Functional sensitivity concept and its application to power system damping analysis

Author

Zhou, E.Z.

Author_Institution

EDSA Miroc Corp., Bloomfield Hills, MI, USA

Volume

9

Issue

1

fYear

1994

fDate

2/1/1994 12:00:00 AM

Firstpage

518

Lastpage

524

Abstract

A new sensitivity concept, in which the sensitivity is calculated with respect to the change of a transfer function as an independent complex variable, is proposed and its application to power system damping analysis investigated. A general expression for calculating the sensitivity in terms of hybrid representation of dynamic systems and a formula to predict mode displacements due to changes in some of the feedback controller´s parameters are presented to facilitate the sensitivity analysis. The new concept is illustrated through a simple 2nd-order system and the analysis procedures demonstrated by using a simplified power system stabilizer application example. The approaches of applying the sensitivity concept to analyze power system damping are shown. The results of a 13-machine power system study are given

Keywords

damping; feedback; power system control; power system stability; sensitivity analysis; 13-machine power system; 2nd-order system; dynamic systems; feedback controller; functional sensitivity concept; mode displacements prediction; power system damping analysis; power system stabilizer; transfer function change; Control systems; Damping; Eigenvalues and eigenfunctions; Hybrid power systems; Power system analysis computing; Power system dynamics; Power system stability; Power systems; Sensitivity analysis; Transfer functions;

fLanguage

English

Journal_Title

Power Systems, IEEE Transactions on

Publisher

ieee

ISSN

0885-8950

Type

jour

DOI

10.1109/59.317571

Filename

317571