한국초전도ㆍ저온공학회논문지 (Progress in Superconductivity and Cryogenics)

  • 제20권4호
  • /
  • Pages.60-64
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  • 2018
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  • 1229-3008(pISSN)
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  • 2287-6251(eISSN)
한국초전도저온학회 (The Korean Society of Superconductivity and Cryogenics)
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Economic analysis of a 22.9 kV HTS power cable and conventional AC power cable for an offshore wind farm connections

  • 투고 : 2018.11.30
  • 심사 : 2018.12.24
  • 발행 : 2018.12.31
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초록

As the offshore wind farms increase, interest in the efficient power system configuration of submarine cables is increasing. Currently, transmission system of the offshore wind farm uses almost AC system. High temperature superconducting (HTS) power cable of the high capacity has long been considered as an enabling technology for power transmission. The HTS cable is a feasible way to increase the transmission capacity of electric power and to provide a substantial reduction in transmission losses and a resultant effect of low CO2 emission. The HTS cable reduces its size and laying sectional area in comparison with a conventional XLPE or OF cable. This is an advantage to reduce its construction cost. In this paper, we discuss the economic feasibility of the 22.9 kV HTS power cable and the conventional AC power cables for an offshore wind farm connections. The 22.9 kV HTS power cable cost for the offshore wind farm connections was calculated based on the capital expenditure and operating expense. The economic feasibility of the HTS power cable and the AC power cables were compared for the offshore wind farm connections. In the case of the offshore wind farm with a capacity of 100 MW and a distance of 3 km to the coast, cost of the 22.9 kV HTS power cable for the offshore wind farm connections was higher than 22.9 kV AC power cable and lower than 70 kV AC power transmission cable.

키워드

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Fig. 1. Configuration of the offshore wind farm.

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Fig. 2. Case 1 of the offshore wind farm.

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Fig. 3. Case 2 of the offshore wind farm.

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Fig. 4. Case 3 of the offshore wind farm.

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Fig. 5. Calculation results of the three cases.

TABLE I 22.9 KV HTS POWER CABLE OF LS CABLE & SYSTEM.

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TABLE II THE HTS POWER CABLE INSTALLATION COST.

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TABLE III 22.9 KV AC POWER CABLE COST.

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TABLE IV 70 KV AC POWER CABLE COST.

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TABLE V PARAMETERS OF THE OFFSHORE WIND FARM.

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TABLE VI CALCULATION RESULTS OF THE CASE 1.

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TABLE VII CALCULATION RESULTS OF THE CASE 2.

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TABLE VIII CALCULATION RESULTS OF THE CASE 3.

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참고문헌

  1. Paola Bresesti, Wil L. Kling, Ralph L. Hendriks, Riccardo Vailati, "HVDC Connection of Offshore Wind Farms to the Transmission System," IEEE Transactions on Energy Conversion, vol. 22, Issue. 1, Mar. 2007.
  2. S.H.Sohn "The Results of Installation and Preliminary Test of 22.9 kV, 50 MVA, 100 m Class HTS Power Cable System at KEPCO," IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, vol. 17, No. 2, Jun. 2007.
  3. J. F. Maguire, " Progress and Status of a 2G HTS Power Cable to Be Installed in the Long Island Power Authority (LIPA) Grid," IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, vol. 21, No. 3, Jun. 2011.
  4. Jong-Nam Won, "A Study on Siting on HVAC Offshore Substation for Wind Power Plant using Submarine Cable Cost Model," KIEE, vol. 62, No. 4, pp. 451-456, 2013.
  5. D. Hur, "Economic Considerations Underlying the Adoption of HVDC and HVAC for the Connection of an Offshore Wind Farm in Korea," JEET, Vol. 7, No. 2, pp. 1537-1543, Dec. 1999.
  6. Jian Zhang, "Economic comparison of VSC-HVDC and HVAC Systems for Connections of Offshore Wind Farms," Mechanics and Materials, Vol. 672-674, pp. 325-330, 2014. https://doi.org/10.4028/www.scientific.net/AMM.672-674.325