Study of kV Class Current Limiting Unit With YBCO Thin Films

Hori, T.; Endo, Mikihiko; Koyama, T.; Yamaguchi, Iwao; Kaiho, K.; Furuse, Mitsuho; Yanabu, S.

doi:10.1109/tasc.2007.898449

Cited by 8 publications

(4 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The use of a high-speed switch with a simple structure prevents the superconducting element from being used as the limiting impedance by allowing a parallel coil to become the limiting impedance instead and using the superconducting element simply as the trigger source. The dissipated energy in the superconductor in this shunt type SFCL is therefore significantly reduced [2,3]. It introduces the advantage of SFCL as follows.…”

Section: Investigation Of Sfclmentioning

confidence: 99%

See 1 more Smart Citation

Adaptation of superconducting fault current limiter to high-speed reclosing

Koyama

Yanabu

2009

Physica C: Superconductivity

Self Cite

View full text Add to dashboard Cite

Section: Investigation Of Sfclmentioning

confidence: 99%

“…We have investigated the superconducting current fault current limiter that connected the electromagnetic repulsion switch [2,3]. This paper then proposes a model for the reclosing mechanism of the electromagnetic repulsion switch.…”

Section: Introductionmentioning

confidence: 99%

Adaptation of superconducting fault current limiter to high-speed reclosing

Koyama

Yanabu

2009

Physica C: Superconductivity

Self Cite

View full text Add to dashboard Cite

“…Furthermore, in order to increase the power ratings of the SFCL, a lot of superconducting elements should be connected in series and in parallel, which resulted in extreme high cost. In order to solve these problems, the hybrid SFCL was proposed [1][2][3][4][5][6][7][8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Comparative Analysis on Current Limiting Characteristics of Hybrid Superconducting Fault Current Limiters (SFCLs) with First Half Cycle Limiting and Non-Limiting Operations

Kim¹,

Lim²,

Kim³

2012

Journal of Electrical Engineering and Technology

View full text Add to dashboard Cite

-The application of large power transformer into a power distribution system was inevitable due to the increase of power demand and distributed generation. However, the decrease of the power transformer's impedance caused the short-circuit current of the power distribution system to be increase thus, the higher short-circuit current exceeded the cut-off ratings of the protective devices such as circuit breaker. To solve these problems, several countermeasures have been proposed to protect the power system effectively from higher fault current and the superconducting fault current limiter (SFCL) has been expected to be the promising countermeasure. In spite of excellent current limiting performances of the SFCL, on the other hand, the efforts to apply the SFCL into power system has been delayed due to both the limited spaces for the SFCL's installation and its long recovery time after the fault removal. In order to solve these problems, a hybrid SFCL, which can perform either first half cycle limiting of first half cycle non-limiting operation, has been developed by corporation of LSIS (LS Industrial System) and KEPCO (Korea Electric Power Corporation). In this paper, we tried to requirements hybrid SFCL by PSCAD/EMTDC. Simulation results of our analysis of the hybrid SFCL is that its accompanied the characteristics both the limit the fault current and quick recovery caused by the less impact from superconductor.

show abstract

“…Tokyo Denki University, Japan 2 National Institute of Advanced Industrial Science and Technology, Japan…”

mentioning

confidence: 99%

Study of Superconductor Recovery Time Characteristics and High‐Speed Reclosing of Electromagnetic Repulsion Switch

Koyama

Kaiho

Yamaguchi

et al. 2011

Electrical Engineering Japan

View full text Add to dashboard Cite

SUMMARYUsing a high-temperature superconductor, we constructed and tested a model superconducting fault current limiter (SFCL). The superconductor and a vacuum interrupter serving as the commutation switch were connected in parallel using a bypass coil. When the fault current flows in this equipment, the superconductor is quenched and the current is then transferred to the parallel coil due to the voltage drop in the superconductor. This large current in the parallel coil actuates the magnetic repulsion mechanism of the vacuum interrupter and the current in the superconductor is interrupted. Using this equipment, the current flow time in the superconductor can easily be minimized. On the other hand, the fault current is also easily limited by the large reactance of the parallel coil. This system has many advantages. Thus, we introduced an electromagnetic repulsion switch. High-speed reclosing after interrupting the fault current in the electrical power system is essential. Thus, the SFCL should recover to the superconducting state before high-speed reclosing. But the superconductor generates heat at the time of quenching, and it takes time to recover to the superconducting state. Therefore, the recovery time is an issue. In this paper, we study the superconductor recovery time. We also propose an electromagnetic repulsion switch with a reclosing system.

show abstract

Study of kV Class Current Limiting Unit With YBCO Thin Films

Cited by 8 publications

References 3 publications

Adaptation of superconducting fault current limiter to high-speed reclosing

Adaptation of superconducting fault current limiter to high-speed reclosing

Comparative Analysis on Current Limiting Characteristics of Hybrid Superconducting Fault Current Limiters (SFCLs) with First Half Cycle Limiting and Non-Limiting Operations

Study of Superconductor Recovery Time Characteristics and High‐Speed Reclosing of Electromagnetic Repulsion Switch

Contact Info

Product

Resources

About