Transient signal reconstruction method for single-phase grounding fault based on compressed sensing

As a new type of signal acquisition method, compressed sensing is able to break through Nyquist theory to compress and sample sparse signals, which provides a new idea for single-phase ground fault transient signal acquisition and further determination. In this paper, by analyzing the characteristics of single-phase ground fault transient signals, an algorithm for reconstructing transient signals by orthogonal matching tracking is proposed, and the single-phase ground fault routing decision is verified by the simulation data of ATP-EMTP. The simulation results prove that the reconstructed transient signal based on compressed perception can meet the requirements of accuracy and data volume for single-phase ground fault determination, and the line selection results have high reliability.