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The analysis of electromechanical modes has become a major concern in power system. A spectral estimation technique using a nonlinear filter for identifying the inter-area oscillatory modes for ambient data is presented in this paper. The proposed method contains three steps: (1) non-linear filtering to remove the non-linear trends from the ambient signals (2) Random decrement (RD) technique for obtaining...
A robust spectral estimation technique for identifying low frequency oscillatory mode is presented in this paper. The effect of outliers is taken into account in the proposed method which occurs due to temporary fault in network or measuring instruments. In order to reduce the effect of such bad data the paper presents a robust covariance approach based TLS-ESPIRIT estimation using multivariate M...
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