Abstract
The continuous development of electric power utilities has led to the increase in problems concerning fault currents. The use of fault current limiters, which suppress fault currents below a certain level, has been examined widely. The authors have studied a superconducting fault current limiter that is based on the magnetic shielding characteristics of superconductors. In this paper, three kinds of fault current limiters with high Tc superconductors and their results tested at liquid nitrogen temperature are presented. The experimental results show that the impedances of limiters in the fault condition became higher than those in the normal condition but were lower than the anticipated ones. Next, a numerical calculation model to analyze the experimental results is presented. The calculation results with this model agreed with the aforementioned experimental ones very well. From these studies it is concluded that it is necessary for the sudden transition from the superconducting state to the fully resistive state to be caused by suitable means.
| Original language | English |
|---|---|
| Pages (from-to) | 104-111 |
| Number of pages | 8 |
| Journal | Electrical Engineering in Japan |
| Volume | 115 |
| Issue number | 6 |
| DOIs | |
| Publication status | Published - Jan 1 1995 |
| Externally published | Yes |
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All Science Journal Classification (ASJC) codes
- Energy Engineering and Power Technology
- Electrical and Electronic Engineering
Cite this
Magnetic‐shield type superconducting fault current limiter with high Tc superconductors. / Kajikawa, Kazuhiro; Kaiho, Katsuyuki; Tamada, Noriharu; Onishi, Toshitada.
In: Electrical Engineering in Japan, Vol. 115, No. 6, 01.01.1995, p. 104-111.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Magnetic‐shield type superconducting fault current limiter with high Tc superconductors
AU - Kajikawa, Kazuhiro
AU - Kaiho, Katsuyuki
AU - Tamada, Noriharu
AU - Onishi, Toshitada
PY - 1995/1/1
Y1 - 1995/1/1
N2 - The continuous development of electric power utilities has led to the increase in problems concerning fault currents. The use of fault current limiters, which suppress fault currents below a certain level, has been examined widely. The authors have studied a superconducting fault current limiter that is based on the magnetic shielding characteristics of superconductors. In this paper, three kinds of fault current limiters with high Tc superconductors and their results tested at liquid nitrogen temperature are presented. The experimental results show that the impedances of limiters in the fault condition became higher than those in the normal condition but were lower than the anticipated ones. Next, a numerical calculation model to analyze the experimental results is presented. The calculation results with this model agreed with the aforementioned experimental ones very well. From these studies it is concluded that it is necessary for the sudden transition from the superconducting state to the fully resistive state to be caused by suitable means.
AB - The continuous development of electric power utilities has led to the increase in problems concerning fault currents. The use of fault current limiters, which suppress fault currents below a certain level, has been examined widely. The authors have studied a superconducting fault current limiter that is based on the magnetic shielding characteristics of superconductors. In this paper, three kinds of fault current limiters with high Tc superconductors and their results tested at liquid nitrogen temperature are presented. The experimental results show that the impedances of limiters in the fault condition became higher than those in the normal condition but were lower than the anticipated ones. Next, a numerical calculation model to analyze the experimental results is presented. The calculation results with this model agreed with the aforementioned experimental ones very well. From these studies it is concluded that it is necessary for the sudden transition from the superconducting state to the fully resistive state to be caused by suitable means.
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U2 - 10.1002/eej.4391150611
DO - 10.1002/eej.4391150611
M3 - Article
VL - 115
SP - 104
EP - 111
JO - Electrical Engineering in Japan (English translation of Denki Gakkai Ronbunshi)
JF - Electrical Engineering in Japan (English translation of Denki Gakkai Ronbunshi)
SN - 0424-7760
IS - 6
ER -