A new impedance-based fault location scheme for overhead unbalanced radial distribution networks

A Comprehensive Review of Fault Location Methods for Distribution Power System

“…Fault location by impedance algorithm is a computational process which involves an iteration process. But, the method proposed by [11] uses the Clarke transformation of the measured three-phase voltage and current which eliminates the needs of the long iterative process.…”

Automatic Faulted Feeder Section Location and Isolation Method for Power Distribution Systems Considering the Change of Topology

“…It is novel because other methods such as [3][4][5][6][7][8][9][10][11][12][13] do not consider multiple faults. In addition, the authors of [24] state that their method will have limitations when locating multiple faults.…”

“…In addition, the authors of [24] state that their method will have limitations when locating multiple faults. Besides, many other methods, such as impedance-based methods [3][4][5][6][7][8] have multi-estimation problem, which should be solved using other skills. The new proposed method does not have this problem.…”

“…Some methods have used simple but time-consuming visual inspection to locate the fault [2]. Other fault location algorithms that have been proposed include impedance based methods [3][4][5][6][7][8], travelling-wave based methods [9][10][11], minimum fault reactance methods [12,13], voltage-sag based methods [14][15][16][17], knowledge based methods [18][19][20], and multi-agent approaches [21,22]. However, due to the relatively complex nature of distribution systems, each of these methods has some disadvantages.…”

“…Methods such as electrical-parameter-based methods [3][4][5][6][7][8][9][10][11][12][13][14][15][16][17]24] can determine the fault point or faulted section only, but cannot give the switches that should be opened to isolate the fault. The importance of this is that there is no need to adopt other methods to isolate the fault.…”