Patent ID: 8810251
Filing Date: 2014-08-19
Classification: G01R,Y04S

Abstract:
1. A method for locating faults on an electrical distribution network, the method comprising: monitoring, by one or more smart meters, a plurality of voltage values associated with the electrical distribution network; detecting transient under voltage conditions associated with a power system fault by measuring and computing RMS or phasor magnitude of a fundamental voltage component once every cycle; when one or more of the plurality of monitored voltage values indicate a power system fault: storing at least a portion of monitored line voltage values; formatting a fault voltage profile; indicating a detected fault by transmitting one or more last gasp messages with a fault voltage profile immediately prior to loss of power from the one or more smart meters or line sensors to a central station receiver, wherein the one or more last gasp messages comprise the monitored and stored line voltage values and line current values;