面向高温超导电缆的暂稳态热特性数值研究  

Numerical study on transient and steady-state thermal characteristics of HTS cables

作　　者：宗明 陈妍君 段若晨 陆超 储琳琳 王经纬 朱夏 盛杰[2] Zong Ming;Chen Yanjun;Duan Ruochen;Lu Chao;Chu Linlin;Wang Jingwei;Zhu Xia;Sheng Jie(Shinan Power Supply Company,State Grid Shanghai Municipal Electric Power Company,Shanghai 200233,China;Shanghai Jiao Tong University,Shanghai 200240,China)

机构地区：[1]国网上海市电力公司市南供电公司,上海200233 [2]上海交通大学,上海200240

出　　处：《低温与超导》2022年第10期20-25,共6页Cryogenics and Superconductivity

基　　金：国家电网上海市电力公司科技项目(5209332000JS)资助。

摘　　要：重点研究高温超导电缆在挂网运行时的稳态热特性以及暂态响应情况。针对稳态运行情况,建立了高温超导电缆交流损耗计算模型和超导电缆液氮迫流管道的一维传热模型,研究高温超导电缆在不同工况下的交流损耗分布情况,并将交流损耗值作为热载荷输入至传热模型中,分析液氮在稳态运行状态下的温升变化。针对暂态运行情况,建立了超导电缆等效电路模型,对故障工况下的超导电缆的暂态温升进行计算,相关结论及数据可用于合理调整继电保护动作时间,有效保障系统的安全性与稳定性。The steady-state characteristics as well as the transient responses of high temperature superconducting(HTS) cable were focused during the on-grid operation. When operating in a steady state, a simulation model of calculating AC loss of HTS cable was established to study the AC loss distribution under different operating conditions, and then the AC loss would be put into 1 D heat transfer model as the thermal loads to analyze the temperature rise of liquid nitrogen in a steady-state operation. While in a transient operation, an equivalent circuit model of HTS cable was established to calculate the transient temperature rise of HTS cable under fault condition, which could be used to reasonably adjust the relay protection action time after faults and effectively guarantee the safety and stability of the system.

关 键 词：高温超导电缆 挂网运行 传输损耗 一维传热 暂稳态特性 

分 类 号：TM26[一般工业技术—材料科学与工程]