Application of superconducting magnetic energy storage unit on damping of turbogenerator subsynchronous oscillation

Author

Lee, Y.-S. ; Wu, C.J.

Author_Institution

Dept. of Electr. Eng., Nat. Taiwan Inst. of Technol., Taipei, Taiwan

Volume

138

Issue

5

fYear

1991

fDate

9/1/1991 12:00:00 AM

Firstpage

419

Lastpage

426

Abstract

A systematic approach is used to design a controller for a superconducting magnetic energy storage (SMES) unit to improve the torsional modes damping of a turbogenerator. To suppress the unstable torsional oscillation, a proportional-integral-derivative (PID) controller is employed to modulate the power input/output of the SMES unit according to generator speed deviation. The gains of the proposed PID controller are determined by the pole assignment method based on modal control theory. Eigenvalue analysis of the studied system shows that the PID controller is quite effective over a wide range of operating conditions. Computer simulations using the nonlinear system model are also performed to demonstrate the damping effort of the proposed controller under disturbance conditions

Keywords

control system synthesis; damping; digital simulation; poles and zeros; superconducting magnet energy storage; three-term control; turbogenerators; PID controller; computer simulations; damping; eigenvalue analysis; modal control theory; nonlinear system model; pole assignment method; proportional-integral-derivative; superconducting magnetic energy storage; torsional modes damping; turbogenerator subsynchronous oscillation;

fLanguage

English

Journal_Title

Generation, Transmission and Distribution, IEE Proceedings C

Publisher

iet

ISSN

0143-7046

Type

jour

Filename

92946