DOI QR코드

DOI QR Code

배전계통에 전력용 변압기 병렬운전시 22.9 kV SFCL Bus Tie 적용방안에 관한 연구

A Study on the Application of SFCL on 22.9 kV Bus Tie for Parallel Operation of Power Main Transformers in a Power Distribution System

  • 투고 : 2010.09.13
  • 심사 : 2010.12.14
  • 발행 : 2011.01.01

초록

This paper analyzed the application of Superconducting Fault Current Limiter (SFCL) on 22.9 [kV] bus tie in a power distribution system. Commonly, the parallel operations of power main transformers offer a lot of merits. However, when a fault occurs in the parallel operation of power main transformer, the fault currents might exceed the interruption capacity of existing protective devices. To resolve this problem, thus, the SFCL has been studied as the fascinating device. In case that, Particularly, the SFCL could be installed to parallel operation of various power main transformers in power distribution system of the Korea Electric Power Corporation (KEPCO) on 22.9 [kV] bus tie, the effect of the resistance of SFCL could reduce the increased fault currents and meet the interruption capacity of existing protective devices by them. Therefore, we analyzed the effect of application and proposed the proper impedance of the R-type SFCL on 22.9 [kV] bus tie in a power distribution system using PSCAD/EMTDC.

키워드

참고문헌

  1. Yong-Cheol Kang, Mi-Sun Lee, etc, "Estimation of the Circulating Currents in the Parallel Operation of Transformers", KIEE Trans. Power Systems, Vol. 57, no. 12, pp. 2148-2152. Dec. 2008.
  2. Haibo Liu, Jiming Lu, and Dan Wang, "Parallel Operation of Electronic Power Transformer and Conventional Transformer", IEEE Nanjing IAS/PES, pp. 1802-1808, 2008.
  3. G. Calzolari, C. Saldana, "Power transformers in parallel which share a neutral resistance : how to manage the circulating current between the secondary windings", IPST 2005 Conference, Montreal, Canada, June 2005.
  4. Sung-Hun Lim, "Fault Current Waveform Analysis of a Flux-Lock Type SFCL According to LC Resonance Condition of Third Winding," J. Electr. Eng. Technol., vol. 3, no. 2, pp. 213-217, June 2008. https://doi.org/10.5370/JEET.2008.3.2.213
  5. L. Ye, L. Lin, and K. P. Juengst, "Application studies of superconducting fault current limiters in electric power system," IEEE Transactions on Applied Superconductivity, vol. 18, no. 2, pp. 624-627, June 2008. https://doi.org/10.1109/TASC.2008.920785
  6. M. H. Kim, S. H. Lim, J. F. Moon, and J. C. Kim, "Method of Recloser-Fuse Coordination in a Power Distribution System with Superconducting Fault Current Limiter," IEEE Transactions on Applied Superconductivity, vol. 20, no. 3, pp. 1164-1167, June 2008.
  7. KEPCO. "Long-term prospects for transmission system (2002-2015)," Dec. 2002.
  8. C. Industries, Electrical distribution system protection-3rd edition:Cooper power system press, 1990.
  9. Lin. Ye, L. Lin, and Archie Campbell, "Behavior investigations of superconducting fault current limiters in power system," IEEE Transactions on Applied Superconductivity, vol. 18, no. 2, pp. 624-627, June 2008. https://doi.org/10.1109/TASC.2008.920785
  10. J. Duncan Glover, and Mulukutla S. Sarma, Power system snalysis and design, BROOKS/COLE, 2002.
  11. T. Gonen, Electric power distribution system engineering-second edition, CRC press, 2008.

피인용 문헌

  1. Operational Method of Superconducting Fault Current Limiter with Reduction Function of Asymmetric Fault Current vol.28, pp.10, 2014, https://doi.org/10.5207/JIEIE.2014.28.10.056