Impedance-frequency characteristic curve of 10kV bus
Due to the 34th resonance at the 35kV bus at the distance of 26.3km from the main transformer, the 34th harmonic current and voltage amplification phenomenon in the 10kV bus and...
Study on ferromagnetic resonance characteristics and suppression
Abstract: Ferromagnetic resonance often occurs in distribution networks with ungrounded neutral points due to transient impacts. Under different parameter combinations, fundamental resonance, frequency
A Tutorial on Ferroresonance
The peak ferroresonant voltage can be much larger than the system voltage causing both voltage and thermal stress issues. Sustained operation of surge protection (arresters) can lead to failure.
Ferroresonance in electricity networks
Ferroresonance, or nonlinear resonance, is a rare type of resonance in electric circuits which occurs when a circuit containing a nonlinear inductance is fed from a source that has series capacitance,
Ferroresonance in Distribution Systems – State of the Art – Power
Recently, there are increasing interest in studying the ferroresonance phenomenon, due to the various problems it causes to power quality and the destruction of network parts, insulators
Case study: Failure of a transformer & switchgear buses due to a
We describe the power system and associated protection, the failure mechanism, the ferroresonance phenomenon, corrective actions, and lessons learned. Contents: 1. Description of the
Research on the mechanism and restraining measures of
The results show that when eliminating the single-phase ground fault, it is easy to cause the frequency division resonance of the system, and the use of these two measures can effectively
The voltage of the 10kV bus fluctuates between high and low, and the
A strange phenomenon occurred in a 35kV substation for several consecutive days: the 10kV bus voltage fluctuated irregularly between 6.5kV and 11.3kV, causing the reactive power
Examples of Ferroresonance in a High Voltage Power System
The phenomenon of ferroresonance is of particular concern during capacitor voltage transformer (CVT) or coupling capacitor voltage transformer (CCVT) transients, and can cause noticeable deviation of
Ferroresonant phenomena on 6
Ferroresonance phenomena in distributing networks with an insulated neutral caused by electromagnetic measuring voltage transformers and connecting cables are studied.
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