Mechanical vibration - Torsional vibration of rotating machinery - Part 1: Evaluation of steam and gas turbine generator sets due to electrical excitation (ISO 22266-1:2022, Corrected version 2022-08)
Abstract
This document provides guidelines for the assessment of torsional natural frequencies and component strength under normal operating conditions for the coupled shaft train including long elastic rotor blades of steam and gas turbine generator sets. The guidelines apply in particular to the torsional responses of the coupled shaft train at grid and twice grid frequencies due to electrical excitation of the electrical network to which the turbine generator set is connected. Excitation at other frequencies (e.g. subharmonic frequencies) is not covered in this document. No guidelines are given regarding the torsional vibration response caused by steam excitation or other excitation mechanisms not related to the electrical network. The requirements included in this document are applicable to a) steam turbine generator sets connected to the electrical network, and b) gas turbine generator sets connected to the electrical network. Methods currently available for carrying out both analytical assessment and test validation of the shaft train torsional natural frequencies are also described.
Begin
2022-12-21
Planned document number
DIN ISO 22266-1
Project number
00101152
Responsible national committee
NA 001-03-03 AA - Measurement and evaluation of vibration of machines
Responsible international committee
ISO/TC 108/SC 2/WG 1 - Rotordynamics and vibration of machines
draft standard
Mechanical vibration - Torsional vibration of rotating machinery - Part 1: Evaluation of steam and gas turbine generator sets due to electrical excitation (ISO 22266-1:2022, Corrected version 2022-08); Text in German and English
2024-01
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