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High Resistance Grounding is preferred in many industrial applications. However, there are some drawbacks for the traditional HRG detection methods to locate a ground fault in Adjustable Speed Drive systems. The existing methods cannot detect or identify which phase faulted once the drive has HRG fault. This paper will present a leakage flux linkage detection based HRG fault identification method...
High-resistance grounding (HRG) is preferred in many industrial applications where the operation continuity is critical under ground fault conditions, such as pulp, paper, oil refining, chemical, glass, and metal industries. This is due to: 1) continuity of service; 2) minimized productivity impact with the scheduled system downtime; and 3) improved safety concerns—elimination of phase to ground arc...
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...
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