论文部分内容阅读
The shafting vibration is closely related to the rotational angular speed.The angular speed of hydro turbine generating sets(HTGS)is rapidly change in fault transient,it maybe reduce the shafting damage.By means of energy analysis,the differential equation of shafting vibration for the HTGS is derived,in which include the equation of generator rotor and hydro turbine runner,it can be applied to transient analysis.Shafting model is transformed into first order differential equation groups,and is combined with the motion equation of HTGS to build integrated model.Various additional forces of shafting are taken as input inspire in proposed model,the generality of model is good.At last,the shafting vibration in emergency stop transient is simulated.
The shafting vibration is closely related to the rotational angular speed. It angular momentum of hydro turbine generating sets (HTGS) is rapidly changing in fault transient, it maybe reducing the shafting damage. By the energy equation, the differential equation of shafting vibration for the HTGS is derived, in which include the equation of generator rotor and hydro turbine runner, it can be applied to transient analysis. Shafting model is transformed into first order differential equation groups, and is combined with the motion equation of HTGS to build integrated model .Various additional forces of shafting are taken as input inspire in proposed model, the generality of model is good. At last, the shafting vibration in emergency stop transient is simulated.