Electric grid anomaly location, isolation and service restoration

A method implemented by one or more processors, the method comprising:

• obtaining phasor measurements, each of the phasor measurements being for a corresponding network node of a plurality of geographically distributed network nodes of an alternating current (AC) electric network;
• processing the phasor measurements to determine whether there is an anomaly in the AC electric network, wherein processing the phasor measurements to determine whether there is the anomaly comprises determining whether one or more deviations are present based on:
• comparing the phasor measurements to one or more reference nominal measurements, wherein comparing the phasor measurements to the one or more reference nominal measurements comprises:
• generating a measured representation that is a three-dimensional surface with x and y coordinates that correspond to geospatial locations of the AC electric network, and that is formed based on measurement z values that correspond to the phasor measurements and that are at measurement x and y coordinates, of the x and y coordinates, for the geographically distributed network nodes;
• and
• comparing the three-dimensional surface, of the measured representation, to an additional three-dimensional surface of a nominal representation, of the reference nominal measurements, to determine whether there is the anomaly in the AC electric network;
• determining, based on comparing the three-dimensional surface to the additional three-dimensional surface, that one or more of the deviations are present in a given network node of the corresponding network nodes, wherein one or more of the deviations indicate that there is the anomaly in the AC electric network;
• and
• causing, in response to determining that one or more of the deviations are present in the given network node, isolation of the given network node from the AC electric network.