Accurate Dynamic Phasor Estimation by MSAMP Algorithm

The wide access of nonlinear load leads to the generation of dynamic wide frequency signal in the power system, which reduces the power quality and affects the stability of the power system. Therefore, a wide frequency synchronous phasor measurement algorithm can simultaneously take high-frequency phasors is urgently needed. This article proposes an improved compressive sensing algorithm based on sparsity adaptive to calculate and identify broadband dynamic phasors. The results of short-time Fourier transform phasor measurement are corrected to improve the accuracy of phasor measurement and identify the most relevant signal components. The simulation results verify the proposed algorithm's anti-interference and dynamic performance and maintain certain superiority in the comparison algorithm.