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Transient stability evaluation method based on kinetic energy of postfault trajectories
Author(s) -
Okuda Takahiro,
Nakagawa Shinichi,
Ohsaki Yuta,
Iwamoto Shinichi
Publication year - 2011
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.21018
Subject(s) - transient (computer programming) , reliability (semiconductor) , computation , stability (learning theory) , control theory (sociology) , computer science , kinetic energy , electric power system , reliability engineering , energy (signal processing) , power (physics) , engineering , mathematics , algorithm , physics , statistics , control (management) , quantum mechanics , operating system , machine learning , artificial intelligence
It is very important to maintain supply reliability in the deregulated environment. The transient stability problem is one of the major concerns in studies of planning and operation of power systems. Time domain simulation is currently the best available tool for allowing the use of detailed models and for providing reliable results. The main limitations of this approach involve long computation times. Therefore, this paper proposes a transient stability evaluation method using minimum transient kinetic energy of postfault trajectories. This method can estimate critical clearing times with only two points of the minimum transient kinetic energy, regardless of whether the trajectories after the clearing time are stable or unstable. The validity of the proposed method is shown by simulation studies with the IEEJ EAST 10‐machine 47‐bus system. © 2010 Wiley Periodicals, Inc. Electr Eng Jpn, 174(3): 18–24, 2011; Published online in Wiley Online Library ( wileyonlinelibrary.com ). DOI 10.1002/eej.21018