Superconducting magnetic energy storage: Technical considerations and relative capital cost using high-temperature superconductors
- Bechtel National, Inc., San Francisco, CA (United States)
Superconducting magnetic energy storage plants could significantly benefit form using high-temperature superconductors. Benefits would include greatly lowered operation and maintenance expenses and modestly reduced capital costs. The project team compared present HTSC capabilities to the minimum requirements for SMES superconductors. Next, they projected potential cost reductions, assuming one-for-one replacement of conventional low-temperature superconductors with HTSC at equal installed cost. The estimated captial-cost savings from substituting HTSC for conventional superconductors in large-scale SMES plants ranged from 7% for 5000 MWh to 10% for 20 MWh. In addition, HTSC used in SMES plants would provide six design benefits -- better stability, lower refrigeration needs, lower thermal shielding needs, easier cooldown, no helium use, and possibly no vacuum system. Partially offsetting these is the need for more support structure, caused by the lower strength of materials at 77 K versus 4 K, and loss of the cryopumping ability of 4 K surfaces. To realize these benefits, the HTSC primary SMES coil conductor must be robust enough to be formed into a coal, and it must superconduct in a magnetic field of at least 3 tesla at a current density of at least 12,000 A/cm{sup 2}.
- Research Organization:
- Electric Power Research Inst., Palo Alto, CA (United States); Bechtel National, Inc., San Francisco, CA (United States)
- Sponsoring Organization:
- EPRI; Electric Power Research Inst., Palo Alto, CA (United States)
- OSTI ID:
- 5659757
- Report Number(s):
- EPRI-TR-100557; TRN: 92-016521
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
36 MATERIALS SCIENCE
HIGH-TC SUPERCONDUCTORS
MATERIAL SUBSTITUTION
SUPERCONDUCTING MAGNETIC ENERGY STORAGE
COST BENEFIT ANALYSIS
BARIUM OXIDES
BISMUTH OXIDES
CALCIUM OXIDES
CAPITALIZED COST
COPPER OXIDES
CURRENT DENSITY
DESIGN
MAGNET COILS
MAGNETIC FIELDS
MATERIALS
MECHANICAL PROPERTIES
SPECIFICATIONS
STRONTIUM OXIDES
THALLIUM OXIDES
YTTRIUM OXIDES
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BISMUTH COMPOUNDS
CALCIUM COMPOUNDS
CHALCOGENIDES
COPPER COMPOUNDS
COST
ECONOMIC ANALYSIS
ECONOMICS
ELECTRIC COILS
ELECTRICAL EQUIPMENT
ENERGY STORAGE
EQUIPMENT
MAGNETIC ENERGY STORAGE
OXIDES
OXYGEN COMPOUNDS
STORAGE
STRONTIUM COMPOUNDS
SUPERCONDUCTORS
THALLIUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
250100* - Energy Storage- Magnetic
665412 - Superconducting Devices- (1992-)
360606 - Other Materials- Physical Properties- (1992-)