Title :
Simulation of differential current protection schemes involving multiple current transformers and a varistor
Author :
Chandrasena, Waruna ; McLaren, P.G. ; Jayasinghe, R.P. ; Muthumuni, Dharshana ; Dirks, Erwin ; Parker, Adrian
Author_Institution :
Manitoba Univ., Winnipeg, Man., Canada
Abstract :
This paper presents the simulation of multiple current transformers (CTs) operating in parallel into a common spill circuit. The voltage across the spill branch in the high impedance case can be quite high and a varistor (MOV) may be placed across the spill branch to keep this voltage within safe limits.
Keywords :
current transformers; electric impedance; power system protection; varistors; common spill circuit; differential current protection simulation; high impedance; metal oxide varistor; multiple current transformers; parallel operation; relays; spill branch; Circuit simulation; Coils; Current transformers; Impedance; Protection; Protective relaying; Remanence; Resistors; Transformer cores; Varistors;
Conference_Titel :
Power Engineering Society Summer Meeting, 2001
Conference_Location :
Vancouver, BC, Canada
Print_ISBN :
0-7803-7173-9
DOI :
10.1109/PESS.2001.970230
