Contents
The use of fast valving control may have a significant effect on life reduction due to torsional fatigue of rotor shafts. In this paper an analytical and numerical study has been applied to calculate the fatigue life reduction for large scale transient electrical disturbances under speed governor control of turbogenerator with reheater and under modern fast-valving control in the intercept valve after the reheater. —Finally, the fatigue life reduction was compared to the improvement of first swing stability under the two control systems.
Übersicht
Die Anwendung des Drehzahlregelsystems mit schnellem Dampfzwischenventil kann bedeutende Konsequenzen auf die Lebensminderung von Rotorachsen wegen Torsionsalterung haben. In dei vorliegenden Arbeit wird eine analytische-arithmetische Methode untersucht, die zur Berechnung der Lebensminderung der Wellen im Übergangszustand nach großen elektrischen Netzstörungen auftreten. —Außerdem wird ein Vergleich der Rechenergebnisse durchgeführt, die für ein Drehzahlregelsystem mit und ohne schnellem Zwischenventil festgestellt wurden.
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Aspragathos, N., Dimarogonas, A. Torsional fatigue life reduction in turbogenerator shafts due to large scale disturbances under fast valving control. Archiv f. Elektrotechnik 64, 275–284 (1982). https://doi.org/10.1007/BF01574758
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DOI: https://doi.org/10.1007/BF01574758