Pulsed Energy Storage System Design

Technical Report · Mon Jul 01 04:00:00 EDT 1974

DOI:https://doi.org/10.2172/1021481· OSTI ID:1021481

Biallis, G; Cassel, R L; Fowler, W; Livdahl, P V; Mills, F E; Palmer, M L; Reardon, P J; Snowden, S C; Strauss, B P; Teng, L C; Winje, R A

A superconductive energy storage magnet which is connected to the three phase power system could be designed, constructed, and placed in operation at Fermilab which would essentially eliminate the large repetitive power pulses now required from the power system. In addition to the power pulses, voltage flicker is also caused due to the reactive power pulsation. Specifically, a one megawatt hour superconductive energy storage magnet and a 2.00 megawatt thyristorized converter can achieve nullification of these power pulses up to 400 GEV synchrotron operation. Above 400 GEV, operation should be possible up to 500 GEV with appreciable less power pulsing requirements from the system than are now considered permissible. Carried to successful completion, this project would serve to advance applied superconductivity to a highly significant degree. The effect would be of world wide importance to both high energy physics and to the electric power industry. The preliminary magnet design is a 1 MWh dipole composed of cryogenically stable composite conductors connected in parallel with aluminum shield windings. The shield windings carry impressed pulsed currents while eliminating pulsed currents from the dc superconductive windings. Without pulsed currents or pulsed magnetic fields there are no ac losses in standard helium. The major radius of the dipole is 8.85 m; the minor radius is 0.69m; there are 188 turns at 80,000 A and each turn is 4 conductors wound in parallel. The 20,000 A TiNb-copper composite conductor is l0x 1.12 cm in cross section similar to but larger than the FNAL bubble chamber conductor. The shield is 188 turns (equal number of turns is a shielding condition) of hollow aluminum conductor cooled via circulated cold helium gas at 40K. The turns are spaced around the minor circumference according to a cosine distribution which produces zero internal field. In use the shield loss converted to room temperature power is about .8MW when 0.1 MWh is used from a 1 MWh storage dipole. The 0.1 MWh is sufficient to provide complete load leveling for 400 GEV pulses, and operation at 500 GEV with lower power transients than are presently experienced.

• Research Organization: Fermi National Accelerator Laboratory (FNAL), Batavia, IL
• Sponsoring Organization: DOE Office of Science
• DOE Contract Number: AC02-07CH11359
• OSTI ID: 1021481
• Report Number(s): FERMILAB-TM-2514-AD
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
AC LOSSES
ALUMINIUM
Accelerators
BUBBLE CHAMBERS
CROSS SECTIONS
DESIGN
DIPOLES
ELECTRIC POTENTIAL
ENERGY STORAGE SYSTEMS
FERMILAB
HELIUM
MAGNETIC FIELDS
MAGNETS
POWER SYSTEMS
PULSES
SHIELDING
SHIELDS
SUPERCONDUCTING MAGNETIC ENERGY STORAGE
SUPERCONDUCTIVITY