Title :
Transmission line differential protection with fuzzy signal processing support
Author :
Rebizant, Waldemar ; Solak, Krzysztof
Author_Institution :
Wroclaw Univ. of Technol., Wroclaw, Poland
Abstract :
This paper presents a new differential protection scheme for transmission lines with application of fuzzy signal processing. Traditional differential relays may have problems with proper classification of external faults with CT saturation. Better protection stabilization for such cases is obtained with support of fuzzy signal processing. In proposed solution the input signals as well as the standard percentage characteristic are fuzzified. The performance of presented fuzzy protection scheme has been tested with the signals generated with use of EMTP-ATP program and compared to the traditional solution.
Keywords :
fuzzy set theory; relay protection; signal classification; stability; transmission lines; CT saturation; EMTP-ATP program; differential relay; faults classification; fuzzy protection scheme; fuzzy signal processing support; protection stabilization; signal generation; transmission line differential protection; Circuit faults; Current transformers; Fuzzy logic; Power transmission lines; Relays; Testing; Trajectory;
Conference_Titel :
Electrical and Electronics Engineering (ELECO), 2011 7th International Conference on
Conference_Location :
Bursa
Print_ISBN :
978-1-4673-0160-2
