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Published Article / ENY-ARTICLE-2008-197

A multi-criteria differential transformer relay based on fuzzy logic

Wiszniewski, A (Wroclaw University of Technology, Poland) ; Kasztenny, B (Wroclaw University of Technology, Poland)


Abstract: This paper presents a digital relay scheme for the primary protection of power transformers. A multi-criteria algorithm is developed based on fuzzy sets for the decision making part of the scheme. The cost of wrong decision-making and the amount of information inflow are used along with several standard criteria to improve the reliability of the protection. It is shown that the proposed scheme, if properly tuned, can enhance the sensitivity and selectivity of the digital relay and mitigate problems associated with conventional relay schemes.

Keyword(s): Digital Transformer Protection ; Decision Making ; Fuzzy Sets
Note: IEEE Transactions on Power Delivery, Vol. 10, No. 4, October 1995, pp. 1786-1792

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Record created 2008-11-03, last modified 2008-11-03

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