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

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

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