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Harmonic detection method based on compressed sensing theory in the application of APF

According to the demand of harmonic detection of APF, a new method using compressed sensing theory is proposed in this paper. Firstly, the signal is ensured to be expressed as sparse form using compressed sensing technique in actual grid, and harmonic signal detected is reconstructed by orthogonal matching pursuit after compressed sampling. The simulation and experiment results show detection precision and response of the system can be enhanced without the need to increase sampling points, which make it possible to improve the performance of APF with bright application foreground.