大城市输电系统采用高温超导电缆的可行性  

Feasibility of adopting high-temperature superconductive cable in metropolis power transmission system

作　　者：应启良[1] 黄崇祺[1] 魏东[1] 

机构地区：[1]上海电缆研究所,上海200093

出　　处：《上海电力》2003年第4期279-284,共6页Shanghai Electric Power

摘　　要：大城市应用高温超导电缆主要用于地下电缆工程改造,利用现有排管取代现有的常导电缆,增加地下电缆传输容量以及将1 GVA以上电能输入城市负荷中心。采用常导电力电缆传输1GVA以上的电能进入中心城区,输电电压一般要求为500kV,并需研制、开发500kV大长度电缆和相应附件。采用高温超导电缆有可能降低输电电压等级,以满足特大型城市负荷中心供电需求。通过对交流高温超导电缆系列计算,提出了城市输电系统采用220kV及以下电压等级的高温超导电缆,利用现有地下电缆工程设施增加传输容量以及代替常导电缆将1GVA以上电力传输进入中心城区的可行性。The application of the high-temperature superconductive cable to the metropolis mainly focuses upon the reconstruction of the underground cabling. The existing parallel pipes can be used to replace the existing conventional conductive cables, increasing the transmission capacity of the underground cable and transmitting a huge amount of electricity (above 1 GVA) into the load center of the city. With conventional power cable 500kV transmission voltage would be required to transmit the electricity energy of more than 1 GVA into the central part of the metropolis. Besides, extralong 500kV cable and related auxiliaries should be developed and manufactured for the first time for this purpose. The adoption of high temperature superconductive cable can reduce the level of transmission voltage. It is possible to transmit the electricity more than 1 GVA into the load center of the city with 220kV high-temperature superconductive cable. Moreover 110kV high temperature superconductive cable can also be used to transmit the electricity of approximately 1 GVA. According to the design and calculation of the AC high-temperature superconductive cable series the feasibility of adopting the 200kV or less than 220kV class high-temperature superconductive cables in the urban power transmission system to enter the central part of the downtown area and to replace the 500kV voltage class were suggested.

关 键 词：输电系统 电力电缆 高温超导电缆 可行性 传输容量 传输效率 

分 类 号：TM7[电气工程—电力系统及自动化] TM249.3[一般工业技术—材料科学与工程]