Analysis of a flux-coupling type superconductor fault current limiter with pancake coils |
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| Affiliation: | 1. Institute of Plasma Physics Chinese Academy of Sciences, Hefei 230031, China;2. China Electric Power Research Institute, Beijing 100192, China;3. Tsinghua University, Beijing 100084, China;4. Electric Power Research Institute of State Grid Liaoning Electric Power Co., Ltd., Shenyang 110006, China;1. Institute of Plasma Physics Chinese Academy of Science, Hefei, China;2. University of Science and Technology of China, Hefei, China |
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| Abstract: | The characteristics of a flux-coupling type superconductor fault current limiter (SFCL) with pancake coils are investigated in this paper. The conventional double-wound non-inductive pancake coil used in AC power systems has an inevitable defect in Voltage Sourced Converter Based High Voltage DC (VSC-HVDC) power systems. Due to its special structure, flashover would occur easily during the fault in high voltage environment. Considering the shortcomings of conventional resistive SFCLs with non-inductive coils, a novel flux-coupling type SFCL with pancake coils is carried out. The module connections of pancake coils are performed. The electromagnetic field and force analysis of the module are contrasted under different parameters. To ensure proper operation of the module, the impedance of the module under representative operating conditions is calculated. Finally, the feasibility of the flux-coupling type SFCL in VSC-HVDC power systems is discussed. |
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| Keywords: | Superconducting fault current limiter YBCO Electromagnetic coupling condition Force analysis Impedance calculation |
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