Method for Reconstructing Arc Fault Current Signals and an Adaptive Correction Strategy

A reconstruction method using experimental arc fault data to improve the testing efficiency of protection devices is introduced. By establishing an arc-current database and employing collaborative control of data and circuit feedback signals, the electronic load can be precisely regulated enabling arc fault currents to be reproduced in real-world circuits. To address the frequency mismatches caused by power frequency fluctuations, an adaptive correction control strategy is proposed to eliminate waveform distortions in the reconstructed arc current. Simulations and experiments confirmed the consistency between the arc data and reconstructed current signals, and the method's feasibility was further validated by testing six arc-fault protection devices from different manufacturers.