基于ANSYS的干式空心电抗器股间短路磁场分析  

Analysis of Strand-to-Strand Short Circuit Magnetic Field of Dry Hollow Reactor Unit Based on ANSYS

作　　者：古亮[1,2] 刘肖光 贺娟 郝鸿凯[1] GU Liang;LIU Xiao-guang;HE Juan;HAO Hong-kai(Chongqing University of Technology,Chongqing 400054,China;Chongqing Engineering Research Center of Energy Internet,Chongqing 400054,China)

机构地区：[1]重庆理工大学,重庆400054 [2]重庆市能源互联网工程技术研究中心,重庆400054

出　　处：《计算机仿真》2019年第9期103-108,共6页Computer Simulation

基　　金：重庆市教育委员会科学技术研究项(KJ1709225)

摘　　要：大型干式空心电抗器在无功补偿和限制短路电流以及抑制高次谐波等方面起着不可或缺的作用。但由于电抗器长期工作在高电压环境,因此经常出现局部放电、匝间绝缘缺陷而导致的匝间短路等故障,而目前对于电抗器股间故障的研究与保护几乎处于空白。针对此问题,通过ANSYS软件建立了66kV干式空心电抗器的二维有限元模型,分析了发生股间短路时各个绕组磁场强度的变化。结果得到了短路前后实部与虚部磁场的分布规律,以及不同短路位置磁通密度与磁力线的变化规律。为电抗器故障的有效监测提供了参考意见,也为电力系统安全稳定运行以及电抗器的制造提供了新的思路和理论基础。The large dry hollow reactor plays an indispensable role in reactive power compensation and restricting the short circuit current and the suppression of high harmonics.Because a reactor has to work for a long time in high voltage environment,it often causes partial discharge,turn-to-turn insulation,etc.At present,there is almost no research and protection of the strand-to-strand short circuit.In response to this problem,a two-dimensional finite element model of 66kV dry hollow reactor was established through ANSYS software,the variation of magnetic field intensity of each winding was analyzed when there was an strand-to-strand short circuit.Finally,the distributions of real and virtual magnetic fields before and after short circuit,and the distribution of magnetic flux density and magnetic lines of force in different short-circuit positions were obtained.It is of great significance to the safe and stable operation of power system and the manufacture of reactor.

关 键 词：干式空心电抗器 股间短路 有限元 磁通密度 磁力线 

分 类 号：TM47[电气工程—电器]