Electrical Features of the Wallace Dam Pumped Hydro Project

The Wallace Dam Pumped Hydro Project was placed in full commercial operation in December 1980. This paper describes the significant features of this combination run-of-river and pumped storage project. Full-voltage, across-the-line starting is used for the 83,000 hp motors, making this the largest known unit using this starting method. The control system, using hard-wired, relay logic is also described.