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For neutrally ungrounded systems, it is very difficult to identify the line experiencing single-phase to ground fault. This is due to the fact that the non-effectively grounded system produces a very small fault current. This paper presents a novel method that can help to overcome this difficulty. The idea is to convert the ungrounded system into a grounded system temporarily through a judicially...
Through a small current grounding system of single-phase grounding to steady state and transient analysis and the existing line selection methods are analyzed and compared, their advantages and shortcomings can be gotten. The line of the selection method in the future was pointed out. The wavelet analysis was introduced to selection methods of faults and the fault lines can be selected in the wavelet...
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