Analysis of fault location algorithm for transmission line protection based on synchronized phasor measurement

摘要

Fault location techniques are used in power systems for accurate pinpointing of the fault position. Benefits of accurate fault location are fast repair to restore power system, improvement in system availability and performance, reduction in operating costs, saving in time and expense of crew searching in bad weather and tough terrain and in disturbance diagnostics. The latest technique developed uses the synchronized phasor measurement for fault location problem. The security evaluation of the fault location technique was carried out using two-bus system in MATLAB by creating different types of faults on lines. The effect of fault type and location, resistance, incidence angle, series compensation and synchronization error has been studied using MATLAB results. The robustness of fault location algorithm has been determined.