Power Quality In Electrical Systems

FERRORESONANCE PREVENTION TUTORIALS

Ferroresonance Prevention Tutorials deal with strategies that electric utilities and end-users could implement to minimize occurrence of the power quality phenomenon. These practices are based from the fact that ferroresonance usually happens with lightly loaded three-phase transformer, having one or two phases open either intentionally or accidentally.

FERRORESONANCE AND TRANSFORMER CONNECTIONS

Ferroresonance and Transformer Connections are related as such that the latter is a significant factor to the occurrence of the former during loss of phase or open phase conditions. There are certain transformer configurations that are more susceptible to ferroresonance. Generally, ferroresonance phenomenon becomes highly probable if the primary windings of the three-phase transformer are ungrounded. Susceptible Transformer Connections Ferroresonance is more likely to happen with... (Ple

POWER QUALITY BASICS: FERRORESONANCE

Ferroresonance is usually described as an irregular and chaotic type of resonance. This phenomenon occurs because of the nonlinear characteristic of iron-core (saturable) inductors - ferromagnetic material such as a transformer. Ferroresonance is often times associated with unwanted and destructive overvoltages, but has found some helpful applications in Constant Voltage Transformers, which can mitigate power quality problems like voltage sags. Basically, ferroresonance involves... (Plea