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Abstract
DC system protection is more challenging than that for AC system due to the rapid rate of rise of the fault current and absence of natural current zero-crossing in DC systems. Superconducting fault current limiter (SFCL) in DC systems is a promising technology to reduce the fault current level and the rate of rise of the fault current, and also SFCLs have no resistance during normal operation. In this paper, the behaviors of an SFCL coil are investigated under both low impedance and high impedance fault conditions in DC systems. In the low impedance fault condition system, the SFCL coil performs effective limitation of the fault current level under different prospective fault current levels. The application of SFCLs with limited inductance in the DC system can be a potential solution to effectively suppress the fault current under low impedance short-circuit faults. The SFCL coil under the high impedance fault condition can only limit the prospective fault current when it is much higher than the critical current of the coil.
Original language | English |
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Article number | 9376895 |
Pages (from-to) | 1-1 |
Number of pages | 1 |
Journal | IEEE Transactions on Applied Superconductivity |
Volume | 31 |
Issue number | 5 |
Early online date | 12 Mar 2021 |
DOIs | |
Publication status | Published - 31 Aug 2021 |
Bibliographical note
Funding Information:Manuscript received November 29, 2020; revised February 28, 2021; accepted March 9, 2021. Date of publication March 12, 2021; date of current version April 16, 2021. This work was supported in part by the U.K. EPSRC: Developing superconducting fault current limiters (SFCLs) for distributed electric propulsion aircraft: EP/S000720/1, and in part by the U.K. Royal Society International Exchanges 2018 Cost Share (China): Advanced DC fault protection by integration of superconducting fault current limiter (SFCL) with DC circuit breaker: IEC\NSFC\181111. (Corresponding author: Xiaoze Pei.) Jiawen Xi, Xiaoze Pei, and Wenjuan Song are with the Department of Electronic and Electrical Engineering, University of Bath, Bath BA2 7AY, U.K. (e-mail: [email protected]; [email protected]; [email protected]).
Publisher Copyright:
IEEE
Keywords
- Capacitors
- Circuit faults
- Fault current limiters
- Fault currents
- Impedance
- Inductance
- Resistance
- Yttrium barium copper oxide
- power system protection
- short-circuit currents
- yttrium barium copper oxide (YBCO)
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Electrical and Electronic Engineering
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Dive into the research topics of 'Experimental Tests of DC SFCL under Low Impedance and High Impedance Fault Conditions'. Together they form a unique fingerprint.Projects
- 1 Finished
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Developing Superconducting Fault Current Limiters (SFCLs) for Distributed Electric Propulsion Aircraft
Pei, X. (PI)
Engineering and Physical Sciences Research Council
1/01/19 → 28/02/21
Project: Research council