Classification of ferroresonance phenomena
Ferroresonance in networks - Definition, description and classification

A number of cases of ferroresonance have appeared in electrical networks, and time records of the signals (voltages, currents, etc.) are available from on-site measurements. Specific tests on models and numerical simulations have also been used to build up this database of examples [1][3]. Analysis of these different signals enables them to be classified into 4 distinct types:

• fundamental regime (normal or ferroresonant) ;

• the subharmonic regime ;

• the quasi-periodic regime ;

• the chaotic regime.

Signals are classified in the steady state, i.e. after the transient has ended. Strictly speaking, ferroresonance is only used for phenomena that are maintained in the steady state.

Nevertheless,...