Title :
CT Saturation In Industrial Applications - Analysis and Application Guidelines
Author :
Kasztenny, Bogdan ; Mazereeuw, J. ; DoCarmo, H.
Author_Institution :
Gen. Electr. Multilin, Markham, ON
Abstract :
This paper explains issues associated with instantaneous overcurrent protection in industrial applications where protective relays may be supplied from low-ratio CTs. The problem is analyzed in detail, and its underlying mechanics explained. A formal, compact and easy to grasp method is shown to present complex relations between the CT response and the response of any given relay. Based on this graphical method one can quickly evaluate the problem and clearly see alternative solutions if a problem truly exists.
Keywords :
current transformers; overcurrent protection; relays; current transformers; instantaneous overcurrent protection; protective relays; Circuit faults; Current transformers; Fault currents; Low pass filters; Maximum likelihood detection; Nonlinear filters; Relays;
Conference_Titel :
Developments in Power System Protection, 2008. DPSP 2008. IET 9th International Conference on
Conference_Location :
Glasgow
Print_ISBN :
978-0-86341-902-7
