A novel method for direct computation CCT for TSA using critical generator conditions

Naoto Yorino*, Ardyono Priyadi, Ridzuan A. Mutalib, Yutaka Sasaki, Yoshifumi Zoka, Hiroaki Sugihara

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

5 Citations (Scopus)


This paper studies new techniques for critical trajectory method, a recent new method proposed by the authors for obtaining critical clearing time (CCT) for transient stability analysis. A specific feature of the proposed method lies in its ability to provide exact CCT without approximations since no such methods have existed so far. The method is based on the computation of the critical trajectory, which is defined as the trajectory that starts from a point on a fault-on trajectory at CCT and reaches an end point. There are a few possible methods for the treatment of the end point conditions, computational performances of the methods are investigated in terms of accuracy of CCT and computational efficiency. It is shown that the proposed methods successfully provide the exact CCT for Xd' generator model with and without controllers that agrees with the conventional numerical simulation method.

Original languageEnglish
Title of host publicationTENCON 2010 - 2010 IEEE Region 10 Conference
Number of pages6
Publication statusPublished - 2010
Externally publishedYes
Event2010 IEEE Region 10 Conference, TENCON 2010 - Fukuoka, Japan
Duration: 21 Nov 201024 Nov 2010

Publication series

NameIEEE Region 10 Annual International Conference, Proceedings/TENCON


Conference2010 IEEE Region 10 Conference, TENCON 2010


  • Critical clearing time
  • Critical trajectory method
  • Electric power system
  • Transient stability analysis


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