A phase-to-ground fault detection method based on VMD

The existing methods for detecting and identifying single-phase faults all exhibit certain limitations. This paper introduces a method for selecting faults in small current single-phase grounding systems utilizing the VMD algorithm. First, analysing transient zero-sequence current characteristics associated with the fault. Then, a VMD algorithm is proposed for precisely selecting the fault in systems. Finally, a fault model is built using simulation software and simulated experiments are conducted to verify the effectiveness and high resistance to interference of the method.