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随着第二代高温超导带材的性能不断提高和商业化供应,基于YBCO材料的超导电力技术应用研究也在逐步向多领域深入进行。超导带材的大电流冲击性能对于超导电缆的短路电流冲击耐受能力、电阻型限流器的限流性能等有着直接的影响。以不锈钢加强型超导带材样品为研究对象进行了实验研究,并对常压液氮浸没环境中,不同冲击时长、不同冲击电压条件大电流冲击过程中温升、冷却时长等特性开展了实验研究,总结了温升与冲击时长、冷却时间的关系和规律。实验是以超导限流器用超导带材为研究对象进行的。超导带材在故障电流下的发热量及其散热结构设计将成为超导电缆、超导限流器等超导电力装置设计成功与否的关键。
With the continuous improvement of the performance of second-generation high-temperature superconducting tapes and the commercialization of their applications, research and application of superconducting power technology based on YBCO materials are also gradually being conducted in many fields. The high current impact performance of superconducting tapes has a direct impact on the short-circuit current impact resistance of superconducting cables and the current-limiting performance of resistive current limiters. Experiments were carried out on stainless steel reinforced superconducting tape samples. The effects of temperature rise and cooling time on the impact of high current impact in different conditions of impingement pressure were investigated experimentally Study, summed up the relationship between temperature rise and impact duration, cooling time and the law. The experiment is based on the superconducting current limiter with superconducting tape as the research object. Superconducting tape in the fault current heating and cooling structure design will become the superconducting cables, superconducting current limiter and other superconducting power device design the success or failure of the key.