FIELD: electrical engineering.
SUBSTANCE: one measures dominant frequency complex phase currents and voltages (angularly non-synchronised) from the two ends of the line at the short circuiting moment. One measures the angle between similar voltages at the line ends. One performs synchronisation by means of turning the vectors of the complex current and voltage values by the measured angle. One converts the measured currents and voltages into symmetrical components (complex currents and voltages of the positive, negative and zero phase sequence) and determines relative distances from the line ends to the damage spot.
EFFECT: increased accuracy of damage spot detection.
3 cl, 2 dwg
