Title :
Guidelines for current transformers selection for protection systems
Author_Institution :
Cooper Power Syst., Franksville, WI, USA
Abstract :
If current transformer (CT) characteristics are not properly selected for fault conditions, saturation will occur and relays can misoperate. To help protection engineers select the appropriate CT, the IEEE published two documents on CT performance and application. This paper compares the guidelines in these two documents and suggests modifications that will make CT selection easier and more realistically estimate CT time-to-saturation.
Keywords :
IEEE standards; current transformers; power system protection; power system relaying; power transformers; relay protection; IEEE guidelines; current transformer saturation; current transformer selection guidelines; fault conditions; power network relay protection systems; relay misoperation; time-to-saturation estimation; transformer characteristics; Circuit faults; Current transformers; Equivalent circuits; Guidelines; Inductance; Magnetic flux; Power system protection; Power system relaying; Protective relaying; Transient analysis;
Conference_Titel :
Power Engineering Society Summer Meeting, 2001
Conference_Location :
Vancouver, BC, Canada
Print_ISBN :
0-7803-7173-9
DOI :
10.1109/PESS.2001.970105
