to increase the capacity of existing overhead lines and/or for other considerations. Electrical, thermal as well as mechanical aspects of HTLS conductors have already been covered in CIGRE Technical Brochures 331, 426, 695 and 763. To make sure that they will perform as expected over the long life of the line in which they are installed, the transmission line designers must be able to predict the behaviour of HTLS conductors with respect to aeolian excitation to avoid conductor failure due to fretting fatigue.

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Overhead lines

This Technical Brochure has been created by a Working Group from the CIGRE Overhead lines Study Committee which is one of CIGRE's 16 domains of work.
The field of activities of Study Committee B2 covers design, construction and operation of overhead lines. This includes the mechanical and electrical design of line components (conductors, ground wires, insulators, accessories, supports and their foundations), validation tests, the assessment of the state of line components and elements, maintenance, refurbishment
and life extension as well as upgrading and uprating of existing overhead lines.

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