Milton-Freewater, Oregon
OWNER—EURUS ENERGY AMERICA CORP.
San Diego, California
This project was designed and constructed to serve the 41 MW Combine Hills Turbine Ranch I. This project consists of forty-one 1-MW wind turbine generators. TriAxis performed complete design of the 10-mile-long 69-kV transmission line. TriAxis subcontracted to Wind Energy Constructors who acted as the EPC Contractor for this Eurus America project.
Nine miles of the line are built with 795 kcmil ACSR conductor and one mile has 397.5 kcmil ACSR. Due to the restrictions imposed by agriculture, roads, and other rights-of-way issues, the line consists of single-wood poles, wood H-frames, and self-supporting steel structures. The line has a section of 34.5-kV and a section of 2.5-kV underbuild with two BPA transmission line crossings.
PLS-CADD was used in all aspects of line design, including the development of structure models, the evaluation of strength and clearance requirements, and the production of plan and profile drawings. PLS-CADD provided a cost-effective solution to alignment changes required by the highway permit process. TriAxis services included specifications, bid document preparation, and services during construction.
