Distance protection using traveling waves in an electric power delivery system

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

• a data acquisition system to acquire a plurality of electric power delivery system signals from an electric power transmission line;
• a traveling wave system in communication with the data acquisition system to:
• detect a traveling wave based on the plurality of electric power delivery system signals from the data acquisition system;
• analyze the traveling wave using a first mode to determine a first mode arrival time;
• analyze the traveling wave using a second mode to determine a second mode arrival time;
• calculate a time difference between the first mode arrival time and the second mode arrival time;
• a fault location system in communication with the traveling wave system to:
• receive the time difference from the traveling wave system;
• calculate a location of the fault based on the time difference;
• and
• a protection action module to implement a protective action based on the location of the fault.