Built on the highly evolved foundation of aerospace derived carbon fibre hybrid composites, the ACCC® conductor utilizes a high strength, light weight and dimensionally stable single strand composite core that is stranded with trapezoidal shaped aluminium wire. ACCC® conductor offers superior performance and capacity compared to conventional conductors of the same diameter and weight.
- Increase line capacity
ACCC® conductor can carry up to twice the current of conventional steel-reinforced conductors due to its high temperature capability.
- Mitigate thermal sag
ACCC® conductor’s carbon composite core has a much lower coefficient of thermal expansion compared to steel, aluminium, or other core materials.
- Reduce line losses
Under equivalent load conditions, ACCC® conductor reduces line losses by 30 to 40% compared to steel-reinforced conductors of the same diameter and weight.
- Improve system efficiency
ACCC® conductor’s additional annealed aluminium content improves conductivity and reduces line losses, which can improve overall system efficiency.
- Decrease project costs
ACCC® conductor can reduce the cost of upgrading existing lines or new corridors due to its greater strength, reduced sag, and increased capacity.
- Reduce generation requirements, conserve fuel & reduce emissions
ACCC® conductor’s ability to reduce line losses can provide significant reductions in fuel consumption and their associated emissions for fossil fuel sources or improve the overall efficiency and economic performance of renewable resources. Increased power delivery can also reduce the demand for new sources of energy.
- Reduce electro magnetic field level
ACCC® conductor’s smaller thermal elongation coefficient may result in a reduction of the magnetic field under the line due to its maintaining greater clearance distance at the same current level.
- Upgrade the capacity of existing lines
ACCC® conductors can be used to increase the throughput of existing lines with little or no modifications to the structures due to its greater capacity under similar tower loading conditions.
- Improve the performance and economics of new lines
ACCC® conductor’s greater strength, improved sag characteristics, and higher electrical capacity can improve the performance and reduce the costs of new transmission and distribution lines by delivering more power with less losses and reducing structural costs. ACCC® conductor can be installed without special equipment or tools and with minimal training.
- Accommodate long spans and river crossings
ACCC® conductor can accommodate long spans and river crossings due to its higher strength, greater thermal stability, and improved self-damping characteristics.
- Connect renewable resources more efficiently
ACCC® conductor can be used to connect renewable resources more efficiently by reducing structural costs through increased spans, while also delivering more power by reducing line losses, which can improve initial and overall project economics.
- Reduce maintenance costs and improve longevity
ACCC® conductor’s non-corrosive composite core resists environmental degradation and can also reduce costs associated with vegetation maintenance due to its reduced sag; and under severe weather conditions, such as ice and wind load events resists failure due to its greater strength.
In 2007, Elia was informed that an industrial plant was going to commission a new 400MVA production unit and deliver power to the Belgian transmission network by 2010. A small coal fired production unit some 20 km further down was going to be shut down around the same time. Load flow studies examining system reliability at N-1 showed that a 20km long double-circuit 150 kV connection would be overloaded under certain conditions.