300 Mvar空冷调相机稳态负序能力分析  

Analysis of Steady-state Negative Sequence Capability of 300 Mvar Air-cooled Condenser

作　　者：肖翦 周光厚 李朝科 王勇 杨勇 牛童 XIAO Jian;ZHOU Guanghou;LI Chaoke;WANG Yong;YANG Yong;NIU Tong(Dongfang Electric Machinery Co.,Ltd.,618000,Deyang,Sichuan,China)

机构地区：[1]东方电气集团东方电机有限公司,四川德阳618000

出　　处：《东方电气评论》2025年第2期38-43,共6页Dongfang Electric Review

摘　　要：本文建立了以横向月牙槽为主要关注点的三维电磁场有限元计算模型,分析了300 Mvar空冷调相机不同负序时的涡流损耗分布情况。由于局部三维温度场分析的边界条件设置难度大,精确模拟转子最高温度值比较难。而且与300 Mvar空冷调相机的结构型式和冷却方式等方面都完全相同的412 MVA空冷汽轮发电机已经完成了厂内负序能力试验。因此本文通过这两个电机的负序涡流场的有限元对比分析与412 MVA空冷发电机试验测试相结合的方法来确定300 Mvar空冷调相机的稳态负序能力。A three-dimensional electromagnetic field finite element calculation model with the transverse crescent groove as the focus was established in this paper.The distribution of eddy current losses of the 300 Mvar air-cooled condenser under different negative sequence state was analyzed.Due to the difficulty in setting boundary conditions for local threedimensional temperature field analysis,it is difficult to accurately simulate the maximum temperature value of the rotor.The negative sequence capacity test of the 412 MVA air-cooled turbogenerator,which is identical in terms of structure and cooling method to the 300 Mvar air-cooled condenser,was completed in the factory.Therefore,the steady-state negative sequence capacity of the 300 Mvar air-cooled condenser was determined in this paper by means of finite element comparative analysis of the negative sequence eddy current field and the 412 MVA air-cooled generator test.

关 键 词：调相机 负序能力 涡流损耗 有限元 

分 类 号：TM311[电气工程—电机]