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This paper proposed a new method to estimate voltage flicker using the discrete Fourier transform (DFT). Based on the specified signal processing recommendations by IEC61000-4-7, the proposed method obtains the amplitude, frequency and phase angle of each harmonic/interharmonic using the odd points interpolation correction method. According to the electric power distortion component symbiosis mechanism,...
Bused on mathematical morphology (MM) and complex wavelet, a novel method on power quality (PQ) disturbance detection and location is presented in this paper. At first, a generalized morphology filter with horizontal linear structure elements is designed to filter impulses and random white noises in PQ disturbance signals. Numerical simulation results show that the characteristics of the original...
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