Comparative Study of Mechanical Properties of Aluminium Wires from New and Used ACSR Conductors

Abstract:

As a key component of high-voltage power lines, aluminium clad steel reinforced (ACSR) conductors must have adequate mechanical properties that ensure running safety. This paper presents the results of experimental and theoretical analysis of spiral stranded conductors that consist of a core with two layers of steel wires and three layers of aluminium wires. Tests were performed using two ACSR conductors of the same type, one new and the other 40-year-old, used for a 220 kV power lines. In service, the conductors can be subjected to additional stresses, which may lead to accelerated deterioration and premature failure. In order to provide reliable results, the tests were performed in similar conditions and using the same equipment for both strands. Comparison of results highlighted the influence of the service time on the mechanical properties.On the other hand, the degradation was decisively influenced by the position of the layer. The mechanical properties of the aged conductor are adequate even after 40 years in service. The most advanced degradations are near the clamping area, therefore intensive inspection and maintenance are recommended.

• Periodical: Solid State Phenomena (Volume 254)
• Pages: 159-163
• DOI: https://doi.org/10.4028/www.scientific.net/SSP.254.159
• Online since: August 2016
• Authors: Daniel Achiriloaiei*, Lorand Kun, Cristian Sorin Nes, Ion Dumitru
• Keywords: Bending, Shear, Tensile, Torsion, Wire

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