Torsional Fatigue of Turbine-Generator Shafts Caused by Different Electrical System Faults and Switching Operations
- 1 September 1978
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Power Apparatus and Systems
- Vol. PAS-97 (5) , 1965-1977
- https://doi.org/10.1109/tpas.1978.354693
Abstract
The torsional stresses that occur in large steam turbine- generator shafts due to both planned and unplanned system switching operations are discussed. These operations include routine line switching, reclosing line-to-ground faults by either triple-pole or single-pole breaker operation, reclosing line-to-line and three-phase faults, malsynchronization and load rejection. The calculation of cumulative fatigue of individual turbine-generator shafts from computer-plotted torsional swing traces is explained. The benefits of single-pole breaker operation and of dividing the output of large generators between different electrical systems are briefly mentioned.Keywords
This publication has 2 references indexed in Scilit:
- Effect of clearing short circuits and automatic reclosing on torsional stress and life expenditure of turbine-generator shaftsIEEE Transactions on Power Apparatus and Systems, 1976
- Selective-pole switching of long double-circuit EHV lineIEEE Transactions on Power Apparatus and Systems, 1976