30-MJ superconducting magnetic energy storage (SMES) unit for stabilizing an electric transmission system

Conference · Sun Jan 01 00:00:00 EST 1978

DOI:https://doi.org/10.1109/TMAG.1979.1060044· OSTI ID:6385157

Rogers, J D; Boenig, H J; Bronson, J C; Colyer, D B; Hassenzahl, W V; Turner, R D; Schermer, R I

Electric power systems that have major loads and generation centers separated by large distances may experience low-frequency power oscillations. This type of oscillation has occurred on the Pacific ac intertie that connects southern California and the Pacific Northwest. A separate, almost parallel, dc-transmission line also connects these areas. The Bonneville Power Administration, which operates this transmission system, has overcome the instability by controlling the power transmitted on the dc-transmission line. A 30-MJ (8.4-kWh) superconducting magnetic energy storage unit with a 10-MW converter could also provide damping for this instability. The conceptual design of the 30-MJ coil and the cryogenic and electrical components of the system are described. The system is to operate at a maximum current of 5 kA and will modulate the ac Intertie at 0.35 Hz. Discharge will be controlled to retain a minimum stored energy of 20 MJ to limit cyclic strains in the coil and ac losses in the conductor. The conductor will be made of multistrand-copper and copper-matrix, multifilament NbTi superconducting wires on a stainless steel mandrel.

• Research Organization: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
• DOE Contract Number: W-7405-ENG-36
• OSTI ID: 6385157
• Report Number(s): LA-UR-78-2435; CONF-780952-26
• Resource Relation: Journal Volume: 15; Journal Issue: 1; Conference: Applied superconductivity conference, Pittsburgh, PA, USA, 25 Sep 1978
• Country of Publication: United States
• Language: English

Related Subjects

25 ENERGY STORAGE
24 POWER TRANSMISSION AND DISTRIBUTION
MAGNETIC ENERGY STORAGE EQUIPMENT
DESIGN
POWER SYSTEMS
STABILITY
SUPERCONDUCTING MAGNETS
ELECTRICAL EQUIPMENT
ELECTROMAGNETS
EQUIPMENT
MAGNETS
SUPERCONDUCTING DEVICES
250100* - Energy Storage- Magnetic
200300 - Electric Power Engineering- Power Transmission & Distribution- (-1989)