Table of Contents

Foreword<br>Introduction<br>1 Scope<br>2 Normative references<br>3 Terms and definitions<br>4 Fundamentals of torsional vibration<br>&nbsp;&nbsp;4.1 General<br>&nbsp;&nbsp;4.2 Influence of blades<br>&nbsp;&nbsp;4.3 Influence of generator rotor windings<br>5 Evaluation<br>&nbsp;&nbsp;5.1 General<br>&nbsp;&nbsp;5.2 Frequency margins<br>&nbsp;&nbsp;5.3 Dynamic stress assessments<br>6 Calculation of torsional vibration<br>&nbsp;&nbsp;6.1 General<br>&nbsp;&nbsp;6.2 Calculation data<br>&nbsp;&nbsp;6.3 Calculation results<br>&nbsp;&nbsp;6.4 Calculation report<br>7 Measurement of torsional vibration<br>&nbsp;&nbsp;7.1 General<br>&nbsp;&nbsp;7.2 Method of measurement<br>&nbsp;&nbsp;7.3 Measurement test report<br>8 General requirements<br>&nbsp;&nbsp;8.1 Set supplier responsibilities<br>&nbsp;&nbsp;8.2 Guarantees<br>&nbsp;&nbsp;8.3 Responsibilities<br>Annex A (informative) Torsional vibration measurement<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;techniques<br>Annex B (informative) Examples of frequency margins<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;relative to line and twice line frequencies<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;for shaft system modes that can be excited<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;by torsional oscillations of the shaft<br>Annex C (informative) Commonly experienced electrical<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;faults<br>Bibliography

Abstract

Offers guidelines for applying shaft torsional vibration criteria, under normal operating conditions, for the coupled shaft system and long blades of a turbine generator set.

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Published
Document Type	Standard
Status	Current
Publisher	International Organization for Standardization
Pages
ISBN
Committee	TC 108