Progress in Superconductivity and Cryogenics (한국초전도ㆍ저온공학회논문지)

The Korean Society of Superconductivity and Cryogenics (한국초전도저온학회)
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Cryogenic cooling system for a 154 kV/ 2 kA superconducting fault current limiter

  • Published : 2018.06.30
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Abstract

A cryogenic cooling system is designed for a 154 kV/ 2 kA three-phase hybrid type superconducting fault current limiter (SFCL). The superconducting modules of the SFCL have the operating condition of 71 K at 500 kPa. The total heat load of the SFCL including the cooling system is estimated at 9.6 kW. The cooling system of the closed loop is configured to meet the operating condition, depending on cooling methods of forced flow cooling and re-liquefaction cooling. The cooling system is composed of three cryostats with superconducting modules, cryocoolers, liquid nitrogen circulation pumps, a subcooler and a pressure builder. The basic cooling concept is to circulate liquid nitrogen between three SFCL cryostats and the cryocooler, while maintaining the operating pressure. The design criterion for the cooling system is based on the operation results of the cooling system for a 154 kV/2 kA single-phase hybrid SFCL. The specifications of system components including the piping system are determined according to the design criterion.

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References

  1. O. B. Hyun, et al., "Domestic effects for SFCL Application and hybrid SFCL," Prog. Supercond., vol. 10, pp. 60-67, 2008.
  2. S. Eckroad, "Superconducting power equipment," Technology Watch 2012 (EPRI), 1024190, 2012.
  3. S. Eckroad, "Superconducting fault current limiters," Technology Watch 2009 (EPRI), 1017793, 2009.
  4. H. Hong, et al., "Design, fabrication, and operation of the cryogenic system for a 220 kV/300 MVA saturated iron-core superconducting fault current limiter," IEEE Trans. Appl. Supercon., vol. 24, no. 5, 9002204, 2014.
  5. W. Romanosky, "Development and testing of a transmission voltage $SuperLimiter^{TM}$ fault current limiter," Final Scientific/Technical Report (DOE), 2012.
  6. F. Schmidt, and A. Hobl, "Latest achievements in resistive type superconducting fault current limiters," 11th EPRI Supercon. Conf., Hilton university of Houston, Houston, TX, USA, 2013.
  7. H. Yeom, et al., "Test of the Modified Cooling System for the 154 kV SFCL," ASC 2016, Denver, CO, USA, 2016.
  8. S. In, et al., "Experimental Study on Vaporization of Subcooled Liquid Nitrogen by Instantaneous Heat Generation in LN2 Chamber for HTS-FCL," IEEE Trans. Appl. Supercon., vol. 25, no. 3, 3800204, 2015.
  9. I. E. Idelchik, Handbook of Hydraulic Resistance, 3rd ed., Begell House, NY, USA, 1996, pp. 359-360.
  10. Installation, Operating, and Maintenance Manual # BNCP-64C -M001, Barber-Nichols, 2010.
  11. Cryopump Technical Specification, Cryozone [Online]. Available: https://www.cryozone-dhi.com/en/products/cryogenic-pumps/ln2-pump