极细超导电力圆形股线机械特性研究  

Study on the mechanical properties of ultra-fine superconducting power circular strands

作　　者：王泽黎 宋绪鹏 付昱玮 刘一鸣 刘伟 赵东[3] 孟紫晴 Wang Zeli;Song Xupeng;Fu Yuwei;Liu Yiming;Liu Wei;Zhao Dong;Meng Ziqing(State Grid Beijing Chaoyang Power Supply Co.Ltd.,Beijing 100020,China;State Grid Langfang Power Supply Co.Ltd.,Langfang 065000,China;School of Electrical and Electronic Engineering,North China Electric Power University,Beijing 102206,China)

机构地区：[1]国网北京朝阳供电公司,北京100124 [2]国网廊坊供电公司,廊坊065000 [3]华北电力大学电气与电子工程学院,北京102206

出　　处：《低温与超导》2025年第1期30-34,40,共6页Cryogenics and Superconductivity

基　　金：国家自然科学基金(51977078)资助。

摘　　要：为研究不同结构的极细超导电力圆形股线的机械特性及其影响因素以提高其机械稳定性,在77 K下对不同层数的股线进行拉应力实验,分析不同层数股线的临界电流对拉应力的响应、应力应变响应,以及多次循环施加载荷和移除载荷时,股线的冷作硬化现象。结果表明,随股线层数增多,股线的不可逆95%应力减小;股线在多次加载和卸载后,呈现出显著的应力加强。To investigate the mechanical properties of ultra fine superconducting round strands with different structures and their influencing factors to improve their mechanical stability,tensile stress experiments were conducted on strands with varying layers at 77 K.The responses of critical current to tensile stress,stress-strain behavior and the cold work hardening phenomenon were analyzed during multiple cycles of loading and unloading.The results indicate that as the number of strand layers increases,the irreversible 95%stress decreases.Additionally,the strands exhibit significant stress strengthening after multiple cycles of loading and unloading.

关 键 词：极细 超导电力 圆形股线 机械特性 

分 类 号：TM12[电气工程—电工理论与新技术]