Voltage mode stabilisation in power systems with dynamic loads

M. J. Hossain, H. R. Pota, V. A. Ugrinovskii, R. A. Ramos

Research output: Contribution to journalArticlepeer-review

38 Citations (Scopus)

Abstract

This paper presents a novel modelling and excitation control design to enhance large-disturbance voltage stability in power systems with significant induction motor (IM) loads. The excitation controller is designed using minimax linear quadratic Gaussian (LQG) controller synthesis method. The nonlinear power system model is reformulated with a linear and a nonlinear term. The nonlinear term is the Cauchy remainder in the Taylor series expansion and its bound is used, in this paper, in a robust control design. An advantage of this approach over the existing linearisation scheme is the treatment of the nonlinear dynamic load model in a rigorous framework for excitation control design. The performance of the designed controller is demonstrated by large disturbance simulations on a benchmark power system for various types of loads.

Original languageEnglish
Pages (from-to)911-920
Number of pages10
JournalInternational Journal of Electrical Power and Energy Systems
Volume32
Issue number9
DOIs
Publication statusPublished - Nov 2010
Externally publishedYes

Keywords

  • Dynamic load
  • Dynamic voltage stability
  • Linearisation
  • Minimax LQG Control
  • Nonlinearity
  • Robust excitation control

Fingerprint Dive into the research topics of 'Voltage mode stabilisation in power systems with dynamic loads'. Together they form a unique fingerprint.

Cite this