Directional relaying technique

Details Directional relaying technique Directional relaying technique

G - Physics

01

R

324/30

G01R 31/08 (2006.01) H02H 1/00 (2006.01) H02H 3/08 (2006.01) H02H 3/38 (2006.01) F02B 75/02 (2006.01)

Patent

CA 1122655

ABSTRACT OF THE DISCLOSURE Directional relay and method for monitoring at least one A.C. power transmission line to determine the position of a fault on the line with respect to a measurement location thereon. According to a representative embodiment characteristic para- meters, typically the respective phases, of a first signal representing the difference of complex voltages after and before the occurrence of the fault and of a second signal representing the line current after the occurrence of the fault, are compared, the result of the comparison providing the desired indication.

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