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Power system oscillation modes identifications from wide area frequency measurement system

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2 Author(s)
Gajjar, G. ; Dept. of Electr. Eng., IIT Bombay, Mumbai, India ; Soman, S.A.

Measurements of power system quantities available through wide area measurement systems enables direct observations of power system electromechanical oscillations. But the raw observations data need to be processed to obtain the quantitative measures required to make any inference regarding the power system state. This paper presents some results on oscillation mode identification applied to a wide area frequency measurements system. We discuss the method using rotational invariant techniques for oscillatory mode identifications and issues involved in dealing with low signal to noise ratio. Finally some results on real measurements are presented with our inference on them.

Published in:

Power System Technology (POWERCON), 2012 IEEE International Conference on

Date of Conference:

Oct. 30 2012-Nov. 2 2012