Stability Analysis of Power Systems by LyapunoVs Direct Method

M. A. Pai, Peter W. Sauer

Research output: Contribution to journalArticlepeer-review


After nearly four decades of research in power system stability via Lyapunov or energy functions, the method is now on the verge of being implemented for assessment of Online dynamic security. The main bottleneck has been in the proper characterization of the stability boundary and defining the fault-dependent region of attraction locally around the controlling unstable equilibrium points. Now there is a better understanding of this issue and, hence, a number of algorithms have been proposed. Improved generating unit models and transmission network models are now being included in the technique. In this paper, an overview is presented of the theory, practical implementation, and future research issues in this area.

Original languageEnglish (US)
Pages (from-to)23-27
Number of pages5
JournalIEEE Control Systems Magazine
Issue number1
StatePublished - Jan 1989

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Modeling and Simulation
  • Electrical and Electronic Engineering


Dive into the research topics of 'Stability Analysis of Power Systems by LyapunoVs Direct Method'. Together they form a unique fingerprint.

Cite this