DOI: https://doi.org/10.15407/techned2017.05.067

ON-LINE IDENTIFICATION OF LOW-FREQUENCY MODES OF ELECTROMECHANICAL OSCILLATIONS IN POWER SYSTEMS

Authors
O.F. Butkevych^1,2, V.V. Chyzhevskyi^2
1 – Institute of Electrodynamics National Academy of Sciences of Ukraine,
pr. Peremohy, 56, Kyiv, 03057, Ukraine,
e-mail: Этот e-mail адрес защищен от спам-ботов, для его просмотра у Вас должен быть включен Javascript
² – National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute”,
pr. Peremohy, 37, Kyiv, 03056, Ukraine

Abstract

The article presents comparative identification results of low-frequency components of the signals in the cases of using their both effective and instantaneous values. It is shown that using of instantaneous values of power system operational condition parameters measured by phasor measurement units will increase a detection reliability of low-frequency modes of electromechanical oscillations, however, such use in real time will require a high processor speed. Therefore, for reliable detection of low-frequency modes it is more expedient to increase the observation window’s width and to use the effective values of the power system operational condition parameters. References 10, figures 6, tables 3.

Key words: power system, low-frequency modes, electromechanical oscillations, data sampling, instantaneous values.

Received:     28.04.2017
Accepted:     30.06.2017
Published:   17.08.2017

References

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