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An approach for explicitly modeling the protective relaying system in substation reliability evaluation studies

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3 Author(s)
C. A. Dortolina L. ; INELECTRA, SA, Caracas, Venezuela ; J. J. Porta ; R. Nadira

The authors present an approach for evaluating the reliability of a power system substation taking into account its associated protective relaying system. The method employs the technique of minimum cutsets to compute the frequency and duration of a fault with respect to the criterion of continuity of electric service. The protective relaying system is accounted for by explicitly incorporating its elements into a new functional model developed for their associated circuit breakers. The approach was implemented in the form of a computer program and used to compare the reliability of several substation arrangements. These comparisons as well as some details on the practical implementation of the approach are also presented

Published in:

IEEE Transactions on Power Systems  (Volume:6 ,  Issue: 4 )