Method and system for using phasor measurements in state...

Details Method and system for using phasor measurements in state... Method and system for using phasor measurements in state...

2011-03-08

2011-03-08

Barbee, Manuel L (Department: 2857)

Data processing: measuring, calibrating, or testing

Measurement system in a specific environment

Electrical signal parameter measurement system

C702S065000, C324S108000, C324S141000, C324S142000

Reexamination Certificate

active

07904261

ABSTRACT:
A method of state estimation is provided, including: (a) acquiring a plurality of positive sequence voltage and current phasor measurements; (b) designating a reference positive sequence voltage phasor measurement from the acquired phasor measurements; (c) correcting the acquired phasor measurements to account for the reference phasor measurement; (d) calculating complex power having a real component and an imaginary component, using the corrected positive sequence voltage and current phasor measurement; (e) using the real component of said complex power as a calculated mega-watt and the imaginary component of the complex power as a calculated mega-volt-ampere; and (f) using the mega-watt and mega volt-ampere calculations in a state estimation algorithm.

REFERENCES:
patent: 4907165 (1990-03-01), Toda
patent: 6185508 (2001-02-01), Van Doorn et al.
patent: 6694270 (2004-02-01), Hart
Slutsker, Ilya W. et al., “Implementation of Phasor Measurements in State Estimator at Sevillana de Electricidad”, Power Industry Computer Application Conference, Conference Proceedings, 1995 IEEE, pp. 392-398 (May 7-12, 1995).
Chen, Jian, “Improved Bad Data Processing via Strategic Placement of PMUs” Power Engineering Society General Meeting, 2005 IEEE, pp. 509-513, vol. 1 (Jun. 12-16, 2005).

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