Wilson constructed two 500kV substations intended to strengthen reliable energy needed for the Phoenix metropolitan area.
Sun Valley Substation
Wilson constructed a new 500/230kV substation, which included 35 acres of fenced area on a 98-acre site.
Substation installation included the following:
- Three-breaker 500kV ring bus with terminations for two 500kV lines and an autotransformer
- One 500kV 170-MVAR shunt reactor connected to the bus through its own breaker
- 500/230kV-34.5kV 672-MVA autotransformer
- Four-breaker 230kV ring bus with termination for three 230kV lines and an autotransformer
- Over 3,200 lf. of Trenwa.
- Five 100-ft. A-frames for 500kV and six 60-ft. A-frames for 230kV
- Pulling 148,000 lf. of control cable
Crews also installed station service, lighting, security, and other facilities to provide a complete working substation. In addition to installing substation equipment, work included site development, access roads, and landscaping.
Delaney Substation
This 500kV substation included a developed and enclosed 27-acre area.
Crews installed dead-end towers, bus work, and disconnects to create a main bus with switched taps to each line and switches to allow future construction. Doing so provided terminations of the Palo Verde – Delaney Line and the Delaney – Sun Valley Line.
Wilson also installed a 69/12kV power transformer, 12kV/480V station service transformer, switchgear, conduit, wire, and other materials.