Faulted Indicator for Underground Distribution Line using Method of non-working by backfeed Faulted current

摘要

The present invention relates to a fault section display device that enables a user to quickly and accurately find a fault section when a fault occurs in an underground distribution line. The present invention relates to a fault section display device that prevents display malfunction caused by a reverse fault current. The reverse fault current is judged by detecting the change rate of the phase and the fault current magnitude afterwards, and when it is determined as the reverse fault current, the display operation of the fault section display device is prevented so that there is no malfunction. The present invention relates to a malfunction prevention underground fault line display device.;Reverse fault current, fault section, phase, regenerative power, radial line, CNCV