Fact Sheet Kitty Hawk-Colington-Nags Head
Second 115kV Line
Project Purpose
The existing 115kV Line No. 52 from Kitty Hawk to Nags Head
is rated for 193 MVA. The 2004 summer peak was 144 MVA. The maximum load capacity
is forecasted to be reached by 2012. This single radial transmission line serves
approximately 25,000 customers. Excluding CHEMC load, improvements on our distribution
circuits have increased the tie capability to carry the load 95% of the year
and 79% of the time during summer peak. The 7.4-mile 2nd 115kV line will alleviate
overloading of the existing line, provide an additional transmission source
for the load area and improve reliability by eliminating outages for the single
contingency loss of the existing transmission source south of Kitty Hawk.
Location
The line will extend east from Kitty Hawk Substation on NCDOT
right of way on the south side of Route 1206. The single pole structures continue
along the eastside of Route 158 on NCDOT right of way to the existing transmission
structures south of Bonnett Street. An encroachment request for this project
was approved in March, 2005. View simulations
of the planned line and the structures
along Rt. 1206 and Rt. 158.
Planned System Improvements for the Outer Banks Service
Area
Express distribution circuit Kitty Hawk-Colington-Nags Head completed in
2004
Adding 3rd 230kV transmission line to Shawboro by May,
2005
Adding 75 MVA 230-34.5kV transformer at Kitty Hawk in June, 2005
Adding 33MVA 230-34.5kV transformer at Point Harbor in October, 2005
Adding new microwave communications for Kitty Hawk, Colington and Nags Head
by December, 2005
Adding this 115kV transmission line from Kitty Hawk to Colington in May,
2007
Extending 2nd 115kV transmission line from Colington to Nags Head in May,
2009
Benefits
Provides the necessary service to support the continued economic growth
in the Outer Banks
Provides an additional transmission source for the area
Eliminates overloading of the existing transmission source after 2012
Eliminates outages for the contingency loss of the existing transmission
source
Expedites the restoration of service to customers by minimizing outage frequency
and duration
Improves voltage stability during peak load periods
