Research of online rapid detection method about harmonic and inter-harmonic of power quality
LI Jia-sheng1,2,CHAI Shi-jie2(1.Hunan University,Changsha 410082,China;2.Yiyang Professional Technology Institute,Yiyang 413049,China)
Harmonic and inter-harmonic online rapid detection methods of power quality become increasingly concerned.By using window interpolation theory based fast Fourier transform spectrum analysis and according to the power system harmonics and inter-harmonic characteristics,the " elimination "of harmonic and inter harmonic detection is proposed.This method is easy to be achieved in DSP for rapid detection devices in the online application.Simulation results indicate the accuracy and practicability of this method.
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