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DC Critical Current Test Method for 22.9 kV/50 MVA Superconducting Power Cable Considering the Uncertainty

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10 Author(s)
Sukjin Choi ; Yonsei Univ., Seoul, South Korea ; Sangjin Lee ; Kideok Sim ; Jeonwook Cho
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In Korea, the superconducting power cable has been developed since 2001, with the basic specifications of 22.9 kV/50 MVA. The superconducting power cable can carry more than 2 to 5 times higher electric power compared with conventional ones. It is important to test the DC critical current related with its power capacity before applying to the real power grid. In 1995, several international standards organizations including IEC, decided to unify the use of statistical terms related with "accuracy" or "precision" in their standards. It was decided to use the word "uncertainty" for all quantitative (associated with a number) statistical expressions. In this paper, we measured DC critical current of 22.9 kV/50 MVA superconducting power cable with several voltage tap and analyzed the uncertainty with these results. These analyzed results can be applied the standardization of the superconducting power cable.

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Applied Superconductivity, IEEE Transactions on  (Volume:20 ,  Issue: 3 )