This paper deals with fabrication and development of a high temperature superconducting (HTS) fault current limiter (FCL) based on YBCO coated conductor (CC) wire for distribution systems. The capacity of the developed HTS FCL is 8.3 MVA and its rated voltage is 13.2 kV which corresponds to a three-phase power equipment voltage class of 22.9 kV. Tests of the developed prototype HTS FCL were conducted at Korea Electrotechnology Research Institute (KERI) accredited as a testing laboratory by the Korea Laboratory Accreditation Scheme (KOLAS). A short-circuit test and an AC dielectric withstand voltage test for the HTS FCL were conducted under sub-cooled liquid nitrogen (LN2) conditions of 3 bar and 65 K. The magnitude of an asymmetric shortcircuit current without FCL reached 30 kApeak in a short-circuit test. The superconducting coil quenched instantaneously after the fault, and the magnitude of the fault current was limited to 3.6 kApeak within quarter cycle by the developed resistance of the superconducting coil. An AC dielectric withstand voltage test was performed, and the HTS FCL successfully withstood 143 kV for 1 minute. Also, it was found that there was no electrical or mechanical damage on the superconducting coil after the tests.
Bibliographical noteFunding Information:
Manuscript received August 27, 2007. This work was supported in part by a grant from the Center for Applied Superconductivity Technology of the 21st Century Frontier R&D Program funded by the Ministry of Science and Technology, Republic of Korea. H. Kang, C. Lee, K. Nam, and B.-Y. Seok are with the Electro-Mechanical Research Institute of Hyundai Heavy Industries Co. Ltd., Gyeonggi-do 464800, Korea (e-mail: email@example.com). Y. S. Yoon is with the Electrical Engineering, Ansan College of Technology, Gyeonggi-do 464800, Korea. H.-M. Chang is with the Department of Mechanical and System Design Engineering, Hong Ik University, Seoul 121–791, Korea. T. K. Ko is with the Department of Electrical and Electronic Engineering, Yonsei University, Seoul 120–749, Korea. Color versions of one or more of the figures in this paper are available online at http://ieeexplore.ieee.org. Digital Object Identifier 10.1109/TASC.2008.920678
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Electrical and Electronic Engineering