Turbine-Generator Shaft Torques and Fatigue: Part II - Impact of System Distribances and High Speed Reclosure

This paper is the second of two papers concerned with the effects of power system disturbances and operating practices upon turbine-generator shafts. This paper presents the results of various simulations for which the type of disturbance and the resulting generator shaft torsional oscillations are correlated with potential loss of life to the shaft system, using techniques described in the companion paper. The implication of these results with respect to the practice of high-speed reclosing is discussed, along with the need for techniques by which those cases requiring detailed study can be identified by conventional system planning studies.