汽轮发电机组H_∞扭振模态观测器的特性分析

DISCUSSION ON CHARACTERISTICS OF H_∞ TORSIONAL MODAL OBSERVER OF TURBINE-GENERATORS

对汽轮发电机组的 H∞ 扭振模态观测器的特性进行了讨论。通过分析 H∞ 扭振模态观测器的性能指标可知 ,H∞ 扭振模态观测器引入了一个反映受控模态估计偏差对剩余模态分量的最大能量增益的约束 ,以抑制剩余模态分量的影响。另外发现 ,在特殊情况下 ,H∞ 扭振模态观测器可以将已有关于鲁棒 H∞ 扭振滤波器的研究成果统一起来。

Some characteristics of the H∞ torsional modal observer of turbine-generators are discussed. According to the performance specification of the H∞ torsional modal observer, a bound of the maximum energy gain between the estimation error and the residual modes is introduced to attenuate the effect of the residual modes. Moreover, it is shown that the H∞ modal observer can cover the existing study results of the robust H∞ torsional filter in the special cases.