Evaluation of damping of windings in a generator using oscillation energy dissipation

Author

Lei Chen ; Fei Xu ; Yong Min ; Fang Li

Author_Institution

Dept. of Electr. Eng., Tsinghua Univ., Beijing, China

fYear

2014

fDate

27-31 July 2014

Firstpage

1

Lastpage

5

Abstract

A newly proposed oscillation energy analysis method is used to study the damping of a generator with sixth-order model. The oscillation energy dissipations of the field winding and three damper windings are derived, and the energy dissipation coefficients of the windings are defined based on the eigenvector. In the single-machine system, the energy dissipation coefficient of the generator is equal to the damping torque coefficient. The energy dissipation coefficient of a winding can be used to quantitatively evaluate its damping. The method offers a tool for the study of the damping of an individual component in the generator and its features. In simulation cases, the quantitative damping of four windings of a generator is revealed, and the influence of parameters on the damping of different windings is also studied.

Keywords

damping; eigenvalues and eigenfunctions; electric generators; machine windings; oscillations; torque; damper windings evaluation; damping torque coefficient; eigenvector; electric generator; energy dissipation coefficients; field winding; oscillation energy analysis method; oscillation energy dissipation; single machine system; Damping; Energy dissipation; Generators; Oscillators; Power systems; Shock absorbers; Windings; Damping; damper winding; energy dissipation; low frequency oscillation; oscillation energy;

fLanguage

English

Publisher

ieee

Conference_Titel

PES General Meeting | Conference & Exposition, 2014 IEEE

Conference_Location

National Harbor, MD

Type

conf

DOI

10.1109/PESGM.2014.6939047

Filename

6939047