Preliminary design study of underground pumped hydro and compressed-air energy storage in hard rock. Volume 8. Design approaches: UPH, Appendix D. Power plant. Final report
This appendix documents studies undertaken to determine the power plant arrangements for a single-stage reversible pump-turbine two step (SSRPT-2) underground pumped hydro (UPH) installation and for a multi-stage reversible pump-turbine single step (MSRPT) UPH installation. The power plant arrangements consist of the underground powerhouses and transformer galleries together with the associated mechanical and electrical equipment, the administration and control building, the hoist head frames, the access, draft tube and bus tunnels, and the switchyard. Primary considerations including the number and size of pump-turbine and motor-generator units, starting methods, transformers, high-voltage connections, geotechnical and construction aspects and safety were studied within the context both of feasibility and of minimizing cost. The study led to the selection of suitable equipment and layouts for the powerhouses, transformer galleries and associated facilities. The material presented and also the cost estimates are based on the requirements for a 2000 MW plant providing 20,000 MWh of storage with a nominal head of 4600 ft. Studies subsequently carried out, including head optimization analyses for the overall UPH surface and underground configuration and further refinement of selected designs (see Volume 8, Design Approaches - UPH), have modified some of the material given in this appendix. The finally adopted arrangement is described in Volume 11, Plant Design - UPH.
- Research Organization:
- Potomac Electric Power Co., Washington, DC (USA); Acres American, Inc., Buffalo, NY
- DOE Contract Number:
- AC02-77ET28013
- OSTI ID:
- 6249956
- Report Number(s):
- EPRI-EM-1589-Vol.8-App.D; ON: DE82003075
- Country of Publication:
- United States
- Language:
- English
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Preliminary design study of underground pumped hydro and compressed-air energy storage in hard rock. Volume 8. Design approaches: UPH. Final report
Preliminary design study of underground pumped hydro and compressed-air energy storage in hard rock. Volume 11. Plant design: UPH. Final report
Related Subjects
13 HYDRO ENERGY
PUMPED STORAGE POWER PLANTS
CONSTRUCTION
COST
DESIGN
ELECTRIC GENERATORS
ELECTRIC MOTORS
PENSTOCKS
PERFORMANCE
PUMP TURBINES
SAFETY
UNDERGROUND
WATER RESERVOIRS
HYDRAULIC TURBINES
HYDROELECTRIC POWER PLANTS
LEVELS
MACHINERY
MOTORS
PEAKING POWER PLANTS
PIPES
POWER PLANTS
SURFACE WATERS
TURBINES
TURBOMACHINERY
250300* - Energy Storage- Pumped Hydro- (-1989)
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