Edge Computing Based Fault Sensing of the Distribution Cables Based on Time-Domain Analysis of Grounding Line Current Signals

Due to the complex structures and fault conditions, accurate sensing of underground distribution cables is a difficult task. The automation system (DAS) indicator (FIS) are only applicable severe faults. In addition, current DAS FIS all based on centralized data processing (CDS), increasing communication pressure time main station. Considering advantages edge computing, this paper investigates using grounding line currents sense in cable networks. First, an computing (ECS) designed. equivalent time-domain models considering multi-conductor mutual couplings then established both normal cases. features prior after analyzed create detection criterion. Combining network topology, locations measurement units (MUs), direction factor ground current, space matrix algorithm created achieve section location at edge. Finally, by PSCAD/EMTDC. Various simulations conducted validate effectiveness robustness algorithm.