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An assessment of the dynamic interactions between generators will provide valuable information which could improve control action and hence maintain stability in the interconnected system. The paper presents the study on dynamic interaction in terms of coherency established among the generators following a particular event. Time Frequency Coherency (TFC) method is applied to trace the coherency among...
This paper presents spectral-based dynamic approach for mode shape estimation by using time-domain signals. The approach in this paper is applied on software simulated signals which partially resembles the PMU signals. Power System Toolbox (PST) is used to simulate IEEE 16 machine 68 bus test system to generate multiple signals. Empirical mode decomposition (EMD) decompose multimode signal into separate...
This paper presents a systematic approach to detect the frequency of Forced Oscillation (FO) in real-time signals obtained from phasor measurement units (PMUs). It is shown that, preprocessing of the signal by Empirical Mode Decomposition (EMD) technique leads to effective detection. The designed methodology can detect the frequency of FOs even in the presence of multiple mode mixing, whereas the...
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