Ferroresonance: An Insight Into the Phenomenon

doi:10.21090/ijaerd.13660

Cited by 1 publication

(1 citation statement)

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“…-detection of the ferroresonance based on the chaos theory and then analysis of nonlinear dynamic system behavior with the use of bifurcation diagrams, Poincaré maps, or phase planes -this approach allows one to identify the ferroresonance stability area with respect to dynamics variation of the system parameters and its initial conditions [19], -modeling of ferroresonant systems focusing on nonlinear inductive components -this involves modeling of magnetic cores of power transformers and reactors, including hysteresis effects [20], -investigations on ferroresonance occurrence in power grids [21]: a) experimental research on scaled down physical models of the system and components, b) research on ferroresonant waveforms obtained from full scale measurements in power grids, -investigation on system configurations that should be used to avoid ferroresonance occurrence as well as development of new mitigation methods on ferroresonance effects [22], -signal processing methods for analyzing ferroresonance voltage or current waveforms [23][24][25]: a) Short Time Fourier Transform (STFT), b) wavelet transform, -parametric and statistical analyses of ferroresonance parameters jointly with the analysis of investigated system parameters [23].…”

Section: Ferroresonance In Power Gridsmentioning

confidence: 99%

Archives of Electrical Engineering

Polewaczyk¹,

Robak²,

Szewczyk³

2019

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This paper presents a study on ferroresonance occurring in a high voltage 400 kV transmission grid due to energization of power transformer under no-load conditions. The system scenarios analyzed in the present paper are considered as critical for development and modernization plans as currently announced by the national grid operator in Poland. The PSCAD simulation model was developed and applied for several study cases of a system with double-circuit arrangement of a transmission line. It is shown that the ferroresonant oscillations can be initiated by two-phase switching operation of a line circuit breaker. The impact of the double-circuit length on the ferroresonance mode and severity is demonstrated with the use of the Poincaré map analysis and Short Time Fourier Transform. It is demonstrated that the length of the transmission line that is mutually coupled in the double-circuit arrangement has a significant impact on the ferroresonance occurrence and on its mode. As the ferroresonance can pose severe threat to the power system components due to the severe overvoltage and overcurrent oscillations, the analysis presented in this paper demonstrates the necessity of the ferroresonance analyses for any re-designed transmission system.

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