Systems and methods for electromechanical oscillation...

Details Systems and methods for electromechanical oscillation... Systems and methods for electromechanical oscillation...

2011-08-16

2011-08-16

Nghiem, Michael P (Department: 2857)

Data processing: measuring, calibrating, or testing

Measurement system in a specific environment

Electrical signal parameter measurement system

C702S059000, C702S069000, C702S074000

Reexamination Certificate

active

08000914

ABSTRACT:
Systems and methods for electromechanical oscillation monitoring are disclosed herein. In one embodiment, a method for monitoring electromechanical oscillation in a power system includes forming a power density spectrum in frequency domain based on phasor measurements collected from a plurality of locations in the power system and identifying an oscillation in the power density spectrum. The oscillation has a power density larger than other oscillations. The method also includes analyzing the identified oscillation in time domain to determine a damping characteristic of the identified oscillation and indicating that an insufficiently damped oscillation exists in the power system if the determined damping characteristic of the oscillation meets a predetermined condition.

REFERENCES:
patent: 5077697 (1991-12-01), Chang
patent: 5414741 (1995-05-01), Johnson
patent: 7065162 (2006-06-01), Sorrells et al.

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