Distance-to-fault power outage notification

A system, comprising:

• a metering device located on an electricity distribution grid, the metering device comprising one or more processors and memory to:
• detect a drop in electricity below a threshold indicating a fault on the electricity distribution grid;
• generate, responsive to the drop in the electricity below the threshold, a time series of a rate of change of the electricity for a predetermined number of cycles subsequent to the detection of the drop;
• and
• determine, based on a comparison of the time series of the rate of change with a predetermined pattern, a location of the metering device on the electricity distribution grid relative to a location of the fault on the electricity distribution grid.

A non-transitory computer readable storage medium storing instructions that, when executed by one or more processors of a computing system, cause the one or more processors to:

• receive a plurality of time series of rates of change generated by a plurality of metering devices located on an electricity distribution grid responsive to drops in electricity;
• normalize values of the plurality of time series;
• determine, based on the normalized values of the plurality of time series, a likelihood of fault location at each of the plurality of metering devices;
• determine that a fault is upstream of a first metering device and downstream of a second metering device based on the likelihood;
• and
• provide, responsive to the determination, an indication of a location of the fault upstream of the first metering device and downstream of the second metering device.