Robust stability in power systems with nonlinear loads using generalized Kharitonov's theorem

M. A. Pai, R. K. Ranjan, P. W. Sauer

Research output: Contribution to journalArticle

Abstract

In this paper a linear model is systematically derived for an n bus m machine system with nonlinear voltage dependent loads at the network buses. The model is versatile and can be used to study different phenomena such as steady-state stability, voltage stability etc. In addition to obtaining the system A matrix, we also obtain a transfer function between load voltages/angles and real/reactive powers at the network buses which is used for robust stability analysis using generalized Kharitonov's theorem. For a given operating point and a given load model, the system A matrix and the eigenvalues can be obtained easily. Eigenvalues for different load models are investigated.

Original languageEnglish (US)
Pages (from-to)321-328
Number of pages8
JournalInternational Journal of Electrical Power and Energy Systems
Volume16
Issue number5
DOIs
StatePublished - Oct 1994

Keywords

  • load modelling
  • multivariable systems
  • power system dynamics
  • power system stability
  • robust stability
  • steady-state stability

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

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