基于全损耗计算的空心电力电抗器温度场研究  

Research on temperature field of air core power reactor based on all losses calculation

作　　者：阎秀恪[1] 代忠滨 于存湛[3] 谢德馨[1] 

机构地区：[1]沈阳工业大学电气工程学院,辽宁沈阳110870 [2]河南平高电气股份有限公司,河南平顶山467001 [3]辽宁省电力有限公司检修分公司,辽宁沈阳110003

出　　处：《电工电能新技术》2015年第4期31-36,55,共7页Advanced Technology of Electrical Engineering and Energy

基　　金：辽宁省教育厅科技基金(L2013046)资助项目

摘　　要：针对引发空心电力电抗器故障的局部过热问题,在二维和三维磁场有限元分析的基础上,计算空心电抗器的全部损耗——绕组内损耗和接线臂构架内的涡流损耗。其中绕组内损耗包括绕组电阻性损耗和绕组内的涡流损耗。以计算得到的全部损耗作为热源,结合空心电抗器的散热条件,建立空心电抗器内部温度场及周围流体场耦合有限元模型,对空心电抗器进行了二维和三维流场-温度场耦合计算,得到了电抗器各包封的温度分布,研究结果表明接线臂构架和撑条影响了电抗器的温升以及最热点位置,考虑全部损耗和散热条件的三维流-热耦合分析是十分必要的。To research the local overheated problem of air core power reactor, the 2D and 3D magnetic fields of air core reactor have been analyzed using FEM in this paper. Based on the magnetic field distribution, all losses in air core reactor have been computed. The losses comprises the losses in windings and eddy current losses in connection arm truss, in which the losses in windings include resistance losses and eddy current losses in windings. Taking all losses as thermal sources, combining with dispersion conditions, the fluid-thermal field coupling model of air core reactor has been established. The temperature distribution of each package can be obtained by 2D and 3D fluidthermal field coupling calculation. The comparison between results shows that the connection arm truss and sustaining bars have influence on temperature and on the hottest position of air core reactor. It is necessary for reactor design to research 3D fluid-thermal coupled field considering all losses and all cooling conditions.

关 键 词：空心电抗器 损耗 热源 流体-温度耦合场 

分 类 号：TM472[电气工程—电器]