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. The paper describes how CT replication error impacts protective relay performance by presenting three actual examples of relay performance.
Keywords :
relay protection; transformer protection; CT replication error; current transformers; power system; protective relays; Circuit faults; Current transformers; Fault currents; Generators; Magnetic cores; Relays; Windings; instrument transformers; protective relaying;
Conference_Titel :
Pulp and Paper Industry Technical Conference (PPIC), Conference Record of 2010 Annual
Conference_Location :
San Antonio, TX
Print_ISBN :
978-1-4244-5676-5
DOI :
10.1109/PAPCON.2010.5556511
