A Modal Stabilizer for the Independent Damping Control of Aggregate Generator and Intraplant Modes in Multigenerator Power Plants

Author

Martins, Nuno ; Sanches Bossa, Thiago Henrique

Author_Institution

CEPEL, Rio de Janeiro, Brazil

Volume

29

Issue

6

fYear

2014

fDate

Nov. 2014

Firstpage

2646

Lastpage

2661

Abstract

A modal 2-channel power system stabilizer structure is proposed for multigenerator power plants having units with similar parameters and loading. One channel is designed to damp only the aggregate generator electromechanical mode while the other is designed to damp only the intraplant modes. Simplified analytical models helped to mathematically demonstrate that the dynamics of the two channels of the proposed stabilizer are decoupled by the feedback of specific linear combinations of rotor speeds to each one of the channels. Linear and nonlinear simulation results for a detailed model of a multigenerator plant show the potential gains in using the proposed 2-channel PSS to solve challenging oscillation damping control problems.

Keywords

power generation control; power plants; power system stability; rotors; 2-channel PSS; aggregate generator electromechanical mode; analytical models; independent damping control; intraplant modes; linear combinations; linear simulation; modal 2-channel power system stabilizer structure; modal stabilizer; multigenerator power plants; nonlinear simulation; oscillation damping control problems; rotor; Damping; Mathematical model; Power generation; Power system control; Power system dynamics; Active smart structures; excitation control system; fast exciters; inter-area oscillations; intraplant oscillations; modal control; multivariable control; oscillation damping control; oscillations; power system stabilizers; slow response exciters; stability; transient stability;

fLanguage

English

Journal_Title

Power Systems, IEEE Transactions on

Publisher

ieee

ISSN

0885-8950

Type

jour

DOI

10.1109/TPWRS.2014.2309276

Filename

6777581