Amplitude fluctuation quantity kurtosis detection principle-based harmonic contribution quantification method
A quantification method and technology of fluctuations, applied in the direction of measuring electrical variables, measuring electricity, measuring devices, etc., can solve problems such as difficult to accurately and directly measure phase angle values, and achieve the effects of easy engineering application, reducing impact, and ensuring accuracy
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[0043] The technical solutions of the present invention will be further described below in conjunction with the embodiments and the accompanying drawings.
[0044] Such as figure 1 As shown, the harmonic liability quantification method based on the amplitude fluctuation kurtosis detection principle of the present invention comprises the following steps:
[0045] Step 10) collecting harmonic measured data: collecting harmonic voltage amplitude and harmonic current amplitude data to form a harmonic amplitude data sequence;
[0046] Step 20) setting sliding window parameters: respectively setting sliding window length and sliding distance;
[0047] Step 30) Calculate the kurtosis value and filter the subsequence: calculate the kurtosis value of the harmonic voltage amplitude and the harmonic current amplitude in the order of the sliding window for the harmonic amplitude data sequence formed in the step 10), and filter out the peak A subsequence whose degree value is not equal to ...
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