Voltage flicker parameter detection method based on extreme point symmetry mode decomposition
作者： Wang Yufei , Zhang Yuhua , Zhao Xiaoke , Xue Hua
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摘要: The invention relates to a voltage flicker parameter detection method based on extreme point symmetry mode decomposition. Based the decomposition theory and algorithm, step ESMD is given. Firstly, signal decomposed into single-frequency amplitude-modulated waves bythe method, then instantaneous amplitude frequency information of each wave obtained by direct interpolation DI method. Theover-fitting under-fitting an envelope EMD overcome, modal aliasing phenomenon can be effectively avoided in without adding noise; defect that result EEMD strongly depends selected noise overcome. has strong self-decomposing ability parameters, high precision, good real-time performance, less false mode, small end-end distortion amplitude-frequency curve, fluctuation.
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