공극이 도입된 철심에 코일의 자기결합을 이용한 초전도한류기의 고장전류 제한 및 히스테리시스 특성

다국어 초록 (Multilingual Abstract)

In this paper, the fault current limiting and the hysteresys characteristics of a superconducting fault current limiter (SFCL) using magnetic coupling of two coils on the iron core with an air-gap were analyzed. The introduction of the air-gap in the SFCL with magnetically coupled two coils can suppress the saturation of the iron-core and, on the other hand, make the limiting impedance of the SFCL decreased, which results from the increase of the exciting current. To analyze the effect of the aig-gap on the fault current limiting characteristics of the SFCL, the hysteresys curves of the iron core comprising the SFCL were derived from the short-circuit experiment and the variation in the voltage-current trace of the SFCL during the fault period was analyzed. Through the comparison with the current limiting characteristics of the SFCL without air-gap, the air-gap could be confirmed to contribute to the suppression of the iron core's saturation through the increase of the SFCL's burden from the short-circuit current.

목차 (Table of Contents)

• Abstract
• 1. 서론
• 2. 본론
• 3. 결론
• 감사의 글
• References
• 저자소개

참고문헌 (Reference)

1 S. H. Lim, "The improved hysteresis characteristics of flux-lock type SFCL using third winding" 406 : 37-45, 2004

2 S. H. Lim, "The fault current limiting characteristics of a flux-lock type high-TC superconducting fault current limiter using a series resonance" 44 : 249-254, 2004

3 O. B. Hyun, "Reliability Enhancement of the Fast Switch in a Hybrid Superconducting Fault Current Limiter by Using Power Electronic Switches" 19 (19): 1843-1846, 2009

4 Ok-Bae Hyun, "Introduction of a Hybrid SFCL in KEPCO Grid and Local Points at Issues" 19 (19): 1946-1949, 2009

5 "Improvement on Current Limiting Characteristics of a Flux-Lock Type SFCL Using E-I Core" 19 (19): 1904-1907, 200906

6 Sung-Hun Lim, "Impedance Variation of a Flux-Lock Type SFCL Dependent on Winding Direction Between Coil 1 and Coil 2" 15 (15): 2039-2042, 2005

7 S. H. Lim, "Fault Current Limiting Characteristics due to Winding Direction between Coil 1 and Coil 2 in a flux-lock type SFCL" 416 : 34-42, 2004

8 T. Hara, "Development of a new 6.6kV/1500A class superconducting fault current limiter for electric power system" 8 (8): 182-192, 1993