Journal of the Korean Institute of Illuminating and Electrical Installation Engineers (조명전기설비학회논문지)

The Korean Institute of IIIuminating and Electrical Installation Engineers (한국조명전기설비학회)
권호 표지
DOI QR코드

DOI QR Code

Analysis Operating Characteristics of Matrix-Type Superconducting Fault Current Limiter in Ground Faults of Power Grid

전력계통의 지락사고에 대한 매트릭스형 초전도 한류기의 동작특성

  • Published : 2009.10.31
Download PDF
⟨ Previous Next ⟩

Abstract

It is very important for power stability to suppress the excessive fault current happened frequently in the real power grid The superconducting fault current limiter (SFCL) is one of the most effective ways to reduce the fault current among the facilities developed so far. In this paper, we have investigated the operating characteristics of the power grid with the SFCL according to three types such as the single, double and triple line-to-ground faults. In addition, we analyzed the consumption power of the superconducting units based on the working data of the SFCL. We confirmed that the fault current could be limited lower than its peak value to 85 percentage in initial fault condition and to 85 percentage after one cycle in the matrix-type SFCL. The consumption powers of the superconducting units were almost equal by reduction of the difference of the critical current between superconducting units element.

전력 계통 내에서 발생하는 과도한 고장전류의 억제를 위한 가장 이상적인 방안은 초전도 한류기이다. 초전도 한류기의 전력계통 적용을 위해 본 논문에서는 전력계통 내에서 발생하는 1선, 2선, 3선 지락사고를 모의하여 매트릭스형 초전도 한류기의 동작 특성 및 소비전력을 분석하였다. 모든 지락사고에 대해 매트릭스형 초전도 한류기는 사고 초기에는 85[%] 이상, 1주기 이후에는 95[%] 이상 고장전류를 제한시킬 수 있다는 것을 확인하였다. 또한 초전도 소자간의 임계특성의 차이를 줄여줌으로써 소비전력이 균등해진다는 것을 확인하였다.

Keywords

References

  1. H. S. Choi, N. Y. Lee, Y. H. Han, T. H. Sung, B. S. Han, "The Characteristic Analysis Between Flux-Coupling and Flux-Lock Type SFCL According to Variations of Turn Ratios", IEEE Trans. Appl. Superconduc., Vol. 18, No. 2, 2008 https://doi.org/10.1109/TASC.2008.920637
  2. L. F. Li, L. H. Gong, X. D. Xu, J. Z. Lu, Z. Fang, H. X. Zhang, "Field Test and Dermonstrated Operation of 10.5 kV/1.5 kA HTS Fault Current Limiter", IEEE Trans. Appl. Superconduc., Vol. 17, No. 2, 2007
  3. T. Janowski, S. Kozak, B. Kondratowicz- Kucewicz, G. Wojtasiewicz, and J. Kozak, "Analysis of Transfomer Type Superconducting Fault Current Limiters", IEEE Trans. Appl. Superconduc., Vol. 17, No. 2, 2007
  4. K. G. Oh, Y. Sun. Cho, H. H. Choi, '1X3 행렬구조를 갖는 매트릭스형 초전도 한류기의 자장유무에 따른 퀜치 특성 분석', 대한전기학회논문지, Vol. 57P, No. 3, 2008
  5. H S. Choi, Y. S. Cho, "Critical Current Equalization via Neutral Lines in a Transformer-Type SFCL", IEEE Trans. Appl. Superconduc., Vol. 18, No. 2, 2008
  6. D.C. Chung, H.S. Choi, N.Y. Lee, G.Y. Nam, Y.S. Cho, T.H. Sung, Y.H. Han, B.S. Kim, S.H. Lim, "Optimum design of matrix fault current limiters using the series resistance connected with Shunt coil", Physica C, Vol. 643, pp. 1193-1197, 2007
  7. Y.S. Cho, H.S. "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 https://doi.org/10.1016/j.physc.2008.05.125