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A method of voltage flicker detection using independent component analysis (ICA) is proposed in this paper. Firstly, envelope curve is detected by square detector. Secondly, harmonious signals which form voltage flicker are separated by using minimum mutual information method and fixed Fast-ICA algorithm. Finally, each harmonic amplitude and frequency are calculated. Simulation results show that this...
This paper introduces a method using second order blind identification (SOBI) algorithm to analyze he voltage flicker signal. An embedded matrix is constructed as the multi-channel input signals. Robust whitening is used to reduce noise and decompose data onto the signal subspace. The SOBI algorithm is used to separate the source signals and get the frequency and amplitude of the voltage flicker....
Blind source separation (BSS) is a class of methods that recover inaccessible independent original signals from unknown mixtures. This paper proposes the niche genetic algorithm in combination with nonlinear blind source separation to solve the global optimization of parameters. The mixing model is the well-known post-nonlinear (PNL) mixture. The natural gradient descent method is applied in minimizing...
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