Transactions of China Electrotechnical Society  2018, Vol. 33 Issue (zk1): 121-128    DOI: 10.19595/j.cnki.1000-6753.tces.180602
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A Precise and Rapid Algorithm for Harmonic Analysis Based on Multi-Spectrum-Line in Main Lobe Width Interpolation FFT
Zhang Junmin1, Liu Kaipei2, Wang Li3, Zhang Ying1
1. Collage of Computer Science South-Central University for Nationalities Wuhan 430074 China;
2. College of Electrical Engineering Wuhan University Wuhan 430072 China;
3. State Grid TianJin Electric Power Company Tianjin 300000 China

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Abstract  This paper has induced multi-spectrum-line interpolation algorithm based on main-lobe width. At the same time, we have proved that the phase difference of any two adjacent spectrum lines is. According to this rule, this paper has induced a rapid algorithm so that square root is only calculated one time when we analyze some harmonic parameters. Based on the different order’s hanning self-multiplication windows, the simulation results have shown that the multi-spectrum-line interpolation algorithm has higher precision than double/triple-spectrum-line interpolation algorithm especially when the order of polynomial is lower than two others if obtaining same precision and the rapid algorithm can save calculation amount greatly.
Key wordsHarmonic analysis      window function      main lobe width      multi-spectrum-line interpolation      multiplication     
Received: 10 April 2018      Published: 26 September 2018
PACS: TM935  
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Zhang Junmin
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Zhang Junmin,Liu Kaipei,Wang Li等. A Precise and Rapid Algorithm for Harmonic Analysis Based on Multi-Spectrum-Line in Main Lobe Width Interpolation FFT[J]. Transactions of China Electrotechnical Society, 2018, 33(zk1): 121-128.
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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.180602     OR     https://dgjsxb.ces-transaction.com/EN/Y2018/V33/Izk1/121
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