Development and performance results of 5 MVA SMES for bridging instantaneous voltage dips

Author

Nagaya, S. ; Hirano, N. ; Kondo, M. ; Tanaka, T. ; Nakabayashi, H. ; Shikimachi, K. ; Hanai, S. ; Inagaki, J. ; Ioka, S. ; Kawashima, S.

Author_Institution

Chubu Electr. Power Co., Inc., Nagoya, Japan

Volume

14

Issue

2

fYear

2004

fDate

6/1/2004 12:00:00 AM

Firstpage

699

Lastpage

704

Abstract

The superconducting magnetic energy storage system (SMES) of output 5 MVA has been developed to bridge instantaneous voltage dips. The field examination is executed by setting up this system at the new and large liquid crystal factory in Japan. The developed SMES system can store up to 7.34 MJ of magnetic energy in superconducting coils using the NbTi Rutherford conductor. The maximum output of the developed SMES is 5 MVA, and the system can discharge the output for one s. The operating current of the coil is 2.7 kA, and the rated voltage is 2.5 kV. The field examination was started in July 2003. During the field test, we will confirm the performance of bridging instantaneous voltage dips by SMES, the long-term drive reliability and the standby loss characteristic.

Keywords

power supply quality; power system stability; superconducting coils; superconducting magnet energy storage; superconducting magnets; thermal stability; 2.5 kV; 2.7 kA; 5 MVA; Japan; NbTi Rutherford conductor; SMES; compact cryocooler; instantaneous voltage dip bridging; liquid crystal factory; operating current; output discharge; standby loss characteristic; superconducting coils; superconducting magnetic energy storage system; Bridge circuits; Conductors; Liquid crystals; Niobium compounds; Production facilities; Samarium; Superconducting coils; Superconducting magnetic energy storage; Titanium compounds; Voltage fluctuations; Compact cryo-cooler; SMES; field test; instantaneous voltage dips; superconducting magnetic energy storage system;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/TASC.2004.830076

Filename

1324889