An improved iterative method for assessment of multi-swing transient stability limit

Minghui Yin, C. Y. Chung, K. P. Wong, Yusheng Xue, Yun Zou

Research output: Journal article publicationJournal articleAcademic researchpeer-review

43 Citations (Scopus)


This paper addresses the issue of improving the conventional iterative method used for integrated extended equal area criterion (IEEAC) and single machine equivalent (SIME) for multi-swing transient stability limit analysis in power system operation. Effects of the complicated phenomena on the conventional method, i.e., nonmonotonic variation of the stability margin and the isolated stability domain (ISD), are studied. Accordingly, the conventional method is improved for both efficiency and accuracy. With this knowledge, an improved sensitivity-based iterative method for searching multi-swing transient stability limit is proposed. The advantage of this method is that the complicated phenomena are fully considered and their effects are either overcome or avoided as much as possible. Case studies on the ten-generator New England power system are presented to verify the effectiveness and efficiency of this improved method.

Original languageEnglish
Article number5723038
Pages (from-to)2023-2030
Number of pages8
JournalIEEE Transactions on Power Systems
Issue number4
Publication statusPublished - Nov 2011


  • Extended equal area criterion (EEAC)
  • multi-swing stability limit
  • power system transient stability
  • single machine equivalent (SIME)

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering


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