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A self-organizing fuzzy logic based protective relay-an application to power transformer protection

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4 Author(s)
Kasztenny, B. ; Tech. Univ. of Wroclaw, Poland ; Rosolowski, E. ; Saha, M.M. ; Hillstrom, B.

In the paper the fuzzy logic based multi-criteria protective relay for a three-phase power transformer is presented. Twelve criteria used to stabilize the relay are introduced and integrated by means of multi-objective decision-making methods. The introduced protection scheme contains several internal functions and coefficients which are subject to off-line pre-installation self-setting. Three unique procedures are delivered for self-adjusting the relay, and thus, making it self-organized. The results of testing show significant gains in both sensitivity and selectivity of the self-organized relay compared with traditional approaches

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Power Delivery, IEEE Transactions on  (Volume:12 ,  Issue: 3 )