Damping torsional oscillations due to network faults using the dynamic flywheel damper

Author

Tsai, W.C. ; Chyn, C. ; Tsao, T.P.

Author_Institution

Dept. of Electr. Eng., Nat. Sun Yat-Sen Univ., Kaohsiung, Taiwan

Volume

144

Issue

5

fYear

1997

fDate

9/1/1997 12:00:00 AM

Firstpage

495

Lastpage

502

Abstract

The technical feasibility of using a dynamic flywheel damper to damp shaft torsional oscillations in large turbine generators is investigated. Torsional damping is achieved using the slide friction force of the flywheel damper based on generator speed. A system is defined and the shaft torques following various electrical system disturbances are evaluated and analysed. It is shown that substantial damping can be implemented with a well designed flywheel damper, thus reducing the risk of significant shaft damage due to network disturbances. The equivalent models and designs for the flywheel dampers fitted into the shaft couplings of turbine mechanical systems are also described. This method can effectively damp the torsional oscillations due to the high reliability of the damper

Keywords

damping; electrical faults; flywheels; oscillations; sliding friction; time-domain analysis; torque; turbogenerators; dynamic flywheel damper; equivalent models; generator speed; high reliability; network faults; shaft damage risk reduction; shaft torques; shaft torsional oscillations damping; slide friction force; time domain simulation; torsional oscillations damping; turbine generators; turbine mechanical systems;

fLanguage

English

Journal_Title

Generation, Transmission and Distribution, IEE Proceedings-

Publisher

iet

ISSN

1350-2360

Type

jour

DOI

10.1049/ip-gtd:19971264

Filename

629510