Why is ferroresonance a concern in distribution systems, and what mitigation techniques can be employed?

Ferroresonance is a nonlinear resonance phenomenon that can occur in power systems when a capacitive reactance is connected in series with a nonlinear inductive reactance, typically the magnetizing inductance of a transformer. It's a concern because it can lead to overvoltages, overcurrents, and harmonic distortion, potentially damaging equipment and disrupting service. Ferroresonance is often triggered by switching operations, such as energizing an unloade....