Analyse The Torsional Vibration Of The Interaction Between Turbine Generator And Electric Power Network

Along with the occurrence of several accidents caused by rotors torsional vibration all over the world,the problem of rotors Torsional Vibration has drawn abroad attentions. Research on the torsional vibration,not only has important academic significance,but also can give much instructional value to the project.In this paper,the mechanism and generator-network model used in the steam turbogenerator shafts are made and supplementary excitation damping controller(SEDC) are emphatic introduced,also,the 600MW power plant of YiMin turbo-generator shafts are calculated including torsional vibration characteristic,of course,it is necessary to analyse the fatigue life loss of subsynchronous torsional oscillation(SSO) and the two-phase short circuit,meanwhile the shafts security is appraised.