Learn how modern technology is improving the electric power grid

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Learn How Modern Technology is Improving the
Electric Grid Power

www.ctcglobal.com

Sep  2020
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Introduction

• CTC Global is an ACCC conductor
  manufacturing company that was founded to
  develop, certify and deploy advanced technologies
  to improve the efficiency, capacity, reliability
  and resiliency of the electric power grid.
• Our primary product is high-capacity, low-sag
  CTC Global ACCC Conductor solutions.

www.ctcglobal.com
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How it used to be before 

• The For over one-hundred years, electricity has
  been delivered to consumers using bare overhead
  conductors that were made up of conductive
  aluminum strands wrapped around a core that
  consisted of steel wires.
• The steel wires were used to augment the strength
  of the conductive aluminum strands, which, in
  their most corrosive-resistant alloy, offered
  reasonable conductivity and modest tensile
  strength. 

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What changed when demand for electricity grew

• As demand for electricity grew and new sources of
  generation were brought on line, many
  transmission and distribution lines became
  thermally constrained. This is due to the fact
  that, as electrical current increases, the
  temperature of the conductor rises. 
• The increase in conductor temperature is a
  function of the electrical resistance of the
  materials utilized.  Unfortunately, as aluminum
  wires are heated above 95C, they begin to
  anneal which causes a substantial loss of
  strength.

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Upgrading existing transmission corridors without
structural modifications

• Recognizing the challenge of increasing
  transmission line capacity, mitigating thermal
  sag, and improving conductor efficiency, CTC
  Global, of Irvine, California, USA, began
  developing the patented ACCC conductor in 2002. 
• As the project evolved, CTC Global developed a
  hybrid carbon and glass fiber core that resisted
  degradation from UV, chemical, thermal, and
  cyclic load fatigue that had previously plagued
  non-ceramic polymer insulators (NCIs). 
• With a clear understanding of how to mitigate
  these and other environmental challenges, CTC
  Global began developing ISO certified
  manufacturing techniques and tooling to allow the
  cost-effective and continuous production of a
  pultruded composite core that utilized carbon and
  boron-free glass fibers embedded in a high grade
  thermoset resin. 

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Upgrading existing transmission corridors without
structural modifications

• While the carbon and glass fibers provide the
  composite cores high tensile strength, the
  hybrid resin system helps improve the composite
  cores flexural strength and effectively balances
  load sharing between the fibers, so they perform
  in a unified, composite manner. 
• While CTC Globals initial goal of increasing
  line capacity without exceeding sag limitations
  was readily achieved, other advantages also
  became apparent.
• As with Boeing, Airbus, NASA and other
  manufacturers who are relying on carbon hybrid
  composites to increasingly greater extents not
  only for their improved strength to weight
  characteristics and corrosion resistance, but
  especially for their resistance to cyclic load
  fatigue CTC Globals ACCC conductor raised the
  conductor longevity bar substantially. 

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ACCC Conductor enables longer spans on new
transmission corridors

• While the ACCC conductors greater strength and
  improved thermal stability can enable longer
  spans between fewer and/or shorter structures on
  new transmission corridors which serves to
  reduce capital costs the ACCC conductor is also
  ideally suited for re-conductoring projects,
  because it is capable of carrying approximately
  twice the current of a conventional ACSR
  conductor without exhibiting excessive thermal
  sag.

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Contact Us 

• Website www.ctcglobal.com
• Phone [phone]
• Fax [phone]
• Email info_at_ctcglobal.com
• Thank You