Preliminary Design Study of Underground Pumped Hydro and Compressed-Air Energy Storage in Hard Rock Volume 2: Project Design Criteria—UPH

摘要

This volume documents the design criteria for an underground pumped hydro¬electric (UPH) storage facility having a maximum generating capacity of 2000 MW and a storage capacity of 20,000 MWh at a nominal head of 5000 ft. The UPH facility is a "two step" configuration with single-stage reversible pump-turbines, each step consisting of a 1000 MW plant at a nominal head of 2500 ft. Overall design criteria including operating requirements, civil/structural criteria, geotechnical criteria, mechanical criteria and electrical criteria are detailed. Specific requirements are given for the upper reservoir, intake/ outlet structure, penstock and draft tubes, powerhouses, transformer galleries, intermediate reservoir, lower reservoir, shafts and hoists, switchyard and surface buildings.