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A composite electromechanical distance approach to transient stability

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2 Author(s)
Belhomme, R. ; Inst. Montefiore, Liege Univ., Belgium ; Pavella, M.

To offset the heavy computations involved in power system transient stability studies, the authors decompose the system into internal and external areas and reduce the latter. The identification of these areas relies upon a composite electromechanical distance, designed to assess propagation of transient phenomena relating to a given contingency. To encompass a set of contingencies, a combined composite distance is devised on the basis of the concept of correlation between composite distances. Also, to encompass a set of operating conditions, a similar technique is proposed. A composite distance handling both sets of contingencies and of operating conditions is developed. Overall, the approach attempts to comply with any method of transient stability assessment and to provide a tool for online applications. This network deals with its fundamentals. Essential features such as flexibility, efficiency and reliability are tested and illustrated by means of numerous simulations performed on a 31-machine system

Published in:

Power Systems, IEEE Transactions on  (Volume:6 ,  Issue: 2 )