... 09 07 2009 The disturbance of electric power system makes large-scale turbine-generator shafts generate torsional vibration. A available method to restrain the torsional vibration of turbine-generator shafts is that all the natural frequencies of torsional vibration of turbine...

... 09 07 2009 The torsional vibration of turbine-generator shafts can be excited by the disturbance of electric power system. The coupling interaction between the system disturbance and the torsional vibration makes turbine-generator oscillate. Alternate torsional stress due to large...

... Due to the disturbance of electric power system or other shock load, the torsional vibration of turbine-generator shafts occurs. Alternative shear stress due to torsional vibration decreases the shafts life, even results in shafts broken. It is significant to calculate and analyze natural...

.... This paper provides an overview of this failure investigation, which led to the identification of the blades torsional vibrations near 120 Hz and some operation periods with low load low vacuum as the primary contribution to the observed failure. 04 05 2009 Failure analysis High cycle...

... 28 10 2008 With wide application of large-scale turbine-generator sets, the torsional vibration of large-scale turbine-generator set has become the focus of study. Exact measurement of torsional vibration is the key. Proceeding from actual conditions of turbine-generator set...

... 07 10 2008 Due to the disturbance of electric power system or other shock load, the torsional vibration of turbine-generator shafts occurs. It is significant to calculate the response of torsional vibration excited by the disturbance of electric power system in order to analyze...