汽轮发电机组轴系扭振模型改进

Modification of Shafting Torsional Vibration Model for A Large Sized Turbogenerator Unit

讨论了用试验所得的不完全模态来辩识和修正由有限元法建立起的汽轮发电机组轴系扭振集中参数模型。用最小范数原理导出了模型参数矩阵的修正式，并对国产２００ＭＷ机组进行了实机计算，验证了模型修正方法的有效性。

This paper discusses that concentrate parametric shafting torsional vibration model for a large sized turbogenerator unit built by finite element method is identificated and modificated by incomplete modes using tests. In the paper modification equations of model parametric matrix are built by use of minmum manifold theory, and computation for 200 MW generator set mode in China is done, effect of the model modification method is verified.