A Detection Method of Voltage Flicker Parameters Based on Combined Window Function
A combined window function and voltage flicker technology, applied in the direction of testing dielectric strength, detecting faults according to conductor type, fault location, etc., can solve the problems of inaccurate detection accuracy of voltage flicker parameters, so as to expand the complexity and improve the detection accuracy. The effect of improving the accuracy and window function performance
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[0049] The present invention provides a research on the rapid and accurate detection of voltage flicker under rectangular modulation. Firstly, an improved Teager energy operator for interval sampling is established, based on which the voltage flicker envelope signal under rectangular modulation is extracted; a narrower main lobe is constructed. Kaiser and Rife-Vincent cross-convolution adaptive optimization window function with fast sidelobe attenuation (hereinafter referred to as K-RV inter-convolution adaptive optimization window), deduces the three-line interpolation improved FFT spectrum correction algorithm for extracting fluctuation components, according to This paper proposes a new method for rectangular modulation flicker detection based on the new K-RV interconvolution window of the improved energy operator, and gives the judgment basis for modulation waveform identification. Finally, a large number of simulation experiments are used to verify the effectiveness and feas...
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