汽轮发电机组轴系扭转振动固有特性计算

本文将带有附加集中惯量的多段集中质量数学模型与传递矩阵法相结合应用于汽轮发电机组轴系扭振的固有特性计算中。通过对国产300MW汽轮发电机组轴系的扭振固有特性的实际计算结果与现场实测结果进行对比，表明该方法既简单又具有较高精度。适合于多跨大型轴系的扭振固有频率和振型的计算。

Calculation of Inherent Characerisics of Steam turboset Shafting

In this papper, introducing the based on discrete method of additional focus of inertia with the transfer matrix method to the inherent characerisies calculation of Steam turbine generator. Through calculations of the inherent charaeerisies of domestic 300MW turbine-generator shaft torsional vibration, and with Field measurement results were compared show that the method is simple and has high accuracy.？And suitable for largescale multi-span shaft torsional vibration of nature frequency and mode shape calculations.