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000000066 001__ 66
000000066 037__ $$aENY-ARTICLE-2008-057
000000066 041__ $$aeng
000000066 088__ $$aI07/91/P-443
000000066 100__ $$aLobos, T$$uWroclaw University of Technology
000000066 245__ $$aDigital Line Differential Protection Using Symmetrical Components
000000066 260__ $$c1991-05-13
000000066 300__ $$a5p
000000066 500__ $$aElect. Power Syst. Res. 1991 Vol. 22 No. 2 pp. 85-89
000000066 520__ $$aA new method for digital line differential protection is presented. The protection compares the time function and the orthogonal function of the symmetrical positive- sequence component at the input and output of a transmission line. From these values the magnitude of the differential current is evaluated. The time function is calculated according to the SD4c algorithm and the orthogonal function according to the SD4s algorithm from four sampled triplets. The first results of the investigation are shown. By using this method, a phase-independent operating time of less than half a period can be obtained.
000000066 6531_ $$adigital line protection
000000066 6531_ $$adifferential protection
000000066 6531_ $$asymmetrical components
000000066 8560_ $$fzbigniew.leonowicz@pwr.wroc.pl
000000066 8564_ $$uhttp://zet10.ipee.pwr.wroc.pl/record/66/files/$$zAccess to Fulltext
000000066 909CO $$ooai:zet10.pwr.wroc.pl:66$$pglobal
000000066 980__ $$aARTICLE