Please wait a minute...
浙江大学学报(工学版)
J4  2010, Vol. 44 Issue (8): 1558-1561    DOI: 10.3785/j.issn.1008-973X.2010.08.022
电气工程     
大型汽轮发电机定子绕组端部的振动分析
陈伟梁1,徐博侯1,黄磊2
1.浙江大学 应用力学研究所,浙江 杭州 310027; 2.上海汽轮发电机厂,上海 201112
Vibration analysis of stator winding end baskets of  large turbo-generator
CHEN Wei-liang1, XU Bo-hou1, HUANG Lei2
1.Institute of Applied Mechanics, Zhejiang University, Hangzhou 310027, China;
2. Shanghai Turbo-Generator Company, Shanghai 201112, China
 全文: PDF  HTML
摘要：

为了研究大型汽轮发电机定子绕组端部振动可靠性,需要有效地分析和识别大型汽轮发电机定子绕组端部的椭圆模态,并根据此模态调整相应结构,提高结构稳定性.利用定子绕组的循环对称特性,推导出多重循环结构的摄动法.根据实际中影响循环对称特性的非循环部件或者约束,选取适当的步长,加入非循环对称部分,对原循环结构逐步摄动求解,最后将摄动法求解的结果与试验结果进行比较.结果表明,将非循环部分加入到循环结构后,使用摄动法分步求解,不仅能判断摄动过程中的椭圆模态变化,还能识别并确定感兴趣的椭圆模态.定子端部其他模态亦可用此法确定.
Abstract:

In order to study the vibration reliability of large turbogenerator's stator winding end baskets, it is necessary to effectively analyze and recognize their elliptical modals. Based upon it, the corresponding structures might be adjusted to improve the structural stability. A perturbation method for multicyclic symmetric structure was derived from the structure's cyclic symmetry of stator winding end baskets. When gradually added the proper noncyclic parts or constraints that affected the original cyclic symmetrical structure, one could choose a proper step and solve this problem step by step using a perturbation method. Finally, comparing of the above result with the testing result was done. The result shows that gradually adding noncyclic parts and solving them by the perturbation method can not only see the evolution of elliptical modal, but also recognize the modals interested.  other stator winding end baskets' modals can also be identified by this method.
出版日期: 2010-09-21
:  O 347.6  
通讯作者: 徐博侯,男,教授,博导.     E-mail: xbh@zju.edu.cn
作者简介: 陈伟梁(1982-), 男, 浙江金华人, 硕士生, 从事有限元分析与计算研究. E-mail: rachenry@zju.edu.cn
服务　　
把本文推荐给朋友
加入引用管理器
E-mail Alert
RSS
作者相关文章　　

引用本文:

陈伟梁, 徐博侯, 黄磊. 大型汽轮发电机定子绕组端部的振动分析[J]. J4, 2010, 44(8): 1558-1561.

CHEN Wei-Liang, XU Bo-Hou, HUANG Lei. Vibration analysis of stator winding end baskets of  large turbo-generator. J4, 2010, 44(8): 1558-1561.

链接本文:

http://www.zjujournals.com/eng/CN/10.3785/j.issn.1008-973X.2010.08.022    或    http://www.zjujournals.com/eng/CN/Y2010/V44/I8/1558

［1］ 赵玉婷. 汽轮发电机定子绕组端部振动标准已经修订［J］. 安徽电力科技信息,2005,6(2): 38．
ZHAO Yuting. Vibration standard of stator winding end baskets of turbogenerator revised \
[J\]. Anhui Power Technology Information, 2005,6(2):38.
［2］ RAYLEIGH L. Theory of Sound ［M］. 2nd ed. ［S.l.］: Macmillan,1984: 96117．
［3］ FOX R L ,KAPOOR M P. Rates of change of eigenvalues and eigenvectors ［J］. AIAA Journal, 1968, 2(6):24262429．
［4］ ROGERS L C. Derivatives of eigenvalues and eigenvectors ［J］. AIAA Journal, 1977, 8(5): 943944．
［5］ 陈塑寰.结构动态设计的矩阵理论［M］.北京：科学出版社,1999: 5283．
［6］ 王文亮,张文,罗惟德,等.结构动力学［M］.上海：复旦大学出版社,1999: 359361．
［7］ 胡海昌.弹性力学变分原理及其应用［M］.北京：科学出版社,1981: 103113．
［8］ THILO P. Numerical solution of generalized Lyapunov equations ［J］. Advances in Computational Mathematics, 1998, 8(1/2):3348．
［9］ THILO P. Numerische Lsung gr··er Lyapunov Gleichungen ［M］. Berlin: LogosVerlag, 1998: 5773．
［10］ 王益轩,朱继梅.大型汽轮发电机定子端部绕组的动态仿真模型［J］. 机械工程学报,2005,41(9): 217221．
WANG Yixuan, ZHU Jimei. Numerical simulation model of stator winding end baskets of large turbogenerator ［J］. Chinese Journal of Mechanical Engineering, 2005,41(9): 217221．
No related articles found!