大型水轮发电机组轴系非线性瞬态响应分析  

Dynamics Analysis of Non-linear Transient Response for Large Hydraulic Generator Unit

作　　者：张立[1] 罗兴锜[1] 郭鹏程[1] 

机构地区：[1]西安理工大学,陕西西安710048

出　　处：《水力发电》2006年第5期48-51,共4页Water Power

基　　金：国家自然科学基金资助项目(90410019);教育部高等学校博士点专项基金资助项目(20040700009);陕西省教育厅专项科研计划项目(05JK264)

摘　　要：以某电站水轮机组为例,建立了水轮发电机组主轴系统动力特性计算的非线性模型,在考虑发电机电磁拉力、水的附加惯性的基础上,同时考虑了水轮机转轮水激力的非线性对水轮机组振动的影响。采用Riccati传递矩阵法和Newmark-β法相结合的方法,对该机组轴系的非线性动态特性进行了比较计算分析,给出了计算结果和讨论,为以后对大型水轮发电机组的轴系动力特性分析提供了参考和技术支持。A nonlinear dynamics model of the rotor-bearing system was established on the basis of taking into account the unbalanced magnetic pull of the generator and inertia of the water in the runner, as well as the influence of hydraulic forces acting on rotor externally. By using the Rieeati transfer matrix method and the Newmark-βmethod, the author calculated and analyzed the rotor-bearing system nonlinear dynamics of the large hydraulic generating unlt,and the caculating result and disscusion are given, which supports the research on the characteristic analysis rotor-bearing system dynamics of large hydroelectric machines.

关 键 词：轴系 非线性 传递矩阵法 水轮发电机组 

分 类 号：TM312[电气工程—电机]