H - Electricity – 02 – H
Patent
H - Electricity
02
H
348/25, 324/58
H02H 3/34 (2006.01)
Patent
CA 1315867
FAULTED PHASE SELECTOR FOR SINGLE POLE TRIPPING AND RECLOSING SCHEMES ABSTRACT OF THE DISCLOSURE A phase selector for identifying a faulted phase in a three-phase alternating current electrical current distribution system generates, for each of the three phases, an output signal which includes the phasor sum of a signal related to a fault component of current flowing in the phase, a signal related to a negative sequence component of current flowing in the phase and a signal related to a zero sequence component of current flowing in the phase. The phase selector also generates at least one restraint signal which includes the phasor sum of a signal related to a fault component of current flowing in one of the two other phases of the three phase power distribution system, a signal related to a fault component of current flowing in the other of the two other phases of the three phase electrical power distribution system and a signal related to the negative sequence component of current flowing in the phase. A net operate signal is generated when the magnitude of the operate signal exceeds the magnitude of the restraint signal.
583398
Company General Electric
Craig Wilson And Company
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