A Comparative Study of Prony Based Method for Identification of Low-Frequency Oscillations in the Power System

A Comparative Study of Prony Based Method for Identification of Low-Frequency Oscillations in the Power System
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© 2021 by IJETT Journal
Volume-69 Issue-8
Year of Publication : 2021
Authors : Abhinav Pathak, Ratnesh Gupta
DOI :  10.14445/22315381/IJETT-V69I8P221

How to Cite?

Abhinav Pathak, Ratnesh Gupta, "A Comparative Study of Prony Based Method for Identification of Low-Frequency Oscillations in the Power System," International Journal of Engineering Trends and Technology, vol. 69, no. 8, pp. 174-178, 2021. Crossref, https://doi.org/10.14445/22315381/IJETT-V69I8P221

Abstract
In a modern power system, low-frequency electromechanical oscillations get triggered due to many reasons like a sudden change in load; these oscillations may lead to power system instability if the oscillations are not damped, which may finally lead to the collapse of the system. Hence accurate and precise estimation of the parameters of low-frequency oscillation in a power system is of utmost importance. In this research paper, the performance of two Prony based methods is compared for identifying dominant low-frequency oscillations. The performance is compared in terms of attenuation factor and frequency of oscillation with different noise levels and sampling rates of the Phasor Measurement Unit (PMU) with the synthetic signal generated in MATLAB and realtime data obtained from Western Electricity Coordinating Council (WECC).

Keywords
Attenuation factor, Low-frequency oscillations, Phasor Measurement Unit, Power System, Prony Method.

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