The identification of transient fault in series compensated line

Abstract

This paper mainly analyzes the transmission line which is in series with compensation capacitor. For the compensation transmission line will contain rich transient components from low to high frequency when it occurs one phase ground fault. In this paper, we use the low-frequency resonance which generated by series capacitor and shunt inductor to determine the nature of the fault. First, the voltage will be filtered, extracts the low frequency components and integral it to calculating the low-frequency energy. Comparing the energy of arc to determine the nature of the fault, and then to judge whether bypass the series capacitor in order to prepare for recloure.