About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
|
Symposium
|
Aluminum Alloys, Characterization and Processing
|
Presentation Title |
Characterization of Aluminium Conductors Steel Reinforced in Overhead Transmission Lines |
Author(s) |
Meysam Hassanipour, Miguel Diago Martinez, Denis Valiquette, Fédéric Guay, André Leblond |
On-Site Speaker (Planned) |
Miguel Diago Martinez |
Abstract Scope |
Extensive laboratory tests have been performed on 20 Aluminum Conductor Steel Reinforced (ACSR) conductors that were sampled from Hydro-Québec overhead transmission lines. Series of mechanical (tensile, torsion, wrap) tests along with metallographic analyses were carried out to reveal the mechanical properties and the remaining thickness of the coated zinc on steel strands. The age, geometry, current, and the type of environment corresponding to each ACSR conductor were considered to quantify the ageing and degradation behavior of conductors. It is shown that as the conductor ages, the zinc loss on steel strands triggers the decrease in mechanical properties. The aggressive environment induces a higher decrease in the remaining zinc thickness. However, a higher number of aluminum wire layers and diameters can retard this degradation. It was revealed that a low current transit through the wires might lead to higher degradation. |
Proceedings Inclusion? |
Planned: Light Metals |
Keywords |
Aluminum, Characterization, Environmental Effects |