[논문]기계적 접점을 이용한 FCL의 동작 특성

정병익; 최효상

doi:10.5370/kiee.2016.65.5.878

[국내논문] 기계적 접점을 이용한 FCL의 동작 특성
Operational Characteristics of the FCL Using the Mechanical Contact in the Power System 원문보기

전기학회논문지 = The Transactions of the Korean Institute of Electrical Engineers, v.65 no.5, 2016년, pp.878 - 882

정병익 (Dept. of Electricity and Electronics Engineering, Dongkang College) , 최효상 (Dept. of Electrical Engineering, Chosun University)

Abstract ▼ AI-Helper

These days, SFCLs are being developed in order to limit fault current. However, the superconducting elements that limit the fault current have such problems as capacity increase and require auxiliary devices including cooling device. If devices that comprise the current power network can withstand fault current for at least one cycle, it is possible to limit the fault current with current limiting elements by bypassing it on the fault line. In this study, the fault current limiter was configured with current transformer, vacuum interrupter, and current limiting element. Through the experience, it was confirmed that the fault current was limited within one cycle. The superconducting element, as a current limiting element, limited the fault current by 80 % within one cycle from fault occurrence, and the passive element limited it more than 95 %. Also, through the comparison between resistance curve and power consumption curve, it was confirmed that the current limiting element using a passive element was more stable than the superconducting element that required capacity increase and other auxiliary devices. It was considered that the FCL proposed in this study could limit fault current stably within one cycle from fault occurrence by using the existing power technologies such as fault current detection and solenoid valve operating circuit.

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가설 설정

2. SCR C/S determines fault status, and operates SCR.
3. SCR operates, to supply 220V power to S/V.
5. The fault current is limited by the current limiting element.

제안 방법

In addition, the experiments using the superconducting element and the passive element (R) as fault current limiting elements were performed, of which results were compared and analyzed.
The superconducting fault current limiters that had been studied previously had problems like increase in the capacity of superconducting element and simultaneously quenching, and also required auxiliary devices including a cooling device. In this study, a vacuum interrupter was used for bypassing the fault current and to operate the interrupter, a circuit was designed using a solenoid valve.Also, the superconducting element and the passive element (R) as current limiting elements were used for the experiments, for comparison and analysis.
In this study, a vacuum interrupter was used for bypassing the fault current and to operate the interrupter, a circuit was designed using a solenoid valve.Also, the superconducting element and the passive element (R) as current limiting elements were used for the experiments, for comparison and analysis. CT was used for detecting the fault, and it was confirmed that it took less than one cycle for the vacuum interrupter to operate to bypass the fault current and limit the fault current.

참고문헌 (9)

O. B. Hyun, J. W. Sim, H. R. Kim, K. B. Park, S. W. Yim, and I. S. Oh, "Reliability enhancement of the fast switch in a hybrid superconducting fault current limiter by using power electronic switches," IEEE Trans. Appl. Supercond., vol. 19, no. 3, pp. 1843-1846, June 2009.

상세보기
O. B. Hyun, K. B. Park, J. W. Sim, H. R. Kim, S. W. Yim, and I. S. Oh, "Introduction of a hybrid SFCL in KEPCO grid and local points at issue," IEEE Trans. Appl. Supercond., vol. 19, no. 3, pp. 1946-1949, June 2009.

상세보기
H. Lee, K. B. Park, J. Sim, Y. G. Kim, I. S. Oh, O. B. Hyun, and B. W. Lee, "Hybrid superconducting fault current limiter of the first half cycle non-limiting type," IEEE Trans. Appl. Supercond., vol. 19, no. 3, pp. 1888-1891, June 2009.

상세보기
S. H. Lim, J. C. Kim, and B. W. Lee, "Improvement of recovery characteristics of a flux-lock type SFCL using a superconductor's trigger," IEEE Trans. Appl. Supercond., vol. 20, no. 3, pp. 1182-1185, June 2010.

상세보기
Y. S. Cho, H. S. Choi, S. P. Go, "Operational Characteristics of Transformer-Type SFCL with or without Neutral Line between the Secondary windings and Superconducting units", Journal of Electrical Engineering & Technology, Vol. 60, No. 6, pp. 1268-1273, 2011.
J. M. Ahn, J. S. Kim, J. F. Moon, S. H. Lim, J. C. Kim, C. H. Kim, O. B. Hyun, "Analysis on the Protective Coordination in Power Distribution System whit Superconducting Fault Current Limiter", Journal of Electrical Engineering & Technology, vol. 57, no. 5, pp. 755-760, May 2008.
B. I. Jung, H. S. Choi, Y. S. Cho, and D. C. Chung, "Current limitation and power burden of a flux-coupling type SFCL in the three-phase power system according to turn's ratio and fault type," IEEE Trans. Appl. Supercond., vol. 21, no. 3, pp. 1225-1228, Jun. 2011.

상세보기
Y. S. Cho, H. S. Choi, "The current limiting effects of a matrix-type SFCL according to the variations of designed parameters in the trigger and current-limiting parts," Physica C, vol. 468, pp. 2054-2058, 2008.

상세보기
B. I. Jung, H. S. Choi, "Combined Effect of the SFCL and Solenoid Coils," IEEE Trans. Appl. Supercond., vol. 24, no. 3, pp. 5600404, June 2014.

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[국내논문] 기계적 접점을 이용한 FCL의 동작 특성
Operational Characteristics of the FCL Using the Mechanical Contact in the Power System 원문보기

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[국내논문] 기계적 접점을 이용한 FCL의 동작 특성 Operational Characteristics of the FCL Using the Mechanical Contact in the Power System 원문보기

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[국내논문] 기계적 접점을 이용한 FCL의 동작 특성
Operational Characteristics of the FCL Using the Mechanical Contact in the Power System 원문보기

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