Abstract In accordance with the identification of the faulted distribution line in our country, this paper presents a novel method that can help to overcome this difficulty. The idea is to implement a temporarily controlled short-circuit on the PT second side open-delta coil when the distribution power system is experiencing a single-phase to ground fault. The result is a controllable ground fault current that is large enough for identifying the faulted line and yet small enough not to cause system problems. The signal detectors in feed line port detect and distinguish the signals and find the faulted line. Results of theoretical analysis, computer simulation and lab experiments have all confirmed the effectiveness of the proposed method.
Zhu Ke,Pei Younan,Chen Chen等. Self-Adaptable and Current Controllable Faulted Line Identification Scheme[J]. Transactions of China Electrotechnical Society, 2009, 24(8): 174-182.
2009, Vol. 24 
