Three-phase testing facilities at EPRI´s project UHV

A description is given of the expanded facilities at Project UHV for the study of UHV ac transmission up to 1500 kV. These include a three-phase test line for full scale tests on a large variety of line configurations, three single phase transformers for 1500 kV line-to-line, much associated electrical and mechanical equipment, and instrumentation for the acquisition of electrical and meteorological data. The three-phase UHV test line has been energized since January 1975 and full scale testing on 1000 - 1500 kV transmission lines is in progress.