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A performance-index guided continuation method for fast computation of saddle-node bifurcation in power systems

  • Ke Chen
  • , Anwar Hussein
  • , Martin E. Bradley
  • , Haibin Wan

Research output: Contribution to journalArticlepeer-review

Abstract

Simple performance indices for detecting and predicting stability problems such as the voltage collapse are useful analysis tools for planning and operating engineers in power utilities. We propose a fast guided continuation method to predict or compute a reliable performance index that takes proper care of limits of reactive power resources. The main feature is the novel combination of a Q limits index and a performance index to achieve computational efficiency and index reliability. Numerical experiments using standard IEEE 9-, 14-, 30-, 57-, 118-, 300-bus systems and a NGC 40-bus system show that the proposed method can predict or compute the voltage collapse point much faster than the standard continuation.

Original languageEnglish
Pages (from-to)753-760
Number of pages8
JournalIEEE Transactions on Power Systems
Volume18
Issue number2
DOIs
Publication statusPublished - May 2003
Externally publishedYes

Keywords

  • Continuation method
  • Performance indices
  • Power flow equations
  • Q limit index
  • Reactive power limits
  • Saddle-node bifurcation
  • Voltage collapse

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

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