H - Electricity – 01 – H
Patent
H - Electricity
01
H
H01H 83/14 (2006.01) H01H 71/74 (2006.01)
Patent
CA 2636977
In the field of current differential protection relays there is a need for improvements in or relating to the protection relays to allow them to accommodate current transformer saturation while maintaining a desired degree of reliability. A method of operating a current differential protection relay (10, 26) following a fault, the protection relay (10, 26) being electrically coupled to a protection zone of an electrical power system, comprises the steps of establishing a fault condition by discriminating between an internal fault inside the protection zone and an external fault outside the protection zone; and modifying the sensitivity of the protection relay (10, 26) according to the nature of the fault condition. A current differential protection relay (10, 26) comprises a fault discriminator module (20) to establish a fault condition by discriminating between an internal fault inside a protection zone of an electrical power system and an external fault outside the protection zone; and a sensitivity modifying module (22) to modify the sensitivity of the protection relay according to the nature of the fault condition.
Gangadharan Pradeep Kumar
Sidhu Tarlochan Singh
Areva T&d Uk Limited
Goudreau Gage Dubuc
LandOfFree
Improvements in or relating to current differental... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Improvements in or relating to current differental..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Improvements in or relating to current differental... will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1464123