摘要
成功研制的75m长10.5kV/1.5kA三相交流高温超导电缆是目前世界上少数几组并入实际电网试验运行的三相交流高温超导电缆之一。超导电缆芯采用均流方法设计,在自主开发的专用绕线机上绕制;低温杜瓦管采用柔性波纹管和真空绝热结构;电缆的绝缘设计和加工实现了与常规电缆电绝缘工艺的兼容;低温制冷系统采用减压降温方式;在线监测系统采用光-电转换技术实现高电压隔离。该超导电缆的交流载流能力大于3500A,自2004年12月起,已累计在配电网中运行达7000h。
75m long 10.5kV/1.5kA three-phase high temperature superconducting （HTS） power cable has been developed successfully and put into operation in live power grid. Conductor of the power cable utilizes optimum design method and is wound by a stranding machine. Cryogenic envelope consists of two concentric corrugated stainless steel tubes with thermal insulation and high vacuum. Design and processing of cable insulation is compatible with that of conventional cable. Cryocooling system uses sub-cooled nitrogen pressurized to cool the power cable and its termination. Online monitoring system adopts fiber technique to insulate high voltage. The power cable can carry more than 3500A AC current, and has been operating for almost 7000h without any breakdown since December, 2004.
出处
《中国电机工程学报》
EI
CSCD
北大核心
2007年第12期91-96,共6页
Proceedings of the CSEE
基金
国家863高技术基金项目(2005AA306320)~~
关键词
高温超导电缆
高温超导带材
低温杜瓦管
终端
绝缘
低温制冷
high temperature super conducting power cable
high temperature super conducting tape
cryogenic envelope
termination
insulation
cryocooling
