Research on resistance characteristics of YBCO tape under short-time DC large current impact |
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| Affiliation: | 1. Instituto de Física, Universidade Federal do Rio Grande do Sul, Caixa Postal 15051, 91501-970 Porto Alegre, RS, Brazil;2. Instituto de Física e Matemática, Universidade Federal de Pelotas, Caixa Postal 354, 96010-900 Pelotas, RS, Brazil;3. Instituto de Matemática, Estatística e Física, Universidade Federal do Rio Grande, 96203-900 Rio Grande, RS, Brazil;1. Institute of Plasma Physics, Chinese Academy of Sciences, China;2. Shanghai Aerospace Equipments Manufacturer, China;1. National Fusion Research Institute, Daejeon, Korea;2. DNDE, Busan, Korea;3. Chungnam National University, Daejeon, Korea;1. Division of Physics, Department of Sciences & Humanities, Vignan’s Foundation for Science, Technology & Research (VFSTR) (Deemed to be University), Vadlamudi, Guntur 522213, Andhra Pradesh, India;2. School of Physics, University of Hyderabad, Gachibowli, Hyderabad 500046, Telangana, India;1. School of Electrical Engineering, Wuhan University, Wuhan 430072, PR China;2. Electric Power Research Institute, State Grid Chongqing Electric Power Company, Chongqing 401123, PR China;3. School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, PR China |
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| Abstract: | Research of the resistance characteristics of YBCO tape under short-time DC large current impact is the foundation of the developing DC superconducting fault current limiter (SFCL) for voltage source converter-based high voltage direct current system (VSC-HVDC), which is one of the valid approaches to solve the problems of renewable energy integration. SFCL can limit DC short-circuit and enhance the interrupting capabilities of DC circuit breakers. In this paper, under short-time DC large current impacts, the resistance features of naked tape of YBCO tape are studied to find the resistance – temperature change rule and the maximum impact current. The influence of insulation for the resistance – temperature characteristics of YBCO tape is studied by comparison tests with naked tape and insulating tape in 77 K. The influence of operating temperature on the tape is also studied under subcooled liquid nitrogen condition. For the current impact security of YBCO tape, the critical current degradation and top temperature are analyzed and worked as judgment standards. The testing results is helpful for in developing SFCL in VSC-HVDC. |
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| Keywords: | Superconducting fault current limiter Resistance – temperature characteristics YBCO tape DC current impact VSC-HVDC |
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