Results 181 to 190 of about 2,365 (223)

Simulations of the Recovery Process of an Air-Coil SFCL

IEEE Transactions on Applied Superconductivity, 2016
In this paper, a study of the recovery process of an air-coil superconducting fault current limiter (AC-SFCL) is done. Tests of an AC-SFCL prototype operating at normal conditions subjected to fault currents have been performed. After the interruption of the fault current, the system recovers its normal conditions in such a way that the recovery ...
Sousa, Wescley Tiago Batista de, Dicler, Felipe Novaes Francis, Martins, Flavio Goulart dos Reis   +2 more
openaire   +2 more sources

Electromagnetic design of saturated iron core SFCL

2011 International Conference on Applied Superconductivity and Electromagnetic Devices, 2011
The most attractive advantage of a saturated iron core SFCLs (SIC-SFCL) is that its impedance can change from very low in normal power transmission to very high for fault current limiting. This characteristic is achieved by varying the electromagnetic states in the main body of the device, including the iron cores, the ac working coils, and the dc bias
Jing Yin Zhang, null Zi Qiang Wei, null Hui Hong, Wei Zhi Gong, Ying Xin   +4 more
openaire   +1 more source

2D and 3D Numerical Models of Inductive SFCL

IEEE Transactions on Applied Superconductivity, 2007
The Superconducting Fault Current Limiter (SFCL) can be used to limit the short-circuit current level in electrical networks. The inductive SFCL works like a transformer with shorted secondary HTS winding. Because of the iron core, the inductive SFCL is not axially symmetrical and should be modeled in 3D geometry.
S. Kozak, T. Janowski, G. Wojtasiewicz
openaire   +1 more source

Design and Characterization of the Integrated Matrix-Type SFCL

IEEE Transactions on Applied Superconductivity, 2009
In this paper, we report the improved and integrated matrix-type superconducting fault current limiter (MFCL). The new MFCL proposed in this work has a structure that easily improves the quench characteristics of superconducting elements. This integrated MFCL is simply constructed by mounting a trigger element and superconducting elements in a single ...
null Dong-Chul Chung, null Byung Hwa Yoo, null Yong-sun Cho, null Byung-Ik Jung, null Hyo-Sang Choi, null Tae-Hyun Sung, null Young-Hee Han, null Jong Ha Lee, null Min Hwan Kwak, null Sung Hun Lim, null Byoung-Sung Han   +10 more
openaire   +1 more source

Characterization of reactors for integrated matrix-type SFCL

Physica C: Superconductivity and its Applications, 2011
Abstract We reported the fabrication and analysis of the reactor for matrix-type superconducting fault current limiters (SFCLs). Reactors take a role of inducting magnetic field to superconductors in reactors and bypassing partial fault currents to themselves. Superconductors used in this work were YBCO thin films deposited on 5.08 cm diameter Al 2 O
D.C. Chung, B.H. Pak, D.U. Cheong, H.S. Choi, Y.S. Cho, B.I. Jung   +5 more
openaire   +1 more source

Effect of a SFCL on Commutation Failure in a HVDC System

IEEE Transactions on Applied Superconductivity, 2013
This paper describes an analysis of the effects of a superconducting fault current limiter (SFCL) on commutation failure in a high-voltage direct current (HVDC) system. Most commutation failures are caused by voltage disturbances at the inverter side and cannot be avoided in HVDC systems using thyristors.
null Hee-Jin Lee, null Gum Tae Son, null Jae-Ik Yoo, null Jung-Wook Park   +3 more
openaire   +1 more source

Theoretical Parameter Design Method of SFCL for Concurrent Commutation Failure Inhibition in SFCL-Segmented Multi-Infeed LCC-HVDC Systems

IEEE Transactions on Power Systems, 2020
Earlier works have reported the emerging fault current limiter (FCL) segmentation technique to mitigate concurrent commutation failure (CF) under ac faults in multi-infeed LCC-HVDC systems. However, the FCL's parameter is determined by the electromagnetic transient (EMT) simulation based method, which will lead to enormous workload and long computation
Yinhong Li, Hao Xiao, Xianzhong Duan
openaire   +1 more source

Application Effects of SFCL in Korean Power System

IFAC Proceedings Volumes, 2003
Abstract As power systems grow more complex and power demands increase, the fault current tends to gradually increase. In the near future, the fault current will exceed a circuit breaker rating for some substations, which is an especially important issue in the Seoul.
Jong-Yul Kim, Heung-Kwan Choi, Jae-Young Yoon, Hak-Man Kim   +3 more
openaire   +1 more source

Analysis on the Fusion Technology of a Commercial Transformer and an SFCL

Journal of Superconductivity and Novel Magnetism, 2012
In this study, a new concept is proposed on a combination device with functions of a commercial transformer and a superconducting fault current limiter (SFCL). This device serves as a transformer by stepping the voltage up or down in normal condition.
Yong-Sun Cho, Byung-Ik Jung, Hyo-Sang Choi   +2 more
openaire   +1 more source

Temperature Dependent Equivalent Circuit of a Magnetic-Shield Type SFCL

IEEE Transactions on Appiled Superconductivity, 2005
In order to investigate the reciprocal interaction between a SFCL and the Power System an equivalent circuit of the device needs to be introduced in a power system simulator. In this paper the equivalent circuit of a magnetic shield type SFCL, consisting of two coupled electric and thermal networks, is obtained starting from the integral formulation of
FABBRI, MASSIMO, MORANDI, ANTONIO, NEGRINI, FRANCESCO, RIBANI, PIER LUIGI   +3 more
openaire   +1 more source