DETECTION OF ARCING FAULTS ON OVERHEAD LINES FROM VOLTAGE AND CURRENTSIGNALS

In this paper the authors report the results of studies on the develop ment of numerical digital signal processing algorithm for arcing fault s detection on overhead Lines. The algorithm is based on the harmonic analysis of the bus voltage and current signals. It starts working whe n a fault occurs and can be used for blocking automatic reclosing of l ines with permanent faults. A very simple are model has been adopted. The algorithm was successfully tested with the signals recorded on the real power system, and with signals obtained through computer simulat ed tests.