Abnormal Voltage Conditions in Three- Phase Systems Produced by Single-Phase Switching

Clarke, Edith; Peterson, H. A.; Light, P. A.

doi:10.1109/t-aiee.1941.5058342

Cited by 21 publications

(1 citation statement)

References 6 publications

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“…The ferroresonance phenomenon appears after some type of disturbance or switching operation that provokes the power transformer of the installation to be fed on one or two phases (e.g. unipolar switchings, protection systems based on fuses, broken phase conductor,…) [13,[31][32][33][34][35][36][37][38] If the primary winding of the power transformer is ungrounded, the ferroresonant circuit is created through the phase-to ground capacitance On the contrary, if the primary winding of the transformer is grounded, the ferroresonant circuit is created through the phase-to-phase capacitances ( Figure 6). If capacitances and primary windings have both the same ground connection (both ungrounded or both ground connected) the ferroresonant circuit does not appear.…”

Section: Power Transformer Supplied Accidentally On One or Two Phasesmentioning

confidence: 99%

Ferroresonant Configurations in Power Systems

Valverde¹,

Buigues²,

Mazón³

et al. 2012

REPQJ

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Over the last decades, power disturbances have become an important factor on the increase throughout electrical networks, which can exert an important influence over power quality ratios. Amongst them, it is worth mentioning ferroresonance, which is a special case of resonance involving non-linear inductances that mainly affects the functionality of transformers. Its effects are characterized by high sustained overvoltages and overcurrents with maintained levels of current and voltage waveform distortion, producing extremely dangerous consequences. The first step against ferroresonance is always to prevent it from appearing, so it is important to identify those electrical configurations prone to the appearance of the phenomenon. Therefore, this paper analyzes different ferroresonant configurations that may take place in power systems, highlighting some of the most relevant aspects of each configuration.

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