Title :
Impact of CT Errors on Protective Relays—Case Studies and Analyses
Author_Institution :
GE Digital Energy Multilin, Apex, NC, USA
Abstract :
Current transformers (CTs) are the basic interconnection between the power system and protective relays. One of the practical concerns for the protection engineer is the actual ability of a CT to replicate the primary current. This paper describes how CT replication error impacts protective relay performance by presenting three actual examples of relay performance.
Keywords :
current transformers; power system interconnection; relay protection; CT replication error; current replication; current transformer; power system interconnection; protection engineer; protective relay; relay performance; Circuit faults; Current transformers; Fault currents; Generators; Protective relaying; Windings; Instrument transformers; protective relaying;
Journal_Title :
Industry Applications, IEEE Transactions on
DOI :
10.1109/TIA.2011.2175879
