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In industrial plants with High Resistance Grounding (HRG) configuration, one of the most difficult problems is to accurately detect and locate a ground fault in Adjustable Speed Drive (ASD) systems. This is because: (1) HRG ground fault current (1–10A) cannot reliably trip the over current protection function in drives; (2) In modern industrial plants, the existing methods are hard to detect and locate...
One of the more difficult problems to solve in industrial plants is how to identify and eliminate ground faults in a high-resistance ground (HRG) system. This is because ground-fault conditions in these systems do not draw enough current to reliably trigger fault current sensors in the drive. This article develops an approach to identify the ground-fault location in HRG systems using voltage sensing,...
One of the more difficult problems to solve in industrial plant is to locate and eliminate a ground fault in High Resistance Ground (HRG) system. This is because ground fault conditions in these systems do not draw enough current to reliably trigger fault current sensors in the drive. For an Adjustable Speed Drive (ASD) drive operated in a HRG system, a load side ground fault generates very low fundemental...
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