Sensitivity of torsional stress predictions of diesel generator sets to critical parameter values

Author

Konidaris, D.N. ; Tegopoulos, J.A.

Author_Institution

Public Power Corp., Greece

Volume

11

Issue

3

fYear

1996

fDate

9/1/1996 12:00:00 AM

Firstpage

515

Lastpage

522

Abstract

In the present paper a new method is presented for the evaluation of torsional stressing of diesel-generator sets consisting of components with uncertain torsional characteristics. A frequency scanning technique is implemented for eigenvalue analysis of the elastic system. Due to the uncertainty of the values of stiffness and damping coefficients, a sensitivity analysis method is also presented, suitable for the evaluation of the range of the mechanical stresses. Special consideration is given to the correct simulation of the coupling to the electric network, including the influence of generator regulators and possible network interactions. An exact formula is extracted for the synchronizing and damping torque coefficients. The method presented was checked in a diesel power station of the autonomous electric system of a Greek island

Keywords

damping; diesel-electric generators; diesel-electric power stations; eigenvalues and eigenfunctions; elasticity; sensitivity analysis; stress analysis; torsion; vibrations; Greek island; autonomous electric system; damping torque coefficient; diesel generator sets; eigenvalue analysis; frequency scanning technique; generator regulators; mechanical stresses; sensitivity; synchronizing torque coefficient; torsional stress predictions; uncertain torsional characteristics; Couplings; Damping; Eigenvalues and eigenfunctions; Frequency synchronization; Power generation; Regulators; Sensitivity analysis; Stress; Torque; Uncertainty;

fLanguage

English

Journal_Title

Energy Conversion, IEEE Transactions on

Publisher

ieee

ISSN

0885-8969

Type

jour

DOI

10.1109/60.537002

Filename

537002