A Microcomputer-Based Unique Digital Fault Diagnosis Scheme of Radial Transformer Feeders

Distributed Insulation Monitoring for U.K. 650-V Railway Signaling Power Supplies Using Rectified Current Difference Pattern Tracking

“…Various cable diagnostic techniques are currently in use and can be generally categorised by their fundamental principles: a) Impedance-based terminal methods [3][4][5][6][7][8][9][10][11][12]. b) Wavelet analysis-based methods [13][14][15][16][17][18][19].…”

Locating Phase-to-Ground Short-Circuit Faults on Radial Distribution Lines

“…Extensive research has been done over many years on fault location for radial distribution lines with measurements available at a single location. Generally speaking, fault location methods can be divided into impedance based [1]- [8] and traveling wave based [9]- [12]. Impedance-based methods are more popular among the utilities because of their relative simplicity [3].…”

“…An automated fault location system for primary distributed network was proposed [7], in which a recursive algorithm based on the voltage and current phasor quantities is used to determine all possible fault points. Recently, a microcomputerbased fault diagnosis scheme for radial feeders that the analysis and modeling of faults take the transformer into consideration has been proposed [8]. Instead of using the fundamental frequency voltage and current signals of the impedance-based fault location method, traveling wave methods are based on the reflection and transmission of the fault-induced traveling waves on the faulted power network.…”