摘要
在进行汽轮发电机组轴系扭振分析时 ,通常假设轴系材料特性参数为常数。然而 ,在实际条件下 ,随着轴系温度分布情况的不同 ,这些特性参数也会相应地发生变化。针对某电厂 30 0MW汽轮发电机组在满负荷工况下的轴系温度分布情况 ,计算了考虑温度分布后轴系扭振各阶固有频率以及响应的变化情况 。
In the process of torsional vibration analysis for turbogenerator rotors, the material characteristics parameters of shafts are often considered to be constant. But in real environment, these parameters are different with the variation of temperature distribution. The purpose of this paper is to illustrate the effect of these parameters. Under the real temperature distribution condition of a 300?MW turbogenerator rotors at full power, we calculates torsional natural frequencies and responses of two phase circuit disturbance, and summarizes the impact of temperature distribution to torsional vibration of rotors.
出处
《中国电机工程学报》
EI
CSCD
北大核心
2000年第11期10-12,16,共4页
Proceedings of the CSEE
基金
国家攀登计划资助项目! (PD952 1 90 7)
关键词
汽轮发电机组
转子
温度分布
扭转振动
turbogenerator
torsional vibration
impact of temperature distribution
