适用于公里级高温超导电缆的电力工井设计

Design and Research of Electric Well Suitable for Kilometer-Scale High Temperature Superconducting Cable

与常规电缆输电技术相比,超导电缆输电技术具有低损耗、大容量、节省走廊、环境友好、优化电网结构等特点,具有很大的应用潜力。介绍了超导电缆的特点,并对适用于公里级的超导电缆工井进行了设计方案研究。结果表明:对于超导电缆工井,建议采用单边支架布置,工井预留足够的电缆弧幅敷设宽度;固定时可采用滑动导轨进行支撑;对于接头工井,建设在常规电缆工井的基础上加设接头吊装孔;工井内支架建议采用镀锌钢板;建议在工井内配置智能井盖系统和在线监测装置。

Compared with conventional cable transmission technology,superconducting cable transmission technology has the characteristics of low loss,large capacity,corridor saving,environmental friendliness,optimization of power grid structure and so on,which has great potential for development.The characteristics of superconducting cable are introduced,and the design scheme of electric well suitable for kilometer-scale superconducting cable is studied.The results show that:for superconducting cable work-wells,it is recommended to use unilateral support layout,work-wells reserved enough cable arc width laying width;When fixed,sliding guide rail can be used for support;For the joint well,the joint hoisting holes are set up on the basis of the conventional cable well;It is recommended to use galvanized steel plate for working well support;It is recommended to configure intelligent manhole cover system and online monitoring device in the working well.