ACSR/AW-TW type of overhead conductors utilize both advantages of trapezoidal aluminium wires and aluminium-clad steel core. The utilization of compact trapezoidal strands introduces a significant increase of approximately 20% in the aluminium part's cross-sectional area of the conductor. This, in turn, leads to a reduction in electrical resistance and energy loss. Implementing an aluminium-clad steel core instead of galvanized steel core, results in a noteworthy 5% decrease in electrical resistance and transmission line loss under equivalent loading conditions.
Technical Specifications:
ACSR/AW-TW type of overhead conductors utilize both advantages of trapezoidal aluminium wires and aluminium-clad steel core. The utilization of compact trapezoidal strands introduces a significant increase of approximately 20% in the aluminium part's cross-sectional area of the conductor. This, in turn, leads to a reduction in electrical resistance and energy loss. Implementing an aluminium-clad steel core instead of galvanized steel core, results in a noteworthy 5% decrease in electrical resistance and transmission line loss under equivalent loading conditions.
Conventional aluminium wires are typically characterized by a circular cross-section. However, an innovative alternative involves employing trapezoidal-shaped aluminium wires (TW) in lieu of circular wires, while maintaining the same aluminium content. By adopting this approach, the strength-to-weight ratio remains constant, but the integration of trapezoidal aluminium wires results in a more condensed overall conductor configuration. As a result, the overall diameter experiences a reduction of approximately 10% to 15%. These types of conductors, namely ACSR/AW-TW, due to the mentioned characteristics, are a very suitable option in transmission line projects with specific challenges, such as long routes, areas with harsh weather conditions (high corrosion or strong winds), or projects that require increased current carrying capacity in existing lines. Using these conductors, in addition to improving the electrical and mechanical performance of the line, can also help optimize long-term costs. In fact, reducing energy losses and increasing the conductor's lifespan are among the significant economic advantages of this type of conductor that should be considered in project lifecycle cost analysis.
ACSR/AW-TW advantages over typical ACSR conductors:
- Reduced Drag Force and Ice Accumulation
- Extended Span Lengths
- Improved Electrical Performance
- Extended Lifespan and Reduced Resistance