Anomaly detection in energy systems

An anomaly detector for energy systems, the anomaly detector comprising:

• an array of non-contact magnetic field sensors configured to sense a magnetic field from an energy system to which it is disposed adjacent and to produce magnetic field signals indicating operating currents in the energy system;
• an array of non-contact electric field sensors configured to sense an electric field from the energy system to which it is disposed adjacent and to produce electric field signals indicating operating voltages in the energy system;
• an analog-to-digital converter in operable communication with the array of non-contact magnetic field sensors and the array of non-contact electric field sensors, the analog-to-digital converter being configured to convert the magnetic field signals and the electric field signals into digital signals;
• a filter to remove noise from the magnetic field signals and the electric field signals;
• a feature extractor to extract features from the current and voltage signals to characterize measurement parameters of each signal;
• a data processor configured to perform data clustering of extracted features;
• and
• an anomaly indicator identifying an anomaly from one or more data points that do not fall within a cluster.