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Transmission system events and operations which have the potential for removing significant fatigue life fram turbine-generator shafts are described. The factors which limit the fatigue capability of turbine-generator shaft systems are presented, along with a discussion of analytical models and their limitations for estimating the shaft fatigue duty following a defined electrical disturbance. The basis for a screening guide value for planned switching operations presented to the IEEE Working Group studying the effects of high speed switching is also discussed.
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Walker et al. (1981) studied this question.
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