Preliminary design study of underground pumped hydro and compressed-air energy storage in hard rock. Volume 2. Project design criteria: UPH. Final report

Technical Report · Fri May 01 04:00:00 EDT 1981

OSTI ID:6377747

This volume documents the design criteria for an underground pumped hydroelectric (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. The requirements for the power plant electrical and mechanical equipment, including pump-turbine and motor-generator units, are referred to. Electrical design criteria are given to meet the requirements of two power-houses located underground at different depths, but these criteria may not necessarily reflect PEPCO's current engineering practice. It should be noted that the design of criteria given in this volume relate to the two step UPH storage facility arrangement selected during the Design Approaches phase of the study as described in Volume 8, Design Approaches - UPH. The criteria refer to a specific site and take into account the site investigation work described in Volume 6, Site Investigation - Shallow Drilling and in Volume 7, Site Investigation - Deep Drilling. The design criteria given were used as the basis for the plant design set out in Volume 11, Plant Design -UPH.

• Research Organization: Potomac Electric Power Co., Washington, DC (USA); Acres American, Inc., Columbia, MD
• DOE Contract Number: AC02-77ET28013
• OSTI ID: 6377747
• Report Number(s): EPRI-EM-1589-Vol.2; ON: DE81028107
• Country of Publication: United States
• Language: English

Related Subjects

13 HYDRO ENERGY
130300* -- Hydro Energy-- Plant Design & Operation
25 ENERGY STORAGE
250300 -- Energy Storage-- Pumped Hydro-- (-1989)
CONTROL EQUIPMENT
DESIGN
ELECTRIC GENERATORS
EQUIPMENT
HYDRAULIC TURBINES
HYDROELECTRIC POWER PLANTS
LEVELS
MACHINERY
PEAKING POWER PLANTS
PENSTOCKS
PIPES
POWER PLANTS
PUMP TURBINES
PUMPED STORAGE POWER PLANTS
SPECIFICATIONS
SURFACE WATERS
TURBINES
TURBOGENERATORS
TURBOMACHINERY
UNDERGROUND
WATER RESERVOIRS