Abstract
Faulty feeder selection is a very important issue to ensure power supply reliability when a single-phase to ground (SPG) fault occurs in the distribution network. In this paper, a faulty feeder selection method based on improved Hausdorff distance (IHD) algorithm is proposed in the neutral non-effectively grounded system. Through the analysis of the phase-frequency characteristics of equivalent impedance, the fault characteristics in the high frequency band and low frequency band are determined. Then, the dot product of the fault characteristics can be calculated, and the IHD algorithm is utilized to obtain the dot product matrix. Finally, if the maximum value of one or more rows elements in the matrix is less than the sum of the remaining elements, it is judged as the bus fault, otherwise, the feeder corresponding to the maximum sum of the elements in the row is determined to be the faulty feeder. Simulation and recorded field data show that the proposed method can accurately select the faulty feeder under diverse fault conditions.
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