148 / 2022-07-05 20:32:13

Analysis and Improvement of Line Fault Locating in Power System via Pulse Reflection Method

Fault locating; Fault line; Pulse reflection method; Transient traveling wave; Power system

Power System and Automation > Other topics in Power system

In this context, pulse reflection method for fault locating has been studied based on reviewing the transient traveling wave method in power system. Since the locating accuracy would be diluted by an uncertain wave velocity of feed line, analytical deductions have been conducted to eliminate the wave velocity. Therein, transmission properties have also been considered. Moreover, electrical circuit models have been established in MATLAB Simulink, and the simulations have verified the analytical results. In addition, as for the fault locating in the case of long-distance and high-loss lines, wider initial pulses need to be applied, the influence and solution for such case has been analyzed and caught out either. Both theoretical and simulating results demonstrate that the traditional pulse reflection method has been improved.