Detection or prevention of electrical secondary arc in an electric power delivery system

A method comprising:

• obtaining electrical measurements across a transition point between a bus of an electric power delivery system and a circuit breaker at a first time;
• obtaining electrical measurements across the transition point between the bus of the electric power delivery system and the circuit breaker at a second time;
• determining a difference between the electrical measurements obtained at the first time and the electrical measurements obtained at the second time;
• and
• undertaking protective measures or preventive maintenance to mitigate an electric secondary arc across the transition point based on the difference between the electrical measurements obtained at the first time and the electrical measurements obtained at the second time exceeding a threshold value.

An article of manufacture comprising one or more tangible, non-transitory, machine-readable media comprising instructions that, when executed by a data processing system, cause the data processing system to:

• receive a first electrical measurement across a transition point conductor in an electric power delivery system obtained at a first time;
• receive a second electrical measurement across the transition point conductor obtained at a second time, wherein the second time is after the first time;
• based on the second electrical measurement being more than a threshold value higher than the first measurement, identify an electrical secondary arc across the transition point conductor;
• and
• based on the identification of the electrical secondary arc across the transition point conductor, provide a signal indicative of a protective action to mitigate the electrical secondary arc.