Title :
Charge comparison protection of transmission lines-communications concepts
Author :
Albrecht, Norman P. ; Fleck, William C. ; Fodero, Kenneth J. ; Ince, Robert J.
Author_Institution :
Dowty Control Technologies, Boonton, NJ, USA
fDate :
10/1/1992 12:00:00 AM
Abstract :
The authors present the basic concepts of a digital approach to the communications requirements of a new transmission line protection scheme. Charge comparison is a new transmission line protection system. It compares local and remote quantities of charge, using a bidirectional communications channel. Charge comparison is a form of current differential relaying. Traditional current differential relaying schemes have three critical communications-related problems: protection is lost if the channel fails, a large channel capacity is required, and precise channel delay compensation is required. In large measure, charge comparison overcomes these three communications-related problems
Keywords :
data communication systems; power system protection; power transmission lines; relay protection; telecommunication transmission lines; channel capacity; charge comparison protection; communications concepts; current differential relaying; precise channel delay compensation; transmission lines; Circuit faults; Copper; Digital relays; IEEE members; Microwave circuits; Optical fibers; Power system protection; Protective relaying; Security; Wideband;
Journal_Title :
Power Delivery, IEEE Transactions on
