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A new method for transient stability analysis
Author(s) -
Yorino Naoto,
Saito Takeshi,
Kamei Yoshifumi,
Sasaki Hiroshi
Publication year - 2007
Publication title -
electrical engineering in japan
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.136
H-Index - 28
eISSN - 1520-6416
pISSN - 0424-7760
DOI - 10.1002/eej.20245
Subject(s) - transient (computer programming) , trajectory , stability (learning theory) , electric power system , control theory (sociology) , computer science , nonlinear system , function (biology) , contingency , energy (signal processing) , point (geometry) , power (physics) , mathematics , artificial intelligence , physics , linguistics , control (management) , statistics , geometry , quantum mechanics , astronomy , machine learning , operating system , philosophy , evolutionary biology , biology
This paper proposes a brand‐new method for transient stability analysis in power systems. The proposed method directly computes the critical trajectory for a given contingency to obtain the critical condition of the studied system. Although the method may be useful for general nonlinear dynamic systems, it is applied to the problem of obtaining a controlling UEP, unstable equilibrium point, which provides inevitable information for the energy function methods to assess transient stability. Namely, the proposed method effectively yields a critical trajectory on PEBS together with the controlling UEP, thus improving the conventional BCU method. The effectiveness of the proposed method is demonstrated in 3‐machine 9‐bus and 6‐machine 30‐bus systems. © 2007 Wiley Periodicals, Inc. Electr Eng Jpn, 159(3): 26–33, 2007; Published online in Wiley InterScience ( www.interscience.wiley.com ). DOI 10.1002/eej.20245