导电层分流特征对高温超导电缆交流损耗影响  

THE INFLUENCE OF CONDUCTOR LAYER CURRENT SHARING CHARACTERISTIC ON AC LOSSES OF COLD DIELECTRIC HTS CABLE

作　　者：夏占军[1,2] 诸嘉慧[2] 郭立杰[1,2] 马学良[3] 张晓颖[3] 赵瑞[3] 

机构地区：[1]北京交通大学电气工程学院,北京100044 [2]中国电力科学研究院电工与新材料研究所,北京100192 [3]北京电力经济技术研究院,北京100055

出　　处：《低温物理学报》2012年第6期462-466,共5页Low Temperature Physical Letters

基　　金：国家电网公司科研项目(批准号:sgkjkj[2010]374)资助的课题~~

摘　　要：为了分析导电层分流特征对超导电缆交流损耗分布影响,建立了基于YBCO涂层导体的110kV/3kA冷绝缘高温超导电缆载流数学模型,计算了不同运行温度下超导电缆各导电层电流分布,并根据Monoblock模型及Bean模型计算了超导电缆交流损耗.计算结果表明77K下超导电缆层电流均匀分布时总交流损耗最小;69K时超导电缆总交流损耗最小时,电缆各导电层电流分布不均,超导电缆层电流均匀分布时总交流损耗最小这一观点并不具有普遍性.所提出的计算方法和结果为降低多导电层超导电缆交流损耗提供了新思路.To analyze the influence of conductor layer current sharing characteristic on AC losses of the High Temperature Superconducting （HTS） cable,the mathematical model of 110kV/3kA cold dielectric （CD） HTS cable based on YBCO coated conductor is set up and also the layer current distribution is calculated. The AC losses of the HTS cable are calculated by Monoblock model and Bean model. Results Show that the uniform layer current distribution can lead to the minimum total AC losses of the HTS cable at 77K. But at 69k the minimum total AC losses were not obtained at the condition of uniform layer current distribution. So the view of the uniform layer current distribution gives the minimum total AC losses of the HTS cable does not have catholicity, this result provide a new idea for reducing AC losses of multilayer HTS cable.

关 键 词：冷绝缘高温超导电缆 交流损耗 分流特征 YBCO 

分 类 号：TM249.7[一般工业技术—材料科学与工程]