Detection Methods of Interharmonics Parameters Based on DFT Filter Banks
There are a large number of interharmonics in electric power system. But if FFT algorithm is directly used for interharmonic analysis, it exists spectrum leakage and hurdle effect. This paper presents using multi-sample rate digital signal processing technology to realize narrowb and low-pass filter, on this basis, using the DFT filter banks to detect interharmonic frequency and amplitude. The simulation results show, the new algorithm has high detection precision.
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[Quanyi Jin (2016) Detection Methods of Interharmonics Parameters Based on DFT Filter Banks IJIREM Vol-3 Issue-6 Page No-471-473] (ISSN 2350 - 0557). www.ijirem.org
School of Mechanical Engineering, Shanghai University of Engineering Science, Shanghai ,China