某型汽轮发电机转子扭振固有频率的计算和分析

摘要

将连续质量模型的Riccati传递矩阵法应用于某型汽轮发电机转子扭振的固有频率计算中，通过理论分析及具体计算可以看出，该方法既简便又具有较高精度，且采用此方法计算时与模型划分单元数目无关，是种一较为理想的汽轮发电机转子扭振固有频率计算方法。计算结果表明，某型汽轮发电机转子扭振频率避开了工频与倍频，发电机转子不会因共振而遭到破坏。%The Riccati transfer matrix method of continuous mass model is used to calculate the inherent torsional frequency of Dongfang 600 MW generator rotor. The calculation and analysis reveal that the method is simple and accurate and is ideal for calculating the inherent torsional frequency of generator rotor regardless number of calculating units in the model. Results of the calculation further indicate that the natural frequency of the Dongfang 600 MW generator rotor can avoid its actual line frequency and double line frequency, and therefore the generator rotor may not be damaged by resonance.