3kA冷绝缘高温超导电缆的设计和短路冲击试验  

Short-circuit pulse experiments and investigation of 3kA cold-dielectric high-temperature superconducting cable

作　　者：刘宏伟[1] 刘天玉[1] 张慧媛[1] 李庆余[2] 王银顺[1] 

机构地区：[1]华北电力大学电气与电子工程学院新能源国家重点实验室,北京102206 [2]中国电力科学研究院高电压研究所,北京100192

出　　处：《低温与超导》2013年第6期30-33,共4页Cryogenics and Superconductivity

基　　金：中央高校科研基本业务费支持(10MG02)

摘　　要：为验证接入系统的高温超导电缆的暂态特性,研制了220kV/3kA 1.5米冷绝缘高温超导模型电缆,并成功进行了短路电流为40.4kArms、持续时间为2s的短路冲击试验。文中详细阐述了起到支撑、液氮流通通道和保护作用的铜骨架的设计,超导电缆本体均流设计,并对该模型电缆进行了接入系统的短路冲击试验,试验表明,该超导电缆可满足220kV电网暂态冲击要求,验证了超导电缆本体和铜骨架设计的正确和合理性。A 1.5m 220kV/3kA cold -dielectric high -temperature superconducting model cable was designed and fabricated in order to investigate the transient characteristic when it was put into power grid. Furthermore, fault - current experiment was successfully performed with a current of 40.4kArms and duration of 2s. The design of copper - former and homogenous current design of superconducting cable was particularly described. Short - circuit with a current of 40.4kArms and duration of 2s was applied to the model cable. The experiment indicates the cable could stand for the 220kV short - circuit demands and validate the correctness and rationality of the cable design.

关 键 词：高温超导电缆 冷绝缘 短路试验 

分 类 号：TM249.7[一般工业技术—材料科学与工程]