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000000264 001__ 264
000000264 037__ $$aENY-ARTICLE-2008-210
000000264 041__ $$aeng
000000264 088__ $$aISBN: 0-85296-559-1
000000264 100__ $$aWiszniewski, A$$uWroclaw University of Technology, Poland
000000264 245__ $$aFuzzy Set Approach to Transformer Differential Relay
000000264 260__ $$c1993-03-05
000000264 300__ $$a4p
000000264 500__ $$aFifth International Conference on Developments in Power System Protection, 1993., York, pp. 169 - 172
000000264 520__ $$aIn the process of decision making by a transformer differential relay often occurs a measure of uncertainty. It is so, because the differential current may be caused by other reasons than internal faults. Because of that, to improve reliability the relays are comparatively slow, because the correct decision requires at least one full cycle of current, and sometimes the delay is much longer. To improve it one may use several criteria and apply the so called `a fuzzy set approach'. Fuzzy sets have become a very powerful mathematical tool to describe quantitatively uncertain values and relations between them. They are perfect to solve the decision making problems in cases when symptoms are uncertain and the situation unclear. If applied to the protective relays they make the best compromise between the speed and selectivity of the protections
000000264 6531_ $$aprotection
000000264 6531_ $$adifferential relay
000000264 6531_ $$afault detection
000000264 700__ $$aKasztenny, B$$uWroclaw University of Technology, Poland
000000264 8560_ $$fleon99@pwr.wroc.pl
000000264 8564_ $$uhttp://zet10.ipee.pwr.wroc.pl/record/264/files/$$zAccess to Fulltext
000000264 909CO $$ooai:zet10.pwr.wroc.pl:264$$pglobal
000000264 980__ $$aARTICLE