Fault Detection Model of Low-Voltage Distribution Network Topology Based on Power Line Carrier

Due to the influence of power line carrier (PLC) signal characteristics on low-voltage distribution networks, fault detection stability and reliability are compromised. This paper introduces a PLC-based fault detection model for such networks. By constructing a PLC signal model and analyzing its characteristics through signal detection, we enhance the carrier signal filtering using a signal enhancement algorithm and analyze the conductance frequency distribution. With the aid of spectrum component detection, we integrate PLC information. By examining the distribution network's topology structure characteristics, we perform fault detection. Using the PLC's differential characteristic quantity, we diagnose grid topology faults and establish fault detection and diagnosis models for lowvoltage distribution network topologies. The fault detection analysis is achieved through the output characteristic distribution of resonant inductance and capacitor. Simulations demonstrate high stability and reliability in fault detection for low-voltage distribution network topologies, enhancing their safe operation and maintenance management capabilities.