On the basis of the instantaneous reactive power harmonic detection method,a current harmonic detection method based on mathematical morphology is presented in this paper.The presented method can effectively deal with such problems as delay and complicated calculation in electrical network harmonic current examination.The harmonic components in the current will be detected accurately through the rational choosing of the length of the flat structural elements and the processing of the sampled signals.With a high detective sensitivity,even when there are system noises,the proved method is also o...
