대한전기학회논문지:전기기기및에너지변환시스템부문B (The Transactions of the Korean Institute of Electrical Engineers B)

대한전기학회 (The Korean Institute of Electrical Engineers)
권호 표지

다층 고온초전도 송전케이블의 길이에 따른 층별 전류분류 및 교류손실 계산

Current Sharing and AC Loss of a Multi-Layer HTS Power Transmission Cable with Variable Cable Length

  • 발행 : 2001.01.01
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초록

The superconducting transmission cable is one of interesting part in power application using high temperature superconducting wire. One important parameter in HTS cable design is transport current sharing because it is related with current transmission capacity and loss. In this paper, we calculate self inductances of each layer and mutual inductances between two layers from magnetic field energy, and current sharing of each layer for 4-layer cable using the electric circuit model which contain inductance and resistance (by joint and AC loss). Also, transport current losses which are calculated by monoblock model and Norris equation are compared. As a results, outer layer has always larger transport current than inner layer, and current capacity of each layer is largely influenced by resistance per unit cable length. As a conclusion, for high current uniformity and low AC loss, we have to decrease inductances themselves or those differences.

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참고문헌

  1. S. Kruger et al., 'Loss and Inductance Investigations in a 4-Layer Superconducting Prototype Cable Conductor,' IEEE Trans. on AS, Vol.9, No.2, pp.833-836, 1999 https://doi.org/10.1109/77.783426
  2. S.Mukoyama et al., 'Uniform Current Distribution conductor of HTS Power Cable with Variable Tape-Winding Pitches,' IEEE Trans. on AS, Vol.9, No.2, pp.1269-1272, 1999 https://doi.org/10.1109/77.783532
  3. H.Noji, 'AC Loss of a High-Tc Superconducting Power Cable Conductor,' Supercond. Sci. Technol., Vol.10, pp.552-556, 1997 https://doi.org/10.1088/0953-2048/10/8/004
  4. G. Vellego and P. Metra, 'An Analysis of the Transport Lossed Measured on HTSC Single-Phase Conductor Prototype,' Supercond. Sci. Technol., Vol.8, pp.476-483, 1995 https://doi.org/10.1088/0953-2048/8/6/014