220kV/3kA高温超导模型电缆过电流特性分析

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摘要为了研制可以应用于实际电网的220kV/3kA等级三相交流高温超导电缆,基于研制的一根1.5m长,220kV/3kA等级交流高温超导模型电缆进行了短路故障电流特性分析。该电缆由铜骨架、导体层、屏蔽层和外绝缘组成。本文在高温超导模型电缆直流临界特性测试(临界电流达8kA以上)合理的基础上对电缆进行了短路电流冲击实验,冲击电流达到40.4kA,2s。同时基于傅里叶级数算法提取了高温超导模型电缆冲击时刻导体层的基波分量,对其进行了暂态特性分析,得出了模型电缆短路故障时刻的阻抗、相角随时间变化的关系,为高温超导电缆在电网中的投入运行奠定了基础。

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	周海静
	张慧媛
	刘宏伟
	王银顺
	李庆余
	薛驰
	赵连岐

关键词 ：高温超导模型电缆, 傅里叶级数算法, 过电流, 阻抗, 液氮

Abstract：In order to study the 220kV/3kA level three-phase AC High Temperature Supercon- ducting (HTS) power cable, which can be applied in power system, we have manufactured 1.5-m long 220kV/3kA HTS model power cable and studied characteristic analysis of fault current under the short circuit. The HTS model power cable consists of Cu former, conductor layers, shield layer and electrical insulation layer. Furthermore, we have carried it out fault current experiment based on the DC critical characteristic test of HTS model power cable (critical current about 8kA), up to 40.4kA, 2s. Furthermore, we have obtained the fundamental component of the conductor layers of HTS model power cable on the short circuit time, and studied the transient characteristics of HTS model power cable, which concluded the impedance、 phase angle that lay a foundation for putting HTS power cable into operation in the grid.

Key words： keywords：HTS model power cable Fourier series algorithm overcurrent impedance liquid nitrogen

收稿日期: 2012-09-20 出版日期: 2013-12-12

PACS:

TM249.7

基金资助:国家自然科学基金资助项目(51077051)。

作者简介: 周海静男，1982年生，硕士研究生，研究方向为超导技术在电力系统中的应用。张慧媛女，1963年生，副教授，研究方向为电力系统兼容，超导技术在电力系统中的应用。

引用本文:

周海静, 张慧媛, 刘宏伟, 王银顺, 李庆余, 薛驰, 赵连岐. 220kV/3kA高温超导模型电缆过电流特性分析[J]. 电工技术学报, 2013, 28(1增): 91-95. Zhou Haijing, Zhang Huiyuan, Liu Hongwei, Wang Yinshun, Li Qingyu, Xue Chi, Zhao Lianqi. Over-Current Characteristics Analysis of 220kV/3kA HTS Model Power Cable. Transactions of China Electrotechnical Society, 2013, 28(1增): 91-95.

链接本文:

http://dgjsxb.ces-transaction.com/CN/Y2013/V28/I1增/91

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