Detection of an electric power system fault direction using traveling waves

A system configured to detect a fault in an electric power delivery system, comprising:

• a data acquisition subsystem configured to receive a plurality of representations of electrical conditions associated with at least a portion of the electric power delivery system;
• a traveling wave detector configured to detect a traveling wave event based on the plurality of representations of electrical conditions;
• a traveling wave directional subsystem configured to:
• calculate an energy value of the traveling wave event during an accumulation period based on the detection of the traveling wave by the traveling wave detector;
• determine a maximum energy value and a minimum energy value of the energy value during the accumulation period;
• and
• determine a fault direction based on the maximum energy value and the minimum energy value;
• a fault detector subsystem configured to declare the fault based on the determined fault direction;
• and
• a protective action subsystem configured to implement a protective action based on the declaration of the fault.