摘要
电网发生短路瞬间,短路电流可能迅速上升至上百千安,利用超导带材的零电阻特性,设计的超导限流器可以迅速切断故障电流,以保护其他元器件。由于超导带材在通流后不可避免地受到电磁力作用,故有必要对其进行电磁力仿真分析,研究其磁场、电磁力的分布特点。超导带材盘的径向力最外侧线圈受力最强,且为扩张力,最内侧线圈受力最小,方向与超导带材盘数量相关;中间盘的轴向力受力最小,两侧盘线圈轴向力大小一致、方向相反,且两侧盘最外侧线圈的轴向力最大。能够为超导带材盘的结构设计、疲劳分析等提供参考。
At the moment of a short circuit in the power grid,the short-circuit current may rapidly rise to hundreds of kiloamps.Using the zero resistance characteristic of superconducting tape,the designed superconducting current limiter can quickly cut off the fault current to protect other components.Because the superconducting tape is inevitably subjected to electromagnetic force after current is applied,the electromagnetic force is simulated and analyzed to study the distribution characteristics of its magnetic field and electromagnetic force.The radial force of the superconducting tape disc has the strongest force on the outermost coil and is the expansion force,the innermost coil is the smallest,the direction is related to the number of tape discs.The axial force of the middle disc is the least,and the axial force of the coils on both sides is the least.The size is the same,the direction is opposite,and the axial force of the outermost coil of the two disks is the largest.It can provide reference for the structural design and fatigue analysis of the tape plate.
作者
岳丹阳
庄劲武
武瑾
李思光
陆利强
YUE Danyang;ZHUANG Jinwu;WU Jin;LI Siguang;LU Liqiang(School of Electrical Engineering,Naval University of Engineering,Wuhan 430033,China)
出处
《电器与能效管理技术》
2022年第1期67-72,共6页
Electrical & Energy Management Technology
关键词
超导限流器
超导带材
磁场
电磁力
superconducting current limiter
superconducting tape
magnetic field
electromagnetic force
