Title :
A digital protection technique for parallel transmission lines using a single relay at each end
Author :
Gilany, M.I. ; Malik, O.P. ; Hope, G.S.
Author_Institution :
Dept. of Electr. Eng., Calgary Univ., Alta., Canada
fDate :
1/1/1992 12:00:00 AM
Abstract :
A novel digital relaying technique for parallel transmission lines is presented. Only one relay at each end of the two lines is used. The idea of the protection algorithm is based on the comparison of the average current of corresponding phases. The technique is simple and avoids many problems of parallel lines. Simulation studies show that the trip signal is generated about 5 ms after the inception of the fault. The stability of the relay under different operating conditions is also examined
Keywords :
electrical faults; power system computer control; power system protection; power transmission lines; relay protection; stability; 5 ms; algorithm; digital relaying; electrical faults; parallel transmission lines; power system relay protection; stability; trip signal; Circuit faults; Digital relays; Power system relaying; Power transmission lines; Protection; Protective relaying; Signal generators; Stability; Transmission lines; Voltage;
Journal_Title :
Power Delivery, IEEE Transactions on
