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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。
Taking a hydropower unit of a hydropower station as an example, a nonlinear model for calculating the dynamic characteristics of the main shaft system of a hydroelectric generating set is established. Based on the electromagnetic inertia of the generator and the additional inertia of the water, Influence of Linearity on Vibration of Turbine. The nonlinear dynamic characteristics of the shaft of this unit are compared and calculated by the combination of Riccati transfer matrix method and Newmark-β method. The calculation results and discussions are given. For the future, the dynamic characteristics of the shaft of the large hydrogenerator unit Characteristic analysis provides reference and technical support.