High-Sensitivity Zero-Sequence Pilot Protection for High-Impedance Faults in Low-Resistance Grounded Distribution Networks
Reliable detection and rapid isolation of single-phase-to-ground faults (SPGFs) in low-resistance grounded systems (LRGSs) are critical for power utilization safety. However, the conventional zero-sequence (ZS) overcurrent protection method exhibits significant limitations in speed and sensitivity under arcing or high-...