The ACCC® Composite Core has survived a tornado strike, wild fire, direct rifle shot, and crane strike; all real-world examples of proven resiliency. The hybrid composite core of the ACCC® Conductor in conjunction with the trapezoidal aluminum strands allows ~28 % more aluminum without a diameter or weight penalty compared to an ACSR (steel core) conductor. This, along with the thermal properties of the composite core, essentially doubles the ampacity of the line and can reduce associated line losses by up to 40%. The resulting ability for grid operators to redirect current through this added capacity in order to avoid overheating adjacent lines during an outage, is an added benefit to any utilities’ Grid Resilience.
There are multiple economic factors to consider when looking into grid resilience as it relates to overhead powerlines and electrical grids. When a line falls to the ground, a utility must get multiple crews, with heavy expensive equipment, and entire reels of conductor onsite for a repair. In the case of a wildfire or tornado however, ACCC Conductor has allowed a single crew to go out and install a repair sleeve, or even simply attach the conductor to replaced insulators and towers, and get power back on within a fraction of the time and at a fraction of the cost.
Another economic factor to consider is the value of crews and equipment in the wake of a natural disaster. Commonly in times like these, crews and equipment associated with overhead line repair come at a premium due to extremely high demand. The ability to save a crew’s time, free up equipment, and use altogether less resource can offer huge savings as well.
Outage time is often the most forward-facing cost people consider when a line comes down. The 2003 Northeast Blackout for example, contributed to at least 11 deaths and cost an estimated $6 billion when said and done. Outages not only have the obvious costs associated with no longer being able to sell power to customers, but almost all businesses affected by the blackout are not able to contribute to the economy as they normally would.
The composite core of the ACCC conductor is not only highly resistant to the thermal sagging thought to have possibly caused many recent outages but is also able to handle the elevated temperatures of redirected current, and greatly reduce the associated repair and outage costs when exposed to an adverse event.