Protective relay with synchronized phasor measurement...

Details Protective relay with synchronized phasor measurement... Protective relay with synchronized phasor measurement...

2005-01-18

2005-01-18

Raymond, Edward (Department: 2857)

Data processing: measuring, calibrating, or testing

Measurement system in a specific environment

Electrical signal parameter measurement system

C324S076110

Reexamination Certificate

active

06845333

ABSTRACT:
The relay system obtains voltage and current values from a power line and uses a first sampling element to sample the voltage and current values at selected intervals of time. The resulting sampled signals are used for power system-wide protection, control, monitoring and metering. The sampled signals are then resampled at a rate which is a selected multiple of the power system frequency. The results of the resampling are used by processing circuitry for protection functions including fault determinations.

REFERENCES:
patent: 4829298 (1989-05-01), Fernandes
patent: 5006846 (1991-04-01), Granville et al.
patent: 5224011 (1993-06-01), Yalla et al.
patent: 5498956 (1996-03-01), Kinney et al.
patent: 5592393 (1997-01-01), Yalla
patent: 6236949 (2001-05-01), Hart
patent: 6446682 (2002-09-01), Viken

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