Xcel Energy d/b/a Northern States Power Company – Wisconsin (NSPW) expects to have its Stinson to Bay Front 115-kV transmission line rebuild project in service in October 2014, Noel Klinnert, Xcel Energy project manager, told TransmissionHub on June 18.
According to the company, the project entails rebuilding 32 miles of existing 115-kV transmission line – W3315 – that extends from the Bay Front generating plant in Ashland, Wis., west to the interconnection with Superior Water, Light and Power Company at the Douglas/Bayfield county line.
The project includes using existing substation termination structures; building double-circuit steel pole structures from the Bay Front plant substation to just west of Highway 2 and relocating the existing 34.5-kV Bayfield line on a portion of the route; and relocating a portion of the existing 34.5-kV Bayfield line that is located adjacent to the Northern Great Lakes Visitor’s Center just west of Highway 2.
The existing 115-kV line is old – mid-1960s vintage – and has had extensive damage history due to woodpeckers, bears and carpenter ants, the company added.
While some structures have been replaced over the years, it is time for replacement of the entire line, using newer type structures to prevent ongoing damage and higher capacity conductor.
The larger conductor will help prevent overloads that may occur when other transmission lines in the area are out of service, the company added. In the first few miles west of the Bayfront generating plant, the new line will be built as double-circuit – to carry two transmission lines – in order to accommodate the existing 34.5-kV line that serves the Washburn and Bayfield area, that is located with, or adjacent to, the existing 115-kV line, from Sanborn Avenue, west to near Highway 2.
Klinnert said the project, which costs $21m, has received all of its permits.
Construction began on Sept. 1, 2012 and the project is expected to be in service on Oct. 17, 2014.
“It is possible to have an early in-service date; however all Public Service Commission of Wisconsin documentation indicates an Oct. 17, 2014 in-service date,” Klinnert added.