Behaviour of low frequency spectra during arcing fault and switching events

Distribution feeder faults modulate primary current and generate noise through arcing phenomena. The variation and behaviors selected low frequencies during fault conditions are presented. These are contrasted with normal events such as feeder-switching and capacitor-bank operations. Recorded field data have been analyzed, and the statistical results are presented. Specific behavior characteristics such as arc duration, arc repetition rate, and magnitude of low-frequency spectra are presented. Comparisons are made for different soil types and conditions