Compressive Sensing Taylor-Fourier Multifrequency Approach for Three-Phase Signals

Phasor Measurement Units represent nowadays a key technology for the development of new monitoring and control applications in transmission and, in a likely future scenario, also distribution systems. For this reason, a lot of effort is ongoing in designing PMU algorithms that are more accurate and responsive. In this regard, addressing the problem of tracking faster dynamics while cancelling the impact of harmonics, interharmonics and wideband disturbances has great relevance. This paper leverages the properties of three-phase signals to unlock the potentiality of recently proposed compressive sensing weighted Taylor-Fourier multifrequency (CS-WTFM) models to design a new algorithm (CS3-WTFM) with higher performance, particularly in the presence of interharmonic interference. Simulations prove CS3-WTFM effectiveness with reductions of total vector, frequency and rate of change of frequency errors of one or even two orders of magnitude under several testing conditions.